Addison Geothermal 3Ton Water Source Heat Pump Vertical We Make Complete Energy Saving Air Duct Systems Precut Start Price USD 3,164.00 Current Price USD 3,164.00 Time Left - Bid Count 0 Buy It Now Price - Reserve Price - Start Time Thursday, July 17, 2008 End Time Sunday, July 27, 2008 Location York, Pennsylvania See more about 'Addison Geothermal 3Ton Water Source Heat Pump Vertical' Description descoenergy store Geothermal Heat Pumps Addison - A Trusted Known Name in the Geothermal Industry for 57 Years DESCO - A Trusted Name Known in HVAC Wholesale Distribution for over 35 Years A Winning Combination This ad is for the following Product(s): Addison 3 Ton Geothermal Vertical Heat Pump System Addison Vertical Geothermal a/k/a Water Source Water Ground Source 3 Ton Heat Hump VGY036C61A for Ground Loop Applications - As geothermal heat pumps are built to order, delivery is 6 to 8 weeks after purchase. Please see options below.  Not the right size? Check our other ads   VGY – Ground Water Application Btuh Btuh Cooling EER Heating COP 37,700 18.6 32,500 4.1   VGY – Ground Loop Application Btuh Btuh Cooling EER Heating COP 35,800 14.9 24,100 3.5   Model  Nominal Cooling Capacity Ground Loop BTUH @ 80.6/66.2°F ENT Air, 77°F ENT LIQ./EER Nominal Heating Capacity Ground LoopBTUH @ 68/59°F ENT AIR, 32°F ENT LIQ. /COP Nominal Cooling Capacity Ground Water BTUH @ 80.6/66.2°F ENT Air, 59°F ENT LIQ.  Nominal Heating Capacity Ground Water  BTUH @ 68/59°F ENT AIR, 50°F ENT LIQ. Voltage/ Maximum Overcurrent Device (amps)  DimensionsW x D x H  VGY036C61A  35,800/14.9 EER 24,100/3.5 COP 37,700/ 18.6 EER  32,500/ 4.1 COP  208/240 30 AMPS  26 x 21-1/2 x 43-1/8  The VGY models are rated for Ground Loop heat exchanger application with entering fluid temperature between 30°F and 100°F in accordance with ARI Standard ISO 13256-1. Each unit is a complete package containing compressor, reversing valve (heat pump models only), metering device and water to refrigerant heat exchanger. Safety controls include overload protection for motors, high and low refrigerant pressure switches and a lockout control circuit. The vertical configuration of these ducted units makes concealed, equipment closet or “over the water heater” applications simple to install. Constructed of hot dipped galvanized G90 steel that is chemically treated with zinc phosphate, coated with 0.2 to 0.3 MIL polyurethane primer then finished with .07 to .08 MIL polyester top coat, these attractive units are suitable for a variety of applications. Price - $3,164* Due to the options specified all geothermal units are built to order according to specific application and the large amount of options available. Delivery is 6 to 8 weeks from time of purchase. This geothermal system comes with a 1 year all parts on the unit plus 5 years on the Compressor and factory warranty supported by DESCO Energy direct to you! To receive the warranty and technical support we do have warranty requirements. There are two important warranty requirements: 1. You are required to use our online sizing form to determine you are purchasing the right size furnace.  2. After the installation is complete a certified technician that is licensed must do the final start up and check out  and complete and return the warranty validation form. For more information on warranties and requirements please click on the links below in this ad. (Please note we do not require a licensed contractor to complete the installation. For more information please click on the link below in this ad on How to Locate an Installer. ) Due to our direct relationship with Goodman we offer you factory warranty and support direct. To go to the online sizing form, Click Here Need a shipping quote??   Please Enter Your Destination Information:     Zip Code Country   Destination  U.S.Canada      Options Included  Isofroth polyurethane foam encapsulation on cupronickel coaxial coilCabinet: Left hand return. Right hand return. Sound reduction package of high density closed cell insulation and compressor sound absorbing jacket. Options Available but NOT Included Coil Coatings:c Thermoguard® on tube & fin DX coil.c Baked phenolic on tube & fin DX coil. 2” filter rack with hinged access door.Refrigerant Circuit Components & Controls: Hot Gas Reheat (Consult DESCO Energy for application information). Hot Gas by-pass (Available on units 3 ton and larger. Factory installed waterside economizer coil with 3 way motorized valve.Electrical Options: Electromechanical controls. Provides basic unit control for the fan, reversing valve and compressorwithout the use of printed circuit boards. Includes lockout safety relay. Component Safety Group. On a call for cooling the evaporator blower motor starts. After 3 second delay, the compressor starts. Includes 5 minute anti-shortcycle time delay (delay begins upon opening of control circuit and for field testing, the 5 minute cycle can be shortened to 5 seconds). Compressor operation is locked out upon opening of high pressure cutout, low pressure cutout (low pressure cutout is bypassed for 90 seconds at start-up to avoid nuisance trips) or optional condensate overflow safety switch. Reset remotely at thermostat or by removing and reapplying power to unit. Switched 24 vac output for remote fault indication (field accessory). Condensate Over Flow Safety Switch. Energy Management Relay. A device to allow unit control by an external source. Phase/Voltage Monitor (3 phase only). Water regulating valve.  More Accessories Available but Not Included Room Thermostats. Electromechanical, electronic and programmable electronic thermostats may befurnished. Wall mounted room thermostats are available with or without system switch functions. Locking covers for thermostats are offered.  