Homeowners are always seeking ways to improve comfort and energy savings, and keeping up with changing HVAC regulations plays a key role in that. One of the most important updates in recent years is the transition from the Seasonal Energy Efficiency Ratio (SEER) to the Seasonal Energy Efficiency Ratio 2 (SEER2).
This altered standard of SEER, introduced by the Department of Energy in 2016 with a goal to reduce energy consumption, brings more accurate and realistic testing methods and conditions that better reflect how HVAC systems perform in real-world conditions.
We’ll walk you through the 2025 SEER regulations, how they affect your home’s heating and cooling and what to consider when it’s time to upgrade your system.
What Is SEER2 and Why Is It Important?
SEER2 is the total heat removed from the conditioned space during the time of the year when the cooling system is most in demand. It’s the next generation of AC efficiency ratings. The higher the SEER2 number, the more efficiently your system runs. More efficient systems use less electricity to deliver consistent indoor comfort, which can reduce your energy bills and your home’s carbon footprint.
SEER2 is the updated version of SEER and uses the new M1 testing procedure to better reflect current field conditions, including ductwork resistance. SEER did not accurately emulate the influence of external static pressure and ductwork on HVAC products.
By adopting SEER2, the industry moves toward a more sustainable future. These updated standards support energy conservation efforts while giving homeowners better insight into long-term savings. Every air conditioner and heat pump with an assigned SEER number must be retested to SEER2. By January 2023, manufacturers were required to redesign system components to meet the new M1 testing requirements.
What Homeowners Should Know About the New SEER Requirements
In 2025, you’ll notice all new heat pumps and air conditioning systems will have a SEER2 rating and not a SEER rating. These changes encourage homeowners to install more efficient equipment that reduces energy usage and utility costs over time.
Read the SEER rating on your Energy Guide label, and reference the lower rating to see if your equipment meets the new SEER2 rating requirements. For example, a rating of 14.3 SEER2 is expected for split system heat pumps, while a single-packaged heat pump can remain at 13.4 SEER2.
If you want to convert SEER to SEER2, simply divide the old SEER rating by 1.05, and this will give you an estimate of what your SEER2 rating is. Think of it in terms of the new test being harder than the old one, so your score will most likely be lower.
Considerations for Homeowners When Choosing a New HVAC System
As homeowners plan for HVAC installations and replacements in 2025, it’s important for them to keep the following considerations in mind following updated SEER2 regulations:
- SEER2 rating: Double-check the system’s SEER2 label to confirm it meets or exceeds regional minimums. This will ensure your new HVAC system meets SEER2 requirements.
- Size and load: It’s essential to have a professional HVAC technician perform a proper load calculation to determine the right-sized system for your home. An oversized or undersized system can lead to inefficiencies, discomfort and increased energy consumption.
- Professional installation: A proper installation is critical for your HVAC system’s optimal performance and efficiency. Ensure you hire a qualified HVAC contractor who follows industry best practices and adheres to local building codes. A well-installed system can maximize energy efficiency, enhance indoor comfort and extend the lifespan of the equipment.
- Maintenance and service: To ensure your HVAC system operates at its peak efficiency, it’s vital to schedule regular maintenance and service after the installation is complete. This includes cleaning or replacing filters, inspecting ductwork and checking refrigerant levels. Regular care improves energy efficiency and helps prevent costly breakdowns, extending the lifespan of your equipment.
Find Your Replacement HVAC System at Buckner’s Heating-Cooling-Plumbing
The SEER2 standards for 2025 signal a shift toward a lower SEER2 equipment rating for greater sustainability and more thorough testing procedures. If you’re upgrading due to system age or rising energy bills, knowing what to look for in your next unit is key.
If you need help determining what type of air conditioner to install for your next AC installation or replacement project, Buckner’s Heating-Cooling-Plumbing is here to help. Our expert HVAC technicians are continuously trained on all the latest industry developments and can help you select a system that is compliant with current standards.
Contact our team at (913) 914-2942 to request air conditioner installation or replacement in Kansas City, MO, today.
