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We recently shared an infographic on How Central Air Conditioners Work that briefly explained the SEER rating. This week, we’ll expand on that explanation and discuss how SEER should factor into your decision when purchasing a new air conditioner and how it affects your overall home comfort.
WHAT IS SEER?
SEER (Seasonal Energy Efficiency Ratio) is a rating calculated by dividing the total cooling energy required in a cooling season by the total electrical energy required to run a central air conditioner system during that season. Essentially, the rating is a ratio of an AC’s cooling capacity to how much power is inputted.
SEER and EFFICIENCY
When discussing SEER and efficiency, you’re looking for a high number. The higher the SEER rating, the more efficient the unit and the lower your monthly energy bills will be. Take a look at your home’s current air conditioner; if it’s over a decade old, you’ll likely find that the unit’s rating is significantly lower than most units available today, especially high-efficiency ones.
Current IESO (Independent Electricity System Operator) incentives are intended to help homeowners update their old, inefficient air conditioners for their newer, higher efficiency counterparts by subsidizing the cost of air conditioners that meet a minimum SEER rating.
WHAT ABOUT EER?
Energy Efficiency Ratio (EER) is similar to SEER, but is missing the seasonal component of its rating. The EER is calculated using a steady temperature instead of the varying temperatures of a complete cooling season. For this reason, the SEER rating is more accurate, as SEER takes into account how different temperatures affect the EER rating. Most often, you’ll see an EER rating for room air conditioners.
When shopping for a new cooling system, make sure to take the SEER rating into account. To determine the best unit for your home and needs, it’s best to speak to a professional air conditioning specialist.
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