Status Panel. Panel for remote mounting with annunciation lights (Fan, Cool 1, Cool 2, Lockout,Clogged Filters, Spare) to indicate unit-operating conditions. For use with standard electromechanicalthermostat only. Firestat. When the return air temperature reaches 135°F, the Firestat turns the unit off. The device is fieldinstalled in the return air duct and is manually re-set. Filters.1 Inch extended surface pleated filters (30% efficient).1 Inch frame with replaceable filter media. Electric Heaters.Field installed over the blower electric heaters (see heater specifications). External Pump Assembly Warranty Specifications   Please note that for any and all warranty and technical support is provided direct by DESCO Energy. To be eligible for warranty and technical support there are 2 requirements. The first requirement is sizing of your system by our online sizing form. To go to the online sizing form CLICK HERE. The second requirement is for the final hook up of refrigerant lines and wiring as well as check out of the system must be performed by a licensed professional installer. We provide a Warranty Validation Form that must be completed by your licensed professional installer and returned to us within 60 days of purchase of system. Failure to return this form to us within that time frame will result in voiding any warranty parts and technical support. An extension of the time frame of 60 days must be made in writing to us but it can be no longer than 100 days from date of purchase. Remember no HVAC manufacturer provides warranty or technical support direct to the homeowner and it is the total responsibility of the seller to provide warranty and technical support to you. That is why it is most important to purchase your HVAC system from a supplier that is a real brick and mortar operation with over 35 years in business and is listed and has a direct affiliation with the manufacturer. Also to know if the system you are purchasing is the correct size please go to our online sizing form Click Here  If you are simply replacing an existing system or if you are adding a geothermal system to a new house or existing house don't guess and don't take a contractors advice. We provide accurate guaranteed sizing and we're the only online source providing this service at no charge. Plus it's guaranteed. We size thousands of systems annually and we can't afford to be wrong or to make the mistake of under or oversizing your system which is the main cause of premature equipment failures, poor comfort and wasted energy. DESCO Energy sizes more systems in one week than the majority of HVAC contractors may do in their entire careers using the latest Manual J system and a very sophisticated computer software designed for your specific house in your area of the country. Any homeowner who attempts to do their own complete geothermal installation is not properly skilled nor do they have the proper test equipment and tools to do a complete installation. Most homeowners can do up to 50% of a geothermal installation and the remaining labor, parts and check out must be performed by a licensed installer. For more information on how to locate a qualified installer please check our website descoenergy.com or contact us toll free 877-265-9764 8-5 Eastern time. For further questions call us toll free 877-265-9764 8-5 Eastern time or email info@desconenergy.com The system listed has a full manufacturers factory warranty. DESCO Energy is a complete Authorized Fedders and Addison Distributor. DESCO Energy guidelines and requirements must be met to obtain warranty coverage. The limited warranty on the product listed in this ad is: One Year on all parts 5 Year Compressor - Condenser - Evaporator - Reversing Valve and Expansion Valve  Limited Warranty For complete warranty policies and procedures etc. Click Here   Installation of a geothermal heat pump is generally not a project to be tackled by a typical homeowner do it yourselfer. Why? A geothermal system requires the installation of loops. This requires a well digger as most loops are vertical with 200 foot loops per ton. Loop depth is determined by the thermal transmissivity of the soil where you live. In other words depending on how well the soil absorbs and rejects heat determines how much length is required for each loop. The type of tubing required requires certification to bond the tubing from the loops together in a manifold. In the vast majority of applications you will need a well driller and an installer certified in bonding the loop tubing. Often we are asked questions such as what size hole do I need? How many holes are required and how deep do they have to be? What if I want to install horizontal loops, how long do they have to be? How many do I need? What size tubing do I need? These are all questions that can only be answered by a geothermal specialist or well drillers in your specific area. The answers to these questions vary throughout each area of the United States. And they are not questions to which we are able to provide answers. There are some answers we can provide. Can a geothermal system be installed by a homeowner do it yourselfer? Not to contradict what was said earlier, yes a geothermal system can be installed by a creative above average do it yourselfer in unique situations. But remember absolutely no system can be installed whether it is geothermal, standard heat pump etc. without the final assistance of a professional experienced licensed installer. That being understood also realize we will not provide any warranty or technical support for any product unless the system has been sized by DESCO Energy and the final start up and check out is completed via our warranty validation form by a licensed professional technician of your choice. For online sizing of your system requirements, Click Here. Here