About The Author: Travis Baugh is a Digital Brand Marketing Manager for Bryant, where he creates clear, helpful content to guide homeowners through heating, cooling, and indoor air quality decisions. His goal is to empower readers with the knowledge they need to choose the right comfort solutions for their home—confidently and comfortably.
What is a SEER Rating for Air Conditioners?
By Travis Baugh | Expert Review By Michelle Notaro - Product Manager, Air Conditioners
A SEER (Seasonal Energy Efficiency Ratio) rating measures the energy efficiency of an air conditioner or heat pump. Bryant central air conditioners currently offer SEER2 ratings up to 21 with the Evolution™ Extreme Variable Speed Air Conditioner.
A SEER (Seasonal Energy Efficiency Ratio) rating measures the energy efficiency of an air conditioner or heat pump over a typical cooling season. A higher SEER2 rating generally means a system uses less electricity to provide the same amount of cooling under the rating conditions.
Understanding the SEER rating definition is the first step toward making a smarter, future-focused investment in your home's comfort. Today, SEER2 is the current rating standard for residential central air conditioners and heat pumps. SEER2 uses updated test procedures designed to better represent conditions in residential installations.
Why Do SEER Ratings Matter for Your Home?
SEER and SEER2 ratings matter because they help homeowners compare the seasonal cooling efficiency of different HVAC systems. Systems with higher ratings can use less electricity for the same cooling output under comparable conditions, which can reduce cooling costs.
Bryant offers central air conditioners across several efficiency levels, including models rated up to 21 SEER2. For example, Bryant's Evolution™ Extreme 191VAN variable-speed air conditioner is rated up to 21 SEER2, while Bryant also offers Preferred™ and Legacy™ models at lower SEER2 ratings.
In 2023, the HVAC industry transitioned to the SEER2 standard to reflect updated residential testing conditions. SEER2 ratings should be compared with other SEER2 ratings rather than directly with older SEER ratings.
What is a Good SEER Rating?
A good SEER rating depends on your home's climate, energy costs, budget, and how long you plan to stay in your home. In general, higher SEER2 ratings indicate a more efficient air conditioner, which can reduce cooling energy use and operating costs compared with lower-efficiency systems.
For many homeowners, comparing systems in the 16-to-21-SEER2 range can provide a useful starting point when evaluating higher-efficiency Bryant air conditioners. The appropriate rating depends on the home's cooling load, local requirements, equipment cost, expected usage, and available incentives. Bryant's current central air conditioner lineup ranges from models around the minimum efficiency level to models rated up to 21 SEER2.
The best SEER2 rating for your home depends on several factors, including:
- Climate: Homes in hotter regions that run air conditioning for more months of the year may benefit more from higher-efficiency equipment.
- Electricity costs: Areas with higher utility rates may see faster payback from investing in a more efficient system.
- Home usage patterns: Homes that are occupied frequently or maintain consistent temperatures may benefit from higher SEER2 ratings.
- Budget and expected ownership: A higher-efficiency system typically costs more upfront but can provide savings over the equipment's lifespan.
When comparing air conditioners, it's important to look beyond SEER2 alone. Features such as variable-speed compressors, proper system sizing, quality installation, and regular HVAC maintenance all impact real-world energy performance. A qualified HVAC professional can help determine the right efficiency level based on your home's needs and local conditions.
How Much Energy Can a Higher SEER2 Rating Save?
The percentage reduction in cooling electricity can be estimated by comparing SEER2 ratings, although actual savings vary by climate, equipment size, runtime, electricity rates, installation quality, and other factors.
For example, assuming the same cooling output and operating conditions, moving from a 14 SEER2 system to a 20 SEER2 system would require approximately 30% less electricity for the rated cooling output:
| SEER2 Rating | Relative Cooling Electricity* | Electricity Reduction vs. 14 SEER2 |
| 14 SEER2 | 100% | - |
| 16 SEER2 | 87.5% | 12.5% less |
| 18 SEER2 | 77.8% | 22.2% less |
| 20 SEER2 | 70.0% | 30.0% less |
| 21 SEER2 | 66.7% | 33.3% less |
*Illustrative comparison based on the inverse relationship between rated cooling efficiency and electricity consumption. Actual household energy savings will vary.
