If you’re shopping for a new air conditioner or heat pump, you’ve likely come across the term SEER rating, but what exactly does it mean?

In simple terms, SEER (Seasonal Energy Efficiency Ratio) is a number that tells you how efficiently your system can cool your home. A higher SEER means better efficiency and, in turn, lower energy costs.

In a warm, humid city like Atlanta, where air conditioners work overtime during the summer, choosing a system with a high SEER rating can make a noticeable difference in comfort and energy savings.

In this blog post, the AC experts at United Air Temp explore how SEER works, what counts as a good SEER rating in 2025, and how it affects your utility bills and overall HVAC performance.

Understanding the SEER Rating System

SEER stands for Seasonal Energy Efficiency Ratio, which measures the cooling output of an air conditioner or heat pump over a typical cooling season divided by the total electric energy input during the same period.

The higher the SEER, the more energy-efficient the system. SEER ratings make it easier to compare units when shopping for a new HVAC system, especially when energy savings are a priority.

What is a Good SEER Rating in 2025?

If your air conditioner is at least 10 years old, it’s likely rated 8 to 10 SEER. Most modern HVAC systems have ratings of 14 to 26 SEER or higher. The higher the number, the more efficient the unit; however, that doesn’t mean you always need the highest SEER available.

• 14 to 16 SEER: Basic efficiency, meets federal minimums
• 17 to 20 SEER: Mid-range efficiency
• 21 SEER or higher: Premium performance

SEER requirements were updated in 2023. In Southeast states like Georgia, the federal minimum SEER requirement is 14 or 13.4 SEER2 for central air conditioners and heat pumps.

How SEER Ratings Impact Your Energy Bills

Higher-SEER systems typically use less energy to provide the same level of cooling, which means lower monthly utility bills.

While SEER ratings are calculated under lab conditions, they still offer a reliable benchmark, especially with the updated SEER2 rating.

Keep in mind that real-world efficiency can vary based on your home’s insulation, ductwork, and system maintenance.

Over time, the energy savings from a high-SEER unit can offset the initial investment, making it a smart long-term choice.

SEER vs. Other Efficiency Metrics

In addition to SEER, there are a few other key efficiency metrics to keep in mind:

• EER (Energy Efficiency Ratio) measures cooling efficiency at a specific temperature. It’s helpful for assessing performance during extreme heat.
• HSPF (Heating Seasonal Performance Factor) measures heating efficiency in heat pumps during the colder months.

SEER is best for overall cooling efficiency across a season, EER is more accurate in peak conditions, and HSPF is your go-to for heating performance. If you live in a climate like Atlanta’s with hot summers and mild winters, SEER and EER should be your main focus.

How to Choose the Right SEER Rating for Your Home

When selecting the right SEER rating, consider your budget, climate, and home usage patterns:

• If you run your AC frequently, a higher SEER can lead to noticeable savings.
• Balance initial cost vs. long-term energy efficiency.
• Ask your HVAC installer about local utility rebates, expected energy savings, and whether your home’s insulation and ductwork can support high-SEER performance.

Ultimately, the right SEER rating provides the comfort you want at a price that makes sense for your household.

Get a High-Efficiency System with United Air Temp

At United Air Temp, we help homeowners in Atlanta find the perfect HVAC system that balances efficiency, cost, and comfort.

Whether you’re replacing an outdated unit or installing a system in a new home, our team can guide you through selecting the ideal SEER rating and ensure your new air conditioner is installed for peak performance.

Call or book your AC installation online and start saving on your energy bills with a high-efficiency system!