is how a geothermal system could be mostly installed by an exceptional do it yourselfer. Today most geothermal contractors use loops to install a geothermal system. But there is a more efficient system long forgotten or ignored by contractors. The traditional pump and dump geothermal heat pump system is still the most efficient method of using a geothermal heat pump. A pump and dump system utilizes two wells. A supply well and a discharge or dump well. By using well water directly through the heat pump you gain a large advantage in most areas of the country because the water temperature is more consistent and is generally at 50 to 55 degrees. Now if you are fortunate enough to live in an area such as the Easter Shore area in Maryland, Delaware or Virginia you are in a great place to do your own installation by digging your own well. In this particular area you are in a sandy soil where the water level is 6 to 30 feet below grade. A shallow well could be drilled to supply the water for the heat pump. The discharge well in this application would have to be more than one well to dissipate the water more evenly without causing breeching of the discharge well. In other words several wells taking about 2.5 gpm each so as not to have water trying to come to the top of the well. Running a shallow well pump with schedule 40 pvc and interconnecting the tubing from the supply well to the discharge wells and you have your external geothermal system. Note that on the supply well you will need a screen to prevent sand from entering the well system.  This screening is manufactured by a specialty well source supplier. So how do I dig the wells? This is where we talk about the above average do it yourselfer. This is not something within the skill range of the average do it yourselfer. Using a water well drill auger connected to a gas powered post hole digger and you can easily dig a 20 or 30 foot well in sandy soil. There are also portable hydro drill rigs that allow a homeowner to do their own well digging in other soils throughout the country and they cost anywhere from $2,200 to $3,500. With the average cost of drilling a thermal hole at $2,000 each and the average cost of a well drillers price tag at $6k to $9k portable hydro drill rigs could make a worthwhile investment. On the eastern shore where the soil is sandy a simple post hole digger with a well auger will work. Well drillers rigs are big and bulky and weigh 30 to 70 tons. This limits their accessibility to many applications especially in developments that are already tight for space. It is the cost of the well drilling that makes geothermal systems so expensive. Another reason pump and dump systems are not used like they once used to be is the varying water tables. Loop systems are not dependant on water tables and are a safer installation. For this reason we are pointing out the ability to utilize shallow wells in areas where the water tables are more constant and not too deep which provide an excellent opportunity to install a shallow well geothermal pump and dump system. We are working diligently to provide a cost effective method of installing geothermal systems. It is important to reduce the cost of the installation of a geothermal heat pump so there is better payback. For example an air to air heat pump in the Northeast can cost anywhere from $200 to $500 a month to operate in the winter. A natural gas furnace or boiler will cost the same or more. A geothermal heat pump will cost $80 to $200 a month to operate. Many electric utilities are now raising electric rates 40 to 75% as a result of increases in fossil fuel costs. Coal, oil and natural gas prices are rising at incredible rates. The vast majority of electric is produced from these fossil fuels. Some homeowners took a short sighted view of the recent natural gas price hikes and decided to switch from natural gas to heat pumps in the north in recent months only to now be faced with skyrocketing electric price hikes. Any price hikes in energy permeate to all other energy costs in time. If any energy source remains low for any period of time there will be a mass change to that energy source again creating more demand than there is supply and the final result is again skyrocketing increases. For example if electric rates in one area remain low for an extended period of time many homeowners and businesses will switch to heat pumps and electric heating. As demand grows the electric utility is forced to build more power plants resulting in higher electric costs. Energy costs are increasing so much they are becoming equal to a homeowner's mortgage payments. Property taxes are also increasing at phenomenal rates. We seem to be voiceless at curtailing any of these cost increases so the most effective method is to decrease energy consumption. A geothermal heat pump is the most cost effective and efficient form of heating and cooling. But a contractor installed geothermal heat pump costs on average $5,000 to $7,000 a ton. So a three ton geothermal heat pump can cost $15k to $21 installed. If you can take out and reduce the cost of the wells required, you will then have a viable energy efficient heating and cooling system. A 3 ton geothermal heat pump using a so called do it yourself well dug system could be installed for $7,000 to $12,000 complete. But this is not a project for the typical do it yourselfer and it will still require the expertise of an experienced professional installer to assist with the design and final hook up and start up of the system. How can this be accomplished? First determine the water level where you live and what flows you can reasonably expect at the depth required. For example on the three ton system you will need 10 gpm of water flow. Let's say you're lucky and already have a well