Category: Air Conditioning

If you're shopping for a new air conditioner, you've likely come across the term “SEER2” — and for good reason. The SEER2 rating plays a huge role in how much energy your air conditioning system uses, how much you’ll spend on utilities, and even how comfortable your home feels. 

But what SEER2 rating should you look for in a new AC? Let’s break it down in plain English so you can make the smartest choice for your home, your budget, and the environment.

What Does SEER2 Mean in HVAC?

SEER2 stands for Seasonal Energy Efficiency Ratio 2, and it's the updated standard used to determine the efficiency of your air conditioner or heat pump. The higher the SEER2 number, the more efficient the unit is at converting electrical energy into cool air during an average cooling season. 

Think of it like miles per gallon for your car, but instead of fuel, we’re talking watts and temperature control.

This rating is part of a newer testing protocol introduced by the Department of Energy alongside the new 2025 EPA refrigerant regulations. It reflects how well systems perform under more realistic external static pressure conditions, making SEER2 a better reflection of what you can expect in actual home installations.

Choosing the Right SEER2 Rating for Your Home

When it comes to choosing a new air conditioner, there’s no one-size-fits-all answer. The ideal AC SEER2 rating for your home depends on several factors, including your climate, budget, and how often you use your HVAC system.

Here’s a general guide:

Minimum Standard SEER2: In many regions, the government requires new central air conditioners to have a minimum SEER2 of 13.4 to 14.3, depending on your geographic zone. Here in Pennsylvania, the minimum rating must be at least 13.4 for air conditioners. 

Mid-Range SEER2 (15.2–17.5): Units in this range strike a great balance between upfront cost and long-term savings through energy efficiency.

High SEER (18 and above): These are premium models ideal for homeowners who want top-tier efficiency and comfort, especially in hot, humid climates where ACs work overtime.

For homeowners prioritizing home improvement, investing in a high SEER2 AC unit means you’ll see reduced utility bills and may qualify for rebates or Energy Star incentives.

Other Factors to Consider Beyond SEER2

While the HVAC SEER2 rating is important, it’s not the only number that matters when buying a new AC unit. Your system's overall efficiency also depends on other components and conditions, like:

• Duct sealing and insulation
• Whether you use a smart thermostat
• The age and efficiency of your furnace, boiler, or heat pump
• Regular maintenance like changing your air filter
• Your home’s insulation and ventilation

You should also consider the type of refrigerant used, compressor quality, and warranty coverage. If you’re aiming for maximum energy conservation, a variable-speed compressor and air source heat pump or ground source heat pump can be game changers.

And let’s not forget comfort — systems with better humidity control and quieter operation can drastically improve your indoor experience.

SEER2 Ratings and the Environment

If you're eco-conscious, your air conditioner’s efficiency directly impacts the greenhouse gas emissions your home contributes. Higher SEER2 ratings reduce carbon output, especially when paired with solar energy or natural gas systems that are designed for low energy consumption.

Whether you’re concerned about rising electricity costs or simply want to make your home more sustainable, upgrading to a better AC SEER2 rating is a smart move. It helps you lower fuel use, reduce greenhouse gas emissions, and keep your home more comfortable without breaking the bank.

So, What’s the Best SEER2 Rating for You?

Here’s the bottom line: If you’re on a tighter budget, a 13.4 or 14.3 SEER2 system is still a major upgrade from older units with ratings under 10. If you plan to stay in your home long-term and want better energy efficiency, systems in the 15–17 range offer the best mix of cost, performance, and warranty protection. And if you want top-of-the-line efficiency and comfort, opt for a high SEER2 model with smart thermostat compatibility and ultra-low energy use.

If you’re unsure, refer to an air conditioning SEER2 rating chart or compare AC unit ratings with help from your local HVAC expert at G.F. Bowman.

Ready to Upgrade Your AC?

Choosing the right SEER2 HVAC system doesn’t have to feel overwhelming. With the right balance of efficiency, performance, and price, your new air conditioner can enhance comfort, reduce your carbon footprint, and save you money every time it kicks on.

If you’re ready to explore your options, G.F. Bowman is here to help. Specializing in everything from AC installation to maintenance, our team of trusted AC technicians in Harrisburg, PA will walk you through all your choices so you get the perfect system for your home. Call or schedule service online today to book your consultation and find the best AC unit for your lifestyle and budget!