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Replacing your old heating and cooling equipment with new, energy-efficient models is a great start. But to make sure that you get the best performance, the new equipment must be properly installed. In fact, improper installation can reduce system efficiency by up to 30 percent—costing you more on your utility bills and possibly shortening the equipment’s life. 


Equipment Sizing


Making sure your equipment is properly sized and installed are also important elements to ensure that your new system performs at optimal efficiency. The Air Conditioning Contractors of America’s (ACCA) quality installation specification, require: Proper Sizing of Equipment Installing the right size equipment for the home is essential to getting the best performance and comfort. Many homeowners believe that bigger is always better when buying new heating and cooling equipment. In reality, a system that’s too large will not keep your home comfortable because of frequent ‘on/off’ cycling. Incorrect sizing can also put stress on system components and shorten the equipment’s life.

Sealing Ducts


To help ensure that your new system delivers the heated or cooled air to all the rooms of your home, contractors using ENERGY STAR Quality Installation guidelines will evaluate your duct system to identify leaks, and then seal them using mastic, metal-backed tape, or an aerosol-based sealant. In some instances, your contractor may advise you that it is necessary to replace or add ducts.

Ensuring Proper Refrigerant Charge

Incorrect refrigerant level can lower efficiency by 5 – 20 percent and can ultimately cause premature component failure, resulting in costly repairs.

Optimizing Air Flow


If air flow in your heating and cooling system is too high or too low, you may experience comfort problems and higher utility bills.





ENERGYSTAR's Guide to Energy-Efficient Heating and Cooling