on your property that either has excess capacity equal to 10 gpm or the well is o longer in use and has at least 10 gpm capacity. You must also determine if the flow is consistent and is not subject to change as what could occur in a normal drought. In other words has the water table at the present depth been able to produce the required flow for the past 10 years. If you already have a well with this capacity you're half way home on the well side. If not then it would be best to talk to local well drillers and determine what depth is typically required in your area to achieve the flow you'll need. Note that if you live in a shallow water area where water levels are sufficient at shallow depths of 6 to 30 feet, you will rarely if ever find a well driller that is interested or who will propose digging a shallow well for your needs. Why? Well drillers are a conservative group as a whole and are accustomed to digging deep wells where water is potable. Water at shallow depths is not potable and therefore not in the mind spectrum of the typical well driller. You're interest is only in water flow on a consistent basis, not about the potability of the water. You then have a choice in areas where permits are not required to dig wells. You can then decide to dig your own well using a portable rig or contract with a well driller. If you can devise your own well drilling rig or purchase a hydro well drilling rig then it will be possible to install a cost effective geothermal heat pump. The dump well requires more careful consideration. Typically you may think that a dump well will simply take the amount of water you discharge in to it. But this is usually not the case. It may be necessary to dig several discharge wells due to the well possibly breeching. Breeching is when the discharge water comes back up the well shaft and saturating the soil. Not a good thing. We recommend keeping the discharge well at no more than 3 gpm. The discharge well should be 50 feet from the supply well. If you live in a heavy rocky area, don't attempt any of the methods above. By reducing the cost of the well drilling you could make a geothermal installation more cost effective. Where there are laws governing well drilling or not you should discharge the water back to the same source from which it was removed. For example taking water from a large pond should also be discharged back to that pond or stream of water. Water for example should not be taken from a well and then discharged to another area such as a pond or vice versa. There are other alternatives installations using horizontal loops. Some homeowners have rented backhoes or employed backhoe operators to install horizontal loops. They have used pvc tubing and using 200 foot runs per ton of capacity and installed horizontal loops below the frost levels. This isn't necessarily a procedure we recommend but it has been done. The recommended procedure is to use the correct plastic tubing recommended for geothermal installations which requires a fusion toll and a licensed experienced installer. We had a homeowner several years ago who built his own geothermal system and installed the refrigeration copper tubing directly into the earth. The homeowner again was not typical in that he was a former engineer. But the application was successful and we salute that type of ingenuity and the ability to think outside the box.  If your goal is to seriously reduce your energy consumption there are other alternatives to geothermal which are more cost effective and possibly better suited to a homeowner application such as corn burning boilers or even dual fuel systems.  The Addison geothermal heat pumps have several options available. For a geothermal application a foamed cupper nickel heat exchanger needs to be used. as well as the optional control package also needs to be included.     We offer the complete line of Fedders products including Trion - Herrmidifier - Addison Geothermal - Eubank - Look for our new ads coming daily for all these great products. Please check our store listings for a complete list of all the products and manufacturers we stock and distribute including Goodman, Tappan, Trinity and Zurn. Always growing to offer you more variety and the broadest selection of HVAC products on the internet and the only source that is Factory Authorized!! Click Here > Size My System Welcome to DESCO Energy     Click on the Size My System logo above.   Have your system sized accurately.  Oversizing of equipment - The biggest mistake made by contractors and homeowners - Oversizing - Results in over 95% of warranty claims - poor comfort - wasted energy - premature system failures - and higher costs for larger sized equipment. Click on the Size My System logo above to go to our online sizing form - Guaranteed Accurate Manual J Sizing of your system and it's FREE!! We are conveniently located in the Northeast 26 North State Street  York, Pa. 17403 Only minutes or hours from every major northeast city - Washington, D.C. 1.5 hours Baltimore 45 minutes - Philadelphia 90 minutes - New York City 2.5 hours Pittsburg 3 hours - Harrisburg and Lancaster 30 minutes Contact Us - info@descoenergy.com Toll Free 877-265-9764 or 717-846-3384   Did you know DESCO Energy also provides a complete energy efficient precut duct system for all forced air applications? See information below and our other ads in our stores section here on eBay.       