What Is a SEER Rating?
SEER stands for Seasonal Energy Efficiency Ratio. It’s the standard measurement for evaluating the energy efficiency of cooling systems like central air conditioners, ductless mini-splits, and heat pumps. Because these systems operate outdoors—often in hot, humid conditions—their efficiency fluctuates as temperatures rise.
SEER ratings represent an average measurement of performance throughout an entire cooling season, rather than at one specific moment. To calculate the SEER, manufacturers simulate various weather conditions from late spring through early fall. They then measure the system’s total cooling output in BTUs against the total electricity used in kilowatt-hours (kWh). The higher the SEER rating, the more efficiently the unit performs.
What Are SEER2 Ratings?
To provide a more accurate efficiency comparison, the U.S. Department of Energy introduced SEER2 in 2023. The updated SEER2 rating system follows the same formula—cooling output divided by energy consumed—but uses updated testing protocols.
SEER2 ratings are measured under higher static pressure to reflect real-world airflow restrictions caused by issues like dirty filters or duct leaks. While this difference might seem small, it provides a more realistic picture of how a system will perform in your home.
Fortunately, many air conditioners now list both SEER and SEER2 ratings, and online tools are available to help convert between the two if needed.
How to Compare AC Units Using SEER Ratings
SEER ratings are designed to help homeowners compare the efficiency of different systems and estimate seasonal energy usage. The Department of Energy requires that all new air conditioning units meet a minimum efficiency standard—currently 14 SEER (or 13.4 SEER2) in northern states like Utah.
Each step up in SEER rating generally translates to just over a 7% improvement in energy efficiency. For example, a 15 SEER (or 14.3 SEER2) unit will use about 7% less electricity than a 14 SEER model. In the Bountiful area, this could save you anywhere from $20 to $40 annually. Upgrading to a 20 SEER unit could save you between $70 and $140 per year compared to a basic 14 SEER system—depending on your home's insulation, AC size, and usage habits.
If your current unit was installed before 2006, you could see even greater savings. Systems installed prior to that year may have efficiency ratings as low as 10 SEER. Replacing a 10 SEER unit with a 14 SEER model could cut your cooling costs by up to 28%—or even more if the old system has degraded over time.
While some of today’s most efficient models reach up to 28 SEER, it's important to weigh the benefits against the cost. High-SEER systems carry a higher upfront price tag, and while they reduce operating costs, the savings may not always offset the investment.
Balancing Cost vs. Efficiency
When choosing a new AC, start by identifying your budget. From there, compare systems within your price range and estimate your potential savings over the typical 15-year lifespan of the equipment. If the reduced energy costs justify the added expense, investing in a higher-SEER unit can be a smart long-term decision.
Let’s say you're considering a 3-ton system and comparing a 14 SEER to a 20 SEER unit. The 20 SEER option may save you about $100 a year in electricity—adding up to roughly $1,500 over 15 years. If the more efficient system fits within your budget or comes close when accounting for the long-term savings, it’s likely a worthwhile upgrade.
Expert AC Guidance in Bountiful and Salt Lake City
At Blue Best Plumbing, Heating, Air, & Generators, our team has spent over 20 years helping homeowners in Bountiful and the Salt Lake City Metro area choose the best cooling solutions. Whether you need help selecting a new AC, want to maximize system efficiency with proper maintenance, or require expert repairs, our team is here to help.
With a team that has over two decades of experience, Blue Best Plumbing, Heating, Air, & Generators proudly delivers top-quality air conditioning services throughout Bountiful and the greater Salt Lake City area. Whether you’re looking for a new AC installation or need help selecting the most energy-efficient system for your home, our knowledgeable team is here to guide you every step of the way. We also offer expert maintenance and repair services to keep your cooling system running at peak performance for years to come. In addition to AC, we specialize in comprehensive heating and plumbing solutions. Have questions or ready to book service? Contact Blue Best Plumbing, Heating, Air, & Generators today to schedule your appointment.
