What do HVAC ratings mean?

August 23, 2018

When you’re searching for a new HVAC system, there are a lot of factors to think about. Is it the correct size for your home? Will it provide the efficiencies you are looking for? Is the price point one you’re comfortable with? Will the system be quiet enough for your house? Will it be beneficial for your indoor air quality? It can be overwhelming. On top of all the questions you have, some HVAC knowledge seems just out of reach. The acronyms and shorthand that industry professionals use can create questions for the average individual. Lucky for you, the team at Gee & Missler Heating & Air Conditioning are breaking down the system ratings to give you a better understanding as you begin shopping:

Annualized Fuel Utilization Efficiency (AFUE): This efficiency rating is a ratio that links how much of the fuel you use in your furnace to the amount turned into useable heat. The higher the percentage of heat used, the better the system rating.

If your system has an AFUE rating of 85, that means the system converts 85 percent of the fuel used into useable heat. If you are looking for a highly efficient system, you’ll want one that has an AFUE of 90 or higher. Lennox carries residential furnaces with ratings up to 98.7—the highest in the industry.

Seasonal Energy Efficiency Ratio (SEER): The SEER rating is used to measure both heat pumps and air conditioners. A lot like AFUE, this ratio measures how much of the fuel used to power an HVAC system is converted to cooling output. The higher your unit’s SEER, the more efficiently it runs.

Minimum SEER ratings differ between regions. Choosing a high efficiency model may be more expensive on the front end, but you’ll see greater energy savings throughout the years. Lennox carries air conditioners with SEER ratings up to 26—another industry leading rating.

Heating Seasonal Performance Factor (HSPF): Looking into heat pumps? This is the rating to keep in mind. A higher rating indicates a more efficient heat pump. If you want a model that’s ENERGY STAR® efficient, you’ll need a rating above an 8.2—as well as a SEER rating above 12.

Minimum Efficiency Reporting Value (MERV): Air filters have holes that allow air and particles to move through your home. MERV measures the size of the holes. The higher the rating, the smaller the holes in the filter—and the fewer debris particles that get into your home. If you’re wanting a more efficient filter, find one with a MERV rating of 10 or higher.

Air filters are essential to the quality of air in your home. Make sure to find the rating that works with your home, with your system and change the filter frequently.

Finding an HVAC system that fits with your home, your energy efficiency needs and your desired comfort starts with understanding ratings. If you’re ready to find the answer for your home comfort, or you have more questions about system ratings, call the pros at Gee & Missler Heating & Air Conditioning. You can reach us at 734-363-8907 We’ll work with you to find the best solution and get to the bottom of all your questions.