Standard FeaturesHeavy Duty Cabinet. All models are constructed of galvanized steel. Bases are minimum 18 gauge, corner posts access panels, and top pans are minimum 20 gauge. The interior sides and top of the unit are thermally insulated with ½ inch thick fiberglass. Insulation surface exposed to the air stream is finished with acrylic coating that is resistant to air erosion and microbial growth. The design of the cabinet allows access to the electrical panel without impairing unit operation. Compressor. All compressors are designed for heatpump duty and have been selected for their reliability and state of the art technology. Compressor mounting is designed to reduce vibration transmission to the unit structure and minimize piping stress. Compressor motors are equipped with internal overheat - overload protection or an external overload in the compressor terminal box depending on the model. Refrigeration Circuit. All units contain a sealed refrigerant circuit including a hermetic compressor, finned tube air-to-refrigerant heat exchanger, coaxial water to refrigerant heat exchanger, refrigerant reversing valve and service ports, metering device:VGY — thermostatic expansion valveRefrigerant reversing valves are pilot operated sliding piston type with replaceable encapsulated magnetic coil energized only during the cooling cycle.Indoor Air Coil. The indoor air coil is constructed of enhanced aluminum fins formed on multiple rows of seamless rifled copper tubing arranged in a staggered tube configuration. The tubes are mechanically expanded, firmly bonding the tube to the collar of each fin.Coaxial Water Coil. The coaxial counterflow water coil:VGY — an enhanced surface inner copper tube with outer steel tube shell (tube-in-tube). The inner tube serves as the water circuit and the annular space with fluting is the refrigerant circuit.Piping. Supply and return water and condensate drain connections are brass female pipe thread fittings mounted flush to the cabinet exterior.Blower and Motor. A forward-curved, statically and dynamically balanced DWDI centrifugal blower is used for the circulating air. Blower wheels are fabricated of galvanized or galvalume steel. Blower housings are fabricated of galvanized steel. The housing and wheel are designed for quiet low velocity operation The fan housing is removable from the unit without disconnecting the supplyair ductwork for servicing of the fan motor. The fan motors are multiple speed PSC type, permanently lubricated and have thermal overload protection.Addison Smart Switch Microprocessor Control. The controller incorporates features which improve the operation and safety of Addison heat pumps. These features include:1. Compressor short cycle protection2. Brownout protection with time delays for the fan and compressor to prevent damage due to low voltage conditions3. Over voltage protection.4. Condensate overflow protection5. Refrigerant high / low pressure protection6. Random compressor start delay to prevent high building electrical demands when multiple units are simultaneously switched on during power-up, return from under/over voltage, return from load shed, etc.7. LED’s to indicate operational status and fault indication8. Controlled delay of the reversing valve to reduce annoying “swish” noise9. High speed test jumper (TP) used to reduce compressor short cycle and reversing valve delay times to speed system check out and repair.10. Load shed control input for energy management systems11. Remote shutdown control input for remote shutdown of unit.*12. Unoccupied control input for night setback control13. Inputs for both standard (W1) and night setback (W2) thermostats.14. Fault output for remote fault indication.15. Operation of the fan during most faults and load shed to increase comfort.16. Tenant override input to manually switch from unoccupied mode (U) to occupied mode (O).17. Control board inputs U, L, E, Y1, W1, G, W2, and O have been designed to operate by connecting to the unit’s 24vac (R) terminal.*The remote shutdown input (E) should not be the sole means of ensuring equipment status when used as a part of a life-safety control system as the unit fan may operate during some fault conditions.Sloped Stainless Steel Condensate Drain Pan. The condensate drain pan is sloped to comply with ASHRAE Standard 62-1089R and fabricated from stainless steel. The bottom is then insulated with 1" fiberglass insulation. The drain pan is furnished with single or dual MPT drain fittings positioned at the exterior of the cabinet.Filters. All models are shipped with 1 inch thick disposable glass fiber media filter mounted in the factory installed 1 inch return air duct collar on the return air opening.   For complete manufacturer's specifications Click Here     For any and all questions Contact Us - info@descoenergy.com Toll Free 877-265-9764 or 717-846-3384   DESCO Energy is an Authorized Fedders Distributor  No need to worry about warranty protection We are the Factory Source for technical support - equipment - parts - service support and warranties  Need a shipping quote?? Call us Toll Free 877-265-974 or email info@descoenergy.com DESCO Energy is a full line HVAC contractor and homeowner distributor serving the Mid-Atlantic region and nationally through the internet. Please note that due to the increased demand for geothermal heat pumps geothermal products are built to order and delivery is 6 to 8 weeks after purchase.  Shipping The system listed is 300 lbs.  All equipment is shipped terminal delivery freight collect via ABF at a substantial discount unless otherwise specified. Need a freight quote? Please see the Shipping Calculator at the beginning of this ad.   