Everyone wants to be sure they’re doing the right thing when it comes to being green and that means looking at every aspect of your home, including the HVAC system that you choose. One of the easiest ways to compare the impact your new unit will be making on the environment is to look at the efficiency rating. The best efficiencies for conventional furnaces are at 98% and for air conditioners at 21 SEER (Seasonal Energy Efficiency Ratio). Or if you really want to reduce your impact, consider a Geothermal heating system that has a rating of 34 SEER. Geothermal systems also provide 75 per cent energy savings over conventional HVAC systems. Like the name suggests, the geothermal system uses the earth’s capability to store energy to cool and heat buildings as well as provide hot water. A geothermal system is not only environmentally friendly, it also improves your indoor air quality since no fossil fuels are burned while the geothermal system is working. Remember these are the systems that generate heat by moving it around and not by combustion. It’s necessary to consider the big picture when you’re looking at lessening your carbon footprint by choosing green technology and that means getting all the right information regardless of the type of heating and air conditioning unit you choose. Getting proper HVAC sizing is important and a contractor will supply the correct measurements along with specific data on the quality and effectiveness of the insulation and air leakage around the windows as well as the best system considering the climate you live in. Finally, there are a few things the do-it-yourselfer can do to lessen that carbon footprint. Sealing up the joints in your ductwork is an excellent project that pays off. Paying out that little extra for metallic tape will provide far better savings over conventional duct tape. Oosterveld Heating and Air Conditioning is a family owned and operated business servicing Guelph and the surrounding areas. You can see their fine selection of Lennox equipment at www.oosterveldheating.com or call them at 519-837-2351. Remember the Spring 2012 Customer Promotion can provide you with a rebate of up to $1375 on a qualifying Lennox home comfort system. You can qualify for these savings on installations between March 12th-June 1st, 2012.