What HVAC Energy-Efficiency Ratings Mean

Are you evaluating the efficiency ratings of new HVAC systems? Or are you interested in knowing the rating on your existing HVAC system. In either case, you can find the efficiency rating and estimated annual operating costs by reading the yellow Energy Guide sticker around the side of the unit. Here’s more information about the various ratings you might read and what they mean.

What Is a SEER Rating?

SEER is short for Seasonal Energy Efficiency Ratio, a measurement of air conditioning efficiency. The SEER rating signifies the cooling output of an air conditioning unit over a full cooling season, divided by the total amount of energy utilized within that time frame. A higher SEER rating means greater energy efficiency and lower energy bills.

Today, the minimum SEER rating for new air conditioners is 14 SEER in the northern U.S. and 15 SEER in the southern U.S. This is an increase from the old minimum stipulation of 13 SEER in the north and 14 SEER in the south, which was in effect from 2015 to 2022. This adjustment is one part of the U.S. Department of Energy’s (DOE) persistent efforts to reduce energy consumption and greenhouse gas emissions.

Nowadays, top-quality air conditioners boast ratings of 26 SEER or higher, delivering remarkable energy savings. But bear in mind, impressive SEER ratings commonly come with a higher purchase cost. This simply means you should think about both the initial expense and the prospects for ongoing savings when deciding on a new air conditioner.

What Is an EER Rating?

While SEER ratings are more well-known, there’s another efficiency measurement you should know about. It’s called EER, and it stands for Energy Efficiency Ratio. This indicates the performance of an air conditioner under specified operating situations. The EER rating enables you to understand how the system will support the demand on those very hot summer days.

Presently, only the southwest region has a minimum EER rating of 12.2 EER for residential central air conditioners. The highest ratings top out at about 14 EER. Consider that SEER and EER typically correspond, with higher ratings meaning greater overall performance.

What Is an HSPF Rating?

Heating Seasonal Performance Factor (HSPF) ratings are metrics that indicate the measurement of the energy efficiency of air-source heat pumps while in heating mode. HSPF is a percentage of the total heat output in British Thermal Units (BTUs) throughout the heating season to the amount of electricity used in watt-hours. A higher HSPF rating indicates a more efficient heat pump.

The minimum HSPF rating for new heat pumps is 8.8 HSPF, an improvement from the prior minimum of 8.2 HSPF. By demanding higher minimum HSPF ratings, the DOE is making it more affordable long-term for Americans to use more energy-efficient heating systems in homes and businesses throughout the U.S. You can always settle for the minimum, but it’s a wise choice to get a high-end heat pump with a rating of 13 HSPF or higher for the greatest performance.

What Is an AFUE Rating?

Annual Fuel Utilization Efficiency (AFUE) ratings are an alternative measure of heating system efficiency, but they only relate to furnaces and boilers. AFUE is a ratio of the annual heat output to the energy used during that period. The greater the AFUE rating, the more efficient the heating system.

In 2023, the minimum AFUE rating for new gas furnaces was revised to 81. Prior to this, the several southern states had a minimum of 80 AFUE, and the northern states required ratings of 90 AFUE or higher. Even though you’re not required to buy a system with ratings above the minimum, you’ll cut back on your heating bills by selecting a furnace rated 95 AFUE or higher.

What Is an ENERGY STAR® Rating?

The Environmental Protection Agency (EPA) launched the ENERGY STAR program in the early 1990s to help homeowners and businesses identify the most energy-efficient equipment and appliances available. HVAC equipment, appliances, water heaters, light fixtures, office equipment, electronics and building products that meet or exceed specific criteria can earn ENERGY STAR certification.

ENERGY STAR-rated products go far beyond the minimum requirements to save energy and reduce emissions without sacrificing performance or features. You can also look for the ENERGY STAR Most Efficient designation, which recognizes the best performers in energy efficiency and innovation. The EPA is actually revising the qualification requirements given the new minimum HVAC efficiency standards.

Install an Efficient HVAC System

For help determining which HVAC energy-efficiency rating is right for your budget, call Service Experts Heating & Air Conditioning. We can assess your situation and help you make an informed decision. Rest assured that we offer a range of products from today’s most popular brands, all of which achieve or exceed the minimum efficiency requirements for 2023. We’re so sure you’ll be satisfied with our services that we give you a 100% satisfaction guarantee! For details or to schedule a free HVAC installation quote, please contact a Service Experts office near you.