For an illustrative 3-ton system operating for 1,000 equivalent full-load cooling hours per year, a 14 SEER2 system would use about 2,571 kWh for the rated cooling output, compared with about 1,800 kWh for a 20 SEER2 system—a difference of approximately 771 kWh. At $0.18/kWh, that would equal about $139 in annual electricity savings. Actual savings depend on local climate, runtime, electricity rates, equipment performance, and operating conditions.
How Do SEER2 vs. EER Ratings Differ?
SEER2 measures a central air conditioner's efficiency over an entire cooling season with varying temperatures. EER2 (Energy Efficiency Ratio) measures efficiency at a single, specific operating condition—typically during peak summer heat.
Both metrics are valuable when evaluating an HVAC system, but they serve different purposes:
- SEER2 gives homeowners a realistic picture of year-round performance and long-term energy costs.
- EER2 helps HVAC professionals assess how well a system will perform on the hottest days of the year.
Bryant publishes both SEER2 and EER2 ratings for its air conditioners so homeowners and HVAC professionals can evaluate seasonal and specific-condition efficiency. The Evolution™ Extreme Variable Speed Air Conditioner offers up to 21 SEER2 and 12 EER2.
How to Choose the Right SEER Rating for Your Home
To choose the right SEER rating, you must evaluate your local climate, your upfront budget, and the availability of local rebates. Bryant's SEER2 Selection Framework can help organize those factors into three steps:
1. Climate and Cooling Demand
If you live in a region with long, hot summers, your air conditioner may run more frequently. A higher-SEER2 system has greater potential to reduce cooling electricity use when it operates frequently. Bryant currently offers central air conditioners ranging up to 21 SEER2, giving homeowners multiple efficiency levels to compare.
2. Budget and Expected Ownership
Systems with a higher SEER2 rating typically carry a higher upfront cost. Compare the additional equipment and AC installation cost with the estimated annual energy savings rather than assuming a higher rating will always pay for itself. Financing options can make your purchase more manageable by breaking the cost down into monthly payments. Financing options can make your purchase more manageable by breaking the cost down into monthly payments.
3. Available Incentives
Many utilities and local programs offer rebates for qualifying high-efficiency HVAC systems. Eligibility requirements vary by program, equipment type, location, and installation date, so homeowners should verify current requirements before using an incentive to justify a particular SEER2 rating.
The federal Energy Efficient Home Improvement Tax Credit for central air conditioners applied to qualifying equipment purchased and installed through December 31, 2025; it should not be presented as a current 2026 incentive without confirming a new applicable law or program. For 2025, ENERGY STAR listed a minimum of 17.0 SEER2 and 12.0 EER2 for qualifying split-system central air conditioners and 16.0 SEER2 and 11.5 EER2 for qualifying packaged central air conditioners.
Mike Lea, co-owner of Lea Heating & Air Conditioning in East Dundee, IL, compares ignoring the SEER2 rating to ignoring miles per gallon when buying a car.
“That SEER rating is basically like miles per gallon for an automobile,” Lea explained. “It tells you how efficiently the unit will operate using electricity.” “A higher SEER2 rating indicates a more efficient unit, which results in lower cooling bills, better temperature control, and improved humidity management,” Lea said.
How to Find the SEER Rating on Your Current Air Conditioner
The SEER rating on an existing air conditioner is typically printed on the yellow "EnergyGuide" sticker affixed to the side of the outdoor condenser unit. If the sticker is missing, locate the model number on the unit's data plate and look it up on the manufacturer's website—or contact a local dealer for assistance.
For newer equipment, look for the SEER2 rating rather than the older SEER rating. Knowing your current system's efficiency rating helps you understand where you stand on efficiency and whether an upgrade could deliver meaningful savings.
SEER Rating By Climate Zone
To ensure nationwide energy conservation, the Department of Energy established these minimum efficiency standards for residential central air conditioners. The requirements vary by equipment type and region.
For split-system central air conditioners, the federal minimum beginning January 1, 2023, is 13.4 SEER2 under the applicable DOE standard. Bryant also identifies North and South regional requirements for certain air conditioner equipment, with 13.4 SEER2 in the North and 14.3 SEER2 in the South for applicable split-system air conditioners.