Do It Yourself HVAC Getting Started On the road to installing an energy efficient maximum comfort HVAC system the first step is to determine what type of system works best for you. The choices are many and can be confusing. Heat Pump, Gas or Oil Furnace with or without air conditioning, Electric Heat, Geothermal Heat Pump, Dual Fuel System, Radiant Floor Heat. Forced air or convection or radiant? What fuel is the most cost effective? What kind of life expectancy should I expect? The answer to these questions depend primarily on where you're located and what your specific costs of energy are for your particular region. One size doesn't fit all and energy costs vary throughout every region. The first part of this process should be to determine what your real energy costs are.. When determining real costs add the taxes and other charges because they are part of the real equation for comparisons. Certain utility companies offer tremendous incentives to use a specific type of energy. For example in certain areas the utility company may provide a discount if you have an all electric home. Those discounts can be 50% or more over what a regular customer receives. In addition certain utilities offer rebates for installing higher efficiency equipment. Check with all your local utilities to understand what discounts and rebate programs might be available. Also determine the length of the program. For example a utility that offers a substantial discount for only six months and then increases the rate might not be such a great deal. A number of all electric homes were built n the 70's and 80's because the electric utilities were offering great incentive programs at the time. But when those discount programs expired the homeowner was left with a utility cost that was so expensive they couldn't afford the monthly costs. Worse was the fact they couldn't get proper market value if they attempted to sell the house. Be careful of all these programs and realize the real cost effects of the energy when the program ends. When it does, are you going to be faced with those ultra high utility bills? In some cases there are ways to plan around those potential problems by selecting a dual fuel system when that choice is available. Many people today believe the cost of natural gas is higher than any other fuel available because of all the price increases from 2004. Recent utility trends have been to lower the cost of natural gas. In most regions of the country natural gas is still the best value of all fuels available. When it comes to natural gas, electric, oil and propane the prices of each utility continue to increase rapidly. Like a horse race to see who can achieve the highest costs the prices rise faster monthly. We're made more aware of this effect every time we stop at a gas station to refill our cars. Every week the prices change and mostly upward.  As a basic rule of thumb the cost for heating and air conditioning is the biggest household budget item. Determine what your costs are for your specific area so that you can make a more intelligent decision in selecting the most efficient system for you. Regardless of the type of present system you may have, don't automatically assume this is the best replacement. A developer may have selected the type of system you presently have due to special offers from the utility years ago or initial cost factors. Utility costs were different years ago and so were the types and efficiencies of systems. Also improvements to the house such as more energy efficient windows, additional insulation and weatherization all play an important role in the size system required today. Initially a house may have required a 3 ton system but later was made more energy efficient and today may only require a 2-1/2 ton system. Now is the perfect time to explore all your options. Also remember dinosaur attitudes and memories never seem to fade in the HVAC industry. For example we continue to hear customers negative apprehension about heat pumps or electronic control systems for furnaces that are left over from 25 to 35 years ago.  These products and their associated problems have been resolved many years ago but the apprehension  and reputation undeservedly continues today as though it was just last year. There are however certain basics you can use. Natural gas is still the best buy and prices are actually beginning to decrease in certain areas of the country. Propane gas is generally the most expensive form of heating. And oil and electric are generally somewhere in between. The best system for comfort is In Floor Radiant Heat. The most efficient form of heating is a dual fuel system combining the efficiency of a heat pump and natural gas or oil furnace. The least expensive operating system is a geothermal heat pump but initial equipment costs and installation make this system ineffective for return on investment. To read more about these and other types of systems go to our Ebay education center where we provide greater detail about them. You can find those links at the beginning of this ad. Review all your options and possibilities before making a final decision. If you need further assistance don't hesitate to call our technical representatives to assist you Toll Free at 877-265-9764 or email: info@descoenergy.com     Sizing Once you've determined the type of system and fuel you'll be using the next item is the size or capacity, efficiency and features. To determine the correct size system you'll need to look at many factors such as the type, size and construction and direction of walls, windows, roof and location and direction. All these factors and more determine what size system you need to install. First we need to deprogram all the misleading information you've been told about sizing an HVAC system correctly. Please note there are only two methods of correctly sizing an HVAC system. The right way using Manual J as a basis and the wrong way. Most likely the method you have learned one of the following wrong ways; The contractor told me this was the right size. I had several estimates and all the contractors told me this size. I used one of those charts that show you how many square feet per ton. My neighbor's house is this size and that's the size system they have. And on and on... Too many HVAC contractors are notorious for using rules of thumb for too many applications. Why? It's quicker and easier to use a Rule of Thumb. The problem with these sizing methods is they cause you to purchase a system that will more often be too large. So what's wrong with a larger system? After all it's a common American belief when a little is good then more is even better, right? Of all the wrong decisions that can be made about an HVAC system selecting an oversized system is the worst. Bigger is not always better! Here's Why? First and most importantly the larger system will fail prematurely and the comfort level will be less than desirable. If it's an air conditioning system the cooling won't run long enough to properly dehumidify the air. The comfort result is a house that's cold but clammy.  