Is It Time for a New Air Conditioner?

When Michigan’s summer heat and humidity arrive, you need an air conditioner that delivers reliable performance. If your current system struggles to keep your home cool, it may be time for an upgrade.

At 911 Mechanical, we install high-performance, energy-efficient cooling systems for both homes and businesses. Our expert team ensures you get the right-sized system for maximum comfort and long-term savings.

Choosing the Right AC System

Finding the right air conditioner comes down to balancing comfort, efficiency, and cost. Whether you're looking for a simple, reliable cooling solution or top-tier performance, there’s an option that fits your needs.

Single-Stage Air Conditioners

Single-stage air conditioners are the most common choice for a reason—they’re simple, dependable, and get the job done. When your home needs cooling, they kick on at full power and shut off once the temperature is reached. With the lowest upfront cost, they’re an affordable option for keeping cool without breaking the bank. Plus, newer models are much more efficient than older ones, making them a smart purchase.

Two-Stage Air Conditioners

Two-stage air conditioners offer a great mix of performance and efficiency. They mostly run at a lower setting to save energy but have extra power when needed on hotter days. This helps keep temperatures more consistent while using less electricity than older models. They cost more initially, but the improved efficiency pays off over time.

Variable-Capacity Air Conditioners

Variable-capacity air conditioners are the gold standard in efficiency and comfort. They constantly adjust to maintain the perfect temperature without the constant on-and-off cycles of traditional systems. That means quieter operation, better humidity control, and lower energy bills. While they have a higher upfront price, the long-term savings can make up for it.

Understanding SEER2 Ratings

If you’re shopping for a new air conditioner, you’ll see a SEER2 rating on all modern units. SEER2 (Seasonal Energy Efficiency Ratio 2) measures how efficiently an AC system cools your home—using less energy to do the same job.

A higher SEER2 means greater energy efficiency and lower electricity bills.
It does not mean the system cools your home better or faster—all AC units are designed to reach the temperature set on your thermostat.
New models range from 14 SEER2 to over 20 SEER2, meaning today’s air conditioners use significantly less energy than older systems.

SEER2 replaced the old SEER system in 2023, offering a more realistic measurement of efficiency based on real-world conditions. If you’re upgrading, focus on SEER2—the higher the number, the more you save on energy costs.

What About the New R-454B Refrigerant?

Starting in 2025, all new air conditioners will use R-454B refrigerant instead of R-410A due to updated environmental regulations.

More Eco-Friendly – Lower global warming potential (GWP) than R-410A.
More Efficient – Designed to work with high-SEER2 systems for better performance.
Not Backward-Compatible – Older R-410A systems cannot be converted to R-454B.

At 911 Mechanical, we stay ahead of these changes so you don’t have to worry about navigating them alone. Whether you need a new system or just have questions, we’re here to help.

Custom Heating and Cooling Solutions

At 911 Mechanical, we take a customized approach to home comfort. Our team evaluates multiple factors to recommend the best system for your needs, including:

Home size, insulation, and climate conditions.
Energy efficiency goals and budget.
Load calculations to ensure proper system sizing and performance.

We prioritize long-term reliability, energy savings, and expert installation to deliver the best possible cooling solutions.

Energy Tax Credits for Air Conditioners

The Energy Efficient Home Improvement Credit, in effect from 2023 to 2032, offers tax incentives for homeowners upgrading to energy-efficient systems:

Up to $600 for eligible air conditioners, furnaces, and boilers.
Up to $2,000 for qualifying heat pumps.

Upgrading your system improves energy efficiency and may qualify you for these valuable tax credits.

Upgrade Your Comfort Today

Do not wait until the summer heat exposes your AC system’s weaknesses. Contact 911 Mechanical today for expert advice and a free consultation on the best cooling solution for your home or business.

Our Most Popular Lennox Air Conditioners

Dave Lennox Signature Collection - Model SL25KCV

The Most Precise and Efficient Air Conditioner Available

Stages of Cooling: Variable-Capacity Operation
Up to 26 SEER
SEER2 Up to 25.2
ENERGY STAR®
Sound Level As low as 58 dBA
Most innovative cabinet design with composite unit base and top and easily removable louver panel
R-454B refrigerant
Tax Credit Eligible
iComfort-enabled technology
10-Year Limited Warranty on compressor and covered components.

Lennox Elite Series - Model EL22KCV

High-efficiency, digital-ready, variable-capacity air conditioner

Up to 22 SEER
SEER2 up to 22.5
Stages of Cooling: Variable-Capacity Operation
ENERGY STAR®
Sound Level As low as 60 dBA
Innovative cabinet design with composite unit base and top and easily removable louver panel
2025 Compliant Refrigerant R-454B
Tax Credit Eligible
Elite models come with a 10-year Limited Warranty on compressors and a 10-year Limited Warranty on covered components with product registration.

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Lennox Elite Series - MODEL EL18KCV

Mid-efficiency, digital-ready, variable-capacity air conditioner

18.00 SEER and 19.5 SEER2
Stages of Cooling: Two-Stage Operation
ENERGY STAR®
Sound Level As low as 67 dBA
Galvanized steel cabinet with hinged louver panel design
2025 Compliant Refrigerant R-454B
On-board Diagnostics
10-Year Limited Warranty on covered components including compressor with product registration.

Lennox Elite Series MODEL EL15KC1

Mid-efficiency, single-stage air conditioner

17 SEER
Stages of Cooling: Single Stage
ENERGY STAR®
Sound Level As low as 72 dBA
PermaGuard Cabinet and SmartHinge Louver Design
2025 Compliant Refrigerant R-454B
Elite models come with a 10-year Limited Warranty on compressors and a 10-year Limited Warranty on covered components with product registration.

Contact Us for a Free In-Home Estimate For a New Home Comfort System