If your home heating system is more than 15 years old, this fall is a great time to consider upgrading your equipment to more energy efficient models, all the more because of the large number of government, utility and manufacturer incentive programs in effect.
If you do make the decision to replace your home heating system, be sure to insist that the installing contractor "sizes" the system properly. To determine the correct heating or cooling capacity of your system, a contractor should perform a "heat loss and heat gain calculation". This calculation relies on an assessment of the size and age of the home, insulation levels of walls and attic, the type and number of windows, air infiltration, and other factors that influence the rate at which your home loses heat. It also ensures that the duct system, both supply and return, is sufficient to support the equipment chosen, thereby maximizing energy savings.
"Right-sizing" of replacement equipment is one of the most commonly overlooked methods for ensuring that you get the most from your system. Properly size equipment performs more effectively and more efficiently and provides optimal comfort and energy efficiency benefits. If your contractor refuses to do one, talk to someone else.
Over-sizing equipment can result in increased fuel consumption and higher operating costs, potential premature parts failure, higher noise levels, and reduced comfort (hot or cold spots within the home). On the other hand, under sizing can also result in higher operational costs, particularly with today's sophisticated models. The units will be working at full capacity most of the time, which can lead to premature breakdowns and, more generally, reduced comfort levels.
Always get two or three quotes when considering purchasing new HVACR equipment, and make sure the contractor includes the cost of performing a heat loss/heat gain calculation. You can find a qualified contractor by calling HRAI at 1-866-467-HRAI. Click
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