The hidden result is a compressor that short cycles. The compressor fails long before it normally would have if the system was sized correctly. Note that short operating cycles destroy HVAC equipment and decrease comfort. Why install a larger system that costs more initially when a smaller system will give you the effective results you need? Contractors do this because it's safe. Homeowners are usually unaware of the problem because the destruction goes on unnoticed to the untrained eyes and ears. Homeowners and contractors in our field are installing a system that won't provide sufficient heat or cooling. However this problem rarely ever happens. A furnace that is oversized produces short cycles of hot blasts of air instead of warm air. Again short cycles will destroy any HVAC equipment prematurely. A normal operating cycle will last anywhere from 12 to 15 minutes or more. Shorter operating cycles prohibit the unit from obtaining normal operating temperatures and result in the system never obtaining operating efficiency. Much the same as your automobile that is only operated for short periods of time, the engine never gets warm enough to operate at the maximum efficiency levels and the net result is higher gasoline usage and short life cycle. Remember that a heating system has to obtain very high temperatures in the heat exchanger as a result of the burning gas. During this process there is a tremendous strain the heat exchanger as the system expands due to the increasing temperatures and stress on the motors due to starting torques required. Constant starting torques on the motors and continual expansion and contraction of the materials result in a premature failure. These are hidden effects that you don't see or notice until the repair bill comes or the furnace fails completely beyond reasonable repair. What you will notice is the discomfort associated with oversized equipment. Instead of a more balanced temperature the result is hot blasts of air and wider temperature fluctuations resulting in larger temperature swings. Many homeowners assume this is simply normal and become accustomed to this type of operation. Oversizing of equipment is such a chronic problem that it has become epidemic. In fact the problem has become so severe the US Department of Energy has published many articles and warnings about the problem to you the consumer. Oversizing of equipment is the single biggest problem of premature equipment failures in the HVAC industry. Why does this problem proliferate in the HVAC industry? An HVAC contractor and a homeowner's worst fear in selecting an HVAC system is that it won't heat or cool sufficiently. Having no experience or confidence in our industry's accepted design and engineering standards such as Manual J,  results in a guess. To be safe the guess will always be on the extremely large system. The end result is a system that is not only uncomfortable, but also an Energy Hog!  There is remedy to this problem. At DESCO we're putting an end to the epidemic oversizing of HVAC systems for you to help you avoid premature equipment failure, increase comfort levels and increase energy savings and less initial cost as well. DESCO will at no charge size your HVAC system accurately with guaranteed sizing results. Simply Click Here to go to our online sizing form. Fill out the requested information and then push the submit button. You will the receive an email indicating the information was received and the results are ready for you. Our technical staff will review those results with you to be certain all information is correct. Most importantly there is no charge for this service. You can then be assured you know the correct size heating and cooling system for your house based not on guess but real engineering standards. Our HVAC computer sizing is Manual J as the basis. Manual J is the form and method recognized as the correct engineering method to determine correct sizing of any residential structure. In addition to this software we have added other limits and calculations in addition to the Manual J program. These additions limitations for ventilation for extremely efficient tight construction such as ICF. Are we accurate? In one month each technical associate in our company will size more systems than the average contractor will size in his entire career. Our software system is one of two that has been accepted and recognized by most governing agencies in our industry including the US Dept. Of Energy. After 34 years and with the volume of equipment we sell we can't afford to be wrong. Our sizing takes into consideration all effects of your house including geographic location, your climate data for your specific region, the construction of your house and the insulating efficiencies of all walls and windows. We can also tell you the effect of adding more insulation or increasing the efficiency of the windows and the effect this will have on the size of the HVAC system. We realize we provide redundant information on the importance of correct sizing intentionally to stress to you the importance of this issue. For new construction we strongly recommend in addition sending us the plans for the house either via a sketch that is faxed to 717-846-3880 or emailed to info@descoenergy.com. You can also mail a copy to us direct at Technical Sales Dept.  