By FrontDoor.com | Published: 8/05/2010

An HVAC system adds comfort to your home while also being eco-friendly and energy efficient.
Used for a lot more than just heating and cooling, an HVAC system also controls the air quality and energy efficiency of the home. Proper air circulation and precise temperature control give the homeowner more control over their energy bills and increase the livability of the home.
CURRENT TRENDS
Zoned heating: Perfect for two or more story homes, zoned heating saves energy by splitting the heating between lower and upper levels. Similar to non-central heating systems, the zones are controlled by individual thermostats which make heating smaller sections of the home faster and more precise.
Geothermal heat pumps: According to the U.S. Department of Energy, by using the consistent temperature of the earth, geothermal heat pumps can reach fairly high efficiencies (300 percent-600 percent) on the coldest of nights, compared to 175 percent-250 percent for air-source heat pumps on cool days. Through a ground heat exchanger, a geothermal heat pump takes advantage of the even-keel temperatures below ground and are also quieter, last longer, low maintenance and do not rely on the temperature of the outside air to heat and cool the home.
BIGGEST MISTAKE
According to appraisal expert Leslie Sellers, president of the Appraisal Institute, bigger doesn't always mean better. Two variables to consider when looking into an HVAC system are the size of unit -- which drives up cost -- and the standard of energy efficiency.
"If you go with cutting-edge technology, which are the new, efficient machines but also established in the market, you are much better off then going with 'bleeding edge'," says Sellers.
Bleeding edge technology tends to fall into the "most expensive but hasn't stood the test of time" category and could come back to bite you when it's time to sell. The cost of installation and purchase could come out to be much more than what you could gain back in savings over the life of the system.
According to Sellers, it is best to look for tax credits for high efficiency units that you know will aid in energy savings and save you some cash -- both initially and in the long run -- at the same time.
EXPERT TIPS
Slideshow Inspiration: A Look at HVAC >>
Do-It-Yourself Inspiration: Install a Programmable Thermostat >>
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