What do HVAC ratings mean? Posted August 23, 2018 Technology When it’s time for you to shop for a new home comfort system, you have to consider a lot of factors. Is it the right size for your home? Will it be energy efficient? Will it work with your budget? Will the system be quiet enough for your house? How will it impact the 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 may include can be confusing for the average homeowner. Luckily, the experts at Air Temperature Control 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 compares 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 converts 85 percent of the fuel used into useable heat. A system with an AFUE of 90 or higher is considered high efficiency. Lennox offers 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. Much like 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 carries air conditioners with SEER ratings up to 26—another industry leading rating. Heating Seasonal Performance Factor (HSPF): Looking into heat pumps? This will be what you’ll want to take a look at as far as heating efficiency. The higher your heat pump is rated, the more efficient it is. If you are in the market for a heat pump 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 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 make their way into your home. If you’re seeking a more efficient filter, find one with a MERV rating of 10 or higher. Air filters are key to indoor air quality. Make sure to find the rating that works with your home, with your system and change the filter on a consistent basis. 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 best solution, or you have more questions about system ratings, call the team at Air Temperature Control. You can reach us at 478-784-1109 or by arranging an appointment with us online. We’ll work with you to find the best solution and get to the bottom of all your questions.