SEER. EER. BTU. Kw/h. What do they all mean? When choosing a new air conditioner for your home, the facts and figures can be overwhelming. Let’s take a quick look at one of these numbers — the SEER rating — to see what it means and why it matters to your choice of air conditioner. SEER stands for Seasonal Energy Efficiency Ratio. It provides a single number indicating the relative efficiency of the unit. We’ll spare you the math. The SEER rating is the cooling output of an air conditioner divided by the energy input, for a typical season. While the actual efficiency your unit achieves will vary depending on a number of factors unique to your environment, generally the higher the SEER rating, the more efficient the air conditioner is, and the less money you’ll spend on electricity to run it. Where do you find an air conditioner’s SEER rating? The Canadian government requires that central air conditioners be marked with an EnerGuide label that includes the SEER rating indicated on a sliding scale showing how that unit compares to others authorized for sale in Canada. You’ll also find it in the product brochure or in the unit owner’s manual. If you can’t find it, ask your sales representative. The Energy Star® symbol, usually found near the EnerGuide label, indicates that the unit has been certified as meeting the highest standards for energy efficiency. Currently, to qualify for the Energy Star symbol, a central air conditioner must have a SEER rating of at least 14.0 for a single package system, and at least 14.5 for a split system. Oosterveld Heating and Air Conditioning carries a range of central air conditioners, with their Lennox XC21 model boasting a SEER rating of up to 21.0. Of course, there’s much more to choosing the best air conditioner for your home than just grabbing the unit with the highest SEER rating. For expert advice, call our team at Oosterveld at 519-837-2351 or visit their website at www.oosterveldheating.com. Dive into Summer Savings! Receive up to $2,000* with purchase of a new Lennox home comfort system. Offers valid on installations from July 1 to August 23, 2013. Click here for more details.