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Understanding SEER2 Ratings: Choosing the Right AC Unit for Your Home

As homeowners trying to keep homes comfortable while reducing energy expenses, understanding SEER2 ratings is essential. This will help with being able to select the best system for improved AC efficiency in Milford, CT.

SEER2, or Seasonal Energy Efficiency Ratio 2, is the updated efficiency standard for air conditioners and heat pumps introduced by the US Department of Energy on January 1, 2023. It replaces the older SEER rating, offering a more realistic measurement by accounting for the real-world conditions your system faces every day.

What SEER2 Measures

SEER2 calculates how much cooling (in BTUs) a system delivers per watt-hour of electricity consumed over an entire cooling season. The key difference from the original SEER rating is that SEER2 testing uses higher static pressure to better reflect actual operating conditions in most homes. This means a unit labeled “16 SEER2” today performs more realistically than the old “16 SEER” rating would suggest, giving homeowners a clearer picture of real energy efficiency.

Minimum SEER2 Ratings by Region

The Department of Energy sets regional minimum efficiency standards based on climate needs. Connecticut falls into the Northern region of the US, where all new central air conditioners must meet a minimum SEER2 rating of 13.4. Here’s how the standards break down across the country:

  • Northern U.S. (including Connecticut): Minimum 13.4 SEER2
  • Southeast and Southwest: Minimum 14.3 SEER2 for smaller systems and 13.8 SEER2 for larger ones

If you’re replacing your AC system, it’s important to make sure the unit you choose meets or exceeds these updated requirements.

Why a Higher SEER2 Rating Pays Off

  • Energy Savings: The higher the SEER2, the more energy efficient the system is. Over time, that can mean significant savings on your utility bills. For example, a Connecticut household using a minimum-standard 13.4 SEER2 unit might spend around $1,100 a year on cooling costs. Upgrading to a 16 SEER2 system could bring that cost closer to $900 a year, and an 18 SEER2 unit could drop it even further, to around $700 a year. Over the lifespan of your system, often 15 to 20 years, that’s thousands of dollars in savings.
  • Improved Comfort and Performance: Higher-SEER2 air conditioners often include advanced features like variable-speed compressors and smart thermostat compatibility. These upgrades help maintain a more consistent temperature throughout your home, control humidity better, and reduce noise levels. Many higher-rated units also qualify for federal tax credits and local utility rebates, which can help offset the initial cost of the upgrade.

Choosing the Right Unit

  1. Check Your Current Rating
    If your current system is older, it likely uses the old SEER scale and may be much less efficient than today’s minimum standard.
  2. Aim Higher Than the Minimum
    For Connecticut’s warm and humid summers, consider investing in a unit with a SEER2 rating of 15 to 18 for the best balance of upfront cost and long-term savings.
  3. Explore Incentives
    Many utility companies offer rebates for installing high-efficiency AC units. Be sure to ask your installer about any local or federal incentives that could help lower the cost.
  4. Work with a Professional
    Always consult a qualified HVAC contractor to ensure your new system is sized correctly, installed properly, and running at peak efficiency.

Maximize Your Savings

In Connecticut, you’re required to install at least a 13.4 SEER2 unit, but going beyond the minimum makes sense for your comfort and your wallet. A modern, high-efficiency AC system will help you stay cool, lower your energy bills, and add value to your home for years to come.

Heating and Cooling Experts Since 1959. Contact M&R Mechanical Services today with any questions about AC efficiency in Milford, CT.

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