- Northern States: 13.4 SEER2 for applicable split-system air conditioners
- Southern States: 14.3 SEER2 for applicable split-system air conditioners
- Heat Pumps (Nationwide): 14.3 SEER2 for split-system heat pumps under the applicable federal standard
These figures are minimum efficiency requirements, not recommendations for every home. Bryant's current central air conditioner lineup includes models ranging from these baseline efficiency levels to systems rated up to 21 SEER2.
Connect With Your Local Bryant Dealer On SEER2 Ratings
Still have questions about what SEER rating is right for you? Connect with your local Bryant dealer. A Bryant dealer can evaluate your home's cooling load, existing equipment, climate, and installation requirements and help you compare Bryant systems by SEER2 rating and features. Find a Bryant dealer near you to handle your AC replacement, AC maintenance and AC tune up needs.
FAQs on SEER Rating
The required SEER2 rating varies by region, but most residential systems must meet a minimum of 13.4 SEER2 in northern states and 14.3 SEER2 in southern states, per 2023 federal guidelines.
Investing in a higher SEER2-rated unit can be worth it as it can lead to greater energy efficiency, help lower cooling bills, and improve performance—especially if you live in a hot climate or use your system frequently.
SEER stands for Seasonal Energy Efficiency Ratio and measures how efficiently an air conditioner cools over a typical season. Higher SEER ratings mean greater energy efficiency and lower cooling costs.
Yes—upgrading from 14 to 16 SEER can be worth it as it helps improve the efficiency of your AC unit, reduce energy bills and increase comfort.
Modern air conditioners can reach ratings up to 21 SEER2 or higher, depending on the model and technology, such as inverter-driven compressors.
A 20 SEER system is more efficient than an 18 SEER model, but the higher upfront cost of the 20 seer unit may not always justify the savings from the efficiency of the unit depending on your climate and AC usage.
For 2025, most federal tax credits require ENERGY STAR® certified systems, which generally means ≥16 SEER2 for split systems and ≥15.2 SEER2 for packaged units. Always confirm current requirements before purchase.
BTU measures an air conditioner’s cooling capacity, while SEER measures efficiency. In short, BTU tells you how much cooling power you get, and SEER tells you how efficiently it’s delivered. Learn more about BTU.
Generally, yes. Higher SEER units often feature advanced technology like variable-speed compressors and sound-dampening insulation. This allows the system to operate at lower speeds, maintaining your comfort level while remaining "quiet as a whisper."
You can usually find the SEER rating on the yellow "EnergyGuide" sticker attached to the side of your outdoor condenser unit. If the sticker is missing, locate the model number on the unit's data plate and look it up on the manufacturer's website or contact a local dealer for assistance.
SEER stands for Seasonal Energy Efficiency Ratio. It measures how efficiently an air conditioner or heat pump cools a home over an entire cooling season compared to the amount of electricity it uses. A higher SEER rating means greater energy efficiency and typically lower operating costs.
Actual savings vary based on your climate, usage habits, local electricity rates, and the SEER rating of your existing system. Homeowners upgrading from a low-efficiency unit (e.g., 10 SEER) to a high-efficiency system (e.g., 18 SEER2) can see substantial monthly reductions. A local Bryant dealer can provide a personalized savings estimate based on your home's specific conditions.
Yes, in most cases. However, the overall efficiency gains depend on factors such as duct condition, insulation quality, and home size. A professional HVAC assessment ensures your system is properly matched to your home for maximum efficiency.
About The Expert Reviewer: Michelle Notaro is a Product Manager for Residential Air Conditioners at Bryant, helping guide the direction of residential cooling products. She considers changing homeowner priorities, emerging market developments, and regulatory requirements to support air conditioning solutions that address today's comfort and efficiency expectations.
Learn More About Air Conditioners
- Get in the know on air conditioning service
- Find out what is an inverter air conditioner
- Discover the factors in choosing the best air conditioner and what size air conditioner you need
- Find out how long do AC units last?
- Discover the difference in a heat pump vs air conditioner
