What do HVAC ratings mean?

August 23, 2018

If you are looking for a new heating and cooling system, you have a lot of different features to think about. Is it the correct size for your home? Will it provide the efficiencies you are looking for? How does the system work with your finances? Will the HVAC system be quiet enough for your house? How will it impact the air quality? That’s a lot to think about. On top of all the inquiries you have, some HVAC knowledge seems just out of reach. The acronyms and shorthand that industry professionals already know can create questions for the average homeowner. Lucky for you, the experts at Allstar 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. You’ll find that the better systems have a higher percentage of heat used.

If your system has an AFUE rating of 85, that means the system turns 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): This rating is used in both air conditioners and heat pumps. Similar to AFUE, this ratio looks at how much of the fuel used to power an HVAC system is converted to cooling output. The higher the SEER rating, the more efficient your system is operating.

Minimum SEER ratings vary 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): Have a heat pump? This is the heating efficiency rating you need to know. A higher rating indicates a more efficient heat pump. If you want to find a solution that’s ENERGY STAR® efficient, then look for a model with 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 circulate through your home. MERV assesses 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 seeking a more efficient filter, find one with a MERV rating of 10 or higher.

Air filters are critical 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.

These ratings will be important as you search for a solution that meets your needs. If you’re ready to find the model that will work for you, or you have more questions about system ratings, call the experts at Allstar Heating & Air Conditioning. You can reach us at 805-242-9638 We’re happy to answer any questions you have and show you options that can work for your home.