Mauzy Cooling, Heating, Plumbing, and Electrical proudly serves homeowners across San Diego County with top-quality comfort solutions rooted in honesty, care, and craftsmanship. As the HVAC industry continues to evolve, one of the most important updates for homeowners to understand is the new SEER2 efficiency standard.
If you’re planning to repair or replace your air conditioner or heat pump in 2025, these new rules directly impact what systems are available, how they perform, and how much energy (and money) you can save.
What Is SEER2?
SEER stands for Seasonal Energy Efficiency Ratio — a measurement of how efficiently an air conditioner or heat pump converts electricity into cooling throughout the season. The higher the SEER rating, the more efficient the system.
In 2023, the U.S. Department of Energy (DOE) introduced SEER2, an updated testing standard that better reflects real-world operating conditions — such as duct resistance, fan power, and airflow restrictions.
This change means newer systems are tested under more realistic conditions, giving homeowners a truer picture of actual performance and energy savings.
What’s Changing in 2025
By 2025, manufacturers and contractors must fully comply with SEER2 requirements for all newly produced and installed HVAC equipment.
For San Diego County and other regions in the Southwest, that means:
- Minimum SEER2 rating for central air conditioners: 14.3
- Minimum SEER2 rating for heat pumps: 15.0
- Higher energy efficiency expectations for all new systems
Older SEER-rated equipment can no longer be installed once inventory runs out, though existing systems can still be serviced.
Why SEER2 Matters to Homeowners
The SEER2 transition isn’t just a regulatory change — it’s a major step forward for energy savings, comfort, and sustainability.
1. Real-World Efficiency
SEER2 reflects how your HVAC system actually performs in your home — not just in a lab. This means your energy bills will better align with the ratings printed on your unit.
2. Lower Utility Costs
A higher SEER2 rating means less energy wasted. Homeowners upgrading from older 10–12 SEER systems can often save 20–40% on energy costs annually.
3. Improved Performance
SEER2-compliant systems use advanced technologies like variable-speed compressors and ECM blower motors, which deliver steadier temperatures, quieter operation, and better humidity control.
4. Environmental Benefits
More efficient HVAC systems reduce carbon emissions, helping California meet its energy goals and supporting a greener San Diego.
SEER vs. SEER2: Understanding the Difference
Because SEER2 uses a new testing procedure, you can’t directly compare SEER and SEER2 ratings. However, you can estimate the difference using a simple conversion:
SEER2 ≈ SEER × 0.95
For example:
- A 16 SEER system ≈ 15.2 SEER2
- A 14 SEER system ≈ 13.3 SEER2
So when shopping for new HVAC equipment, make sure you’re looking at SEER2 values, not the old SEER ratings, to ensure compliance with current standards.
What This Means for San Diego Homeowners
San Diego’s mild coastal climate and hot inland valleys mean your HVAC system runs almost year-round. Upgrading to a SEER2-compliant, high-efficiency system isn’t just about following regulations — it’s about maximizing comfort and savings in our unique environment.
You’ll notice benefits like:
- Shorter cooling cycles on hot days
- Lower monthly utility bills
- Consistent comfort across multiple zones
- Quieter indoor operation
Mauzy’s technicians are trained in the latest SEER2 standards and can help you choose the right system for your home, budget, and lifestyle.
Incentives and Rebates Available
With new energy standards come new opportunities for savings. Homeowners upgrading to SEER2-rated equipment may qualify for:
- Federal tax credits through the Inflation Reduction Act (IRA)
- State and local utility rebates for energy-efficient upgrades
- Manufacturer rebates available through Mauzy’s preferred partners
Our team stays current on all available incentives to ensure you get the best value on your new system.
Preparing for the Transition
If your system is over 10 years old or struggling to keep up with San Diego’s summer heat, now is the time to plan your upgrade. Supply chain shifts mean older inventory is being phased out quickly — and waiting could limit your options or increase costs.
Mauzy can help you:
- Evaluate your system’s current SEER rating and performance
- Compare replacement options that meet SEER2 standards
- Identify rebates and financing programs
- Schedule installation with minimal disruption
Why Work With Mauzy
For decades, Mauzy has led the way in bringing energy-efficient home comfort solutions to San Diego County. Our licensed HVAC, plumbing, and electrical professionals combine advanced technical knowledge with hometown care.
We don’t just install new systems — we help you make informed, cost-effective decisions that benefit your home for years to come.
Call to Action
Considering a new HVAC system in 2025?
Call Mauzy today to learn how SEER2 standards affect your options — and how you can save more with a high-efficiency upgrade.Ready to get ahead of the new requirements?
Schedule your consultation with Mauzy and experience comfort done right — efficient, affordable, and built for San Diego living.