DESCO, 26 N. State St., York, Pa. 17403 All drawings should include floor plans, elevation view and direct of either North, South, East or West. Drawings do not have to be to scale. If you wish to do a computer layout there are free downloads of programs on the internet. Attachments should be in standard office format such as pdf. jpeg, gif or wrks. Our virus protection many times will not scan cad drawings effectively. In the event of improper scanning the firewall may delete the attachment or email. We recommend converting all cad formats to standard formats such as dwg or office formats. We provide this sizing service to you at no charge. If you want a room by room printed analysis, we do have a service charge for this. However in the case of in floor radiant heat we will as necessity requires provide a room by room analysis for estimating purposes. We do not provide the individual room results or analysis unless there is a purchase of a system.            After Sizing comes the Duct System   If you're looking to replace or install a forced air system using a blower to circulate the air the most important ingredient is the duct system. We provide a complete detailed download article about duct sizing on our web site. Links to this article and other valuable information are located at our eBay store education section at the beginning of this ad. The most common mistake is the oversight of the importance of the duct system which distributes the air throughout the house. Finding detailed information about proper design and installation of a duct system is difficult.. Without a properly designed duct system you may end up with the worst nightmare you could imagine. A properly designed duct system will provide even comfort and temperature throughout every area of the house. The duct system is a major factor in determining how long the equipment survives. Proper air flow is critical for performance and efficiency. Remember there is no substitute for a properly designed and installed duct system. The blower or fan in an HVAC system is only capable of forcing so much air through a certain size duct. The most common concept and mistake made by many contractors and homeowners is attempting to increase the size of the equipment to compensate for a poorly designed duct system and the associated discomfort it provides. The only remedy for this problem is to correct the design of the duct system. Each system size needs to have a minimum air flow rated in cfm or cubic feet per minute of air. If the main equipment does not have the correct amount of air flow the net result will be discomfort and premature failure of the equipment. In the case of heat pumps where air flow is extremely critical there has to be a minimum air flow of 380 cfm per ton. 400 cfm per ton is the ideal mark. Anything less than this minimum will result in poor performance and compressor failure. Even though the warranties sometimes provide lifetime protection, the warranties are void when the compressor fails as a result of improper air flow. If you receive the compressor at no cost, the cost to replace the compressor isn't cheap. Besides who wants a system where the compressor has to be changed frequently? The two major problems in our industry are oversized equipment and undersized duct systems. This is a perfect recipe for premature failure and inefficiency. To compound problems even further the new variable speed blowers will surge when applied against a duct system that is inadequate. This surging is a result of the sensor on the blower seeking to maintain a constant air flow. An undersized duct system creates too much resistance to the blower. The resultant blower surging will absolutely drive someone crazy. Imagine the blower going from full capacity to minimum continually in a matter of seconds. This condition is easily remedied by having a properly designed duct system.  Pay attention to the duct system. Even if you're replacing an existing system, don't assume the duct system has been designed or installed correctly. At DESCO we will review the duct system to be certain it is sized correctly with enough air outlets and return inlets. If this is a new installation we'll size the duct system for you. If this is a replacement system we will review the duct system as well.  We want to make certain all the systems we sell provide maximum efficient, comfort and longevity. In addition to analyzing your duct system DESCO also provides the best duct materials available. We will precut fiberglass duct board for you to make your HVAC installation the most efficient and quiet possible. Fiberglass duct board is mildew resistant and easily constructed in a matter of seconds. Unlike unforgiving expensive sheet metal with sharp edges that require tin snips to cut and adjust, fiberduct can be cut with a large razor knife. Plus fiberduct Tough Guard is already well insulated and is perfect for attic and crawl space applications. At DESCO we can design and ship a duct system with any equipment order like an erector set ready for your assembly when it arrives. For more information on fiberduct and the benefits check out our accessories ads on eBay. For more information on duct design and a complete download Click Here to go to get a this information and a preview of our new website. For additional questions and information email us at: info@descoenergy.com or phone toll free at 877-265-9764.     Place a Bid!