What do HVAC ratings mean?

Technology

If you are looking for a new heating and cooling system, there are a lot of factors to think about. Is it the right size for your home? Will it provide the efficiencies you are looking for? Will it work with your budget? Will the system be quiet enough for your home? What kind of air quality can you expect? You have a lot to think about when considering the best solution. On top of all the factors you want to learn more about, some HVAC knowledge seems just out of reach. The acronyms and shorthand that industry professionals may include can create questions for the average person. Fortunately, the professionals at Alltemp Comfort Services LLC 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 turns 85 percent of the fuel used into useable heat. A system with an AFUE of 90 or higher is considered high efficiency. Lennox has residential furnaces with ratings up to 98.7—the highest in the industry.

Seasonal Energy Efficiency Ratio (SEER): Both heat pumps and air conditioners use this rating. Similar to AFUE, this ratio measures how much of the fuel used to power an HVAC system is converted to cooling output. A more efficient system will have a higher SEER rating.

Minimum SEER ratings change between regions. A high efficiency model that provides more energy savings in the long run will generally be a little more expensive. Lennox offers air conditioners with SEER ratings up to 26—another industry leading rating.

Heating Seasonal Performance Factor (HSPF): Have a heat pump? This is the rating to keep in mind. You’ll want to look for heat pumps with a higher rating if efficiency is your goal. If you are in the market for a heat pump that’s ENERGY STAR® efficient, that requires a rating above an 8.2—as well as a SEER rating above 12.

Minimum Efficiency Reporting Value (MERV): Air filters have holes that let air and particles to flow within your indoor space. MERV takes a look at the size of the holes. The higher the rating, the smaller the holes in the filter—and fewer particles that get into your home. If you’re looking for a more efficient filter, find one with a MERV rating of 10 or higher.

Air filters are critical to indoor air quality. Make sure to find the rating that works with your home, with your system and change the filter regularly.

These ratings will be important as you search for a solution that meets your needs. If you’re ready to find the best solution, or you have more questions about system ratings, call the team at Alltemp Comfort Services LLC. You can reach us at 803-220-0753 or by scheduling an appointment with us online. We’ll work with you to find the best solution and get to the bottom of all your questions.

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