Is it time for a new air conditioner?

When summer temperatures and humidity arrive in Michigan, you need an air conditioner that’s ready to perform to your expectations. If your current central air system isn’t up to the task, it’s time to upgrade. 911 Mechanical installs advanced, affordable, energy-efficient, and high-performance air conditioners and cooling systems for both homes and businesses.

Our comfort designers will tailor your needs to the perfect-sized system for your home or business. We are committed to giving our customers the air conditioning solution that is right for them at fair prices.

So What Does the SEER Rating of an AC system Mean?

SEER stands for "Seasonal Energy Efficiency Ratio," and it is a measure of the cooling output of an air conditioning system over a typical cooling season, divided by the amount of energy consumed in watt-hours season.

Variable-Capacity AC Compressor

The Variable-capacity compressor, also called Variable Speed, is currently our most efficient and quietest option. It can operate at various speeds depending on the cooling requirements, ranging from 35-100%. Compared to two-stage systems, it offers a wider range of speeds, enabling the air conditioning to maintain lower speeds for longer durations while providing the option for higher speeds when the outdoor temperature rises. As a result, variable-speed AC systems run continuously without frequent on/off cycles and only at the required speed to keep you comfortable, making them the most energy-efficient among the three types of AC systems.

Two-Stage / Multi-Stage AC Compressor

The two-stage AC compressor operates at two levels: high for extremely hot summer days and low for milder summer days. With a two-stage AC unit, you essentially get two units for the price of one. On days with moderate temperatures, the compressor initially runs at 70%, and if it fails to cool the house to the desired level, it moves to 100%. Since the low setting is adequate for cooling homes 80% of the time, a two-stage unit operates for more extended periods, resulting in a more uniform indoor air temperature. Compared to a single-stage compressor, the two-stage compressor is more efficient because it doesn't cycle on and off as frequently, reducing wear and tear. Moreover, the two-stage system removes twice as much humidity as the single-stage system because it operates at the lower level for an extended period.

Single-Stage AC Compressor

A single-stage AC compressor functions at a constant full-cold speed, with the thermostat controlling the home's temperature by turning the AC system and compressor on and off. In Michigan, most homes with central air conditioning use a single-stage compressor, which has been the standard for several decades. The latest single-stage models feature cutting-edge technology, making them considerably more energy-efficient than their older counterparts, which had much lower SEER ratings.

Customized Heating Solutions

911 Mechanical Heating and Cooling offers customized home comfort solutions that take into account factors such as home size, design, climate, insulation, and occupants' behavior to find the most affordable and energy-efficient option. They only recommend products that meet their strict criteria and provide detailed explanations, recommendations, and load calculations to ensure equipment is correctly sized for the home. Their goal is to provide quality customer service and build lasting relationships with customers.

The amended Energy Efficient Home Improvement Credit, which began in 2023 and extends through 2032, increases the tax credits as high as $600 for qualified air conditioners or gas furnaces, and boilers and up to $2000 for qualified heat pumps.

Our Most Popular Lennox Air Conditioners

Dave Lennox Signature Collection - Model SL28XCV

The Most Precise and Efficient Air Conditioner Available
Stages of Cooling: Variable-Capacity Operation
Up to 28 SEER
SEER2 Up to 25.8
ENERGY STAR®
Sound Level As low as 59 dBA
Cabinet PermaGuard Cabinet and SmartHinge Louver Design
R-410A refrigerant
Tax Credit Eligible
iComfort-enabled technology
10-Year Limited Warranty on compressor and covered components

Lennox Elite Series - Model EL23XCV

High-efficiency, Digitally-Enabled, Variable-capacity Air Conditioner
Up to 18 SEER
SEER2 up to 18.8
Stages of Cooling Variable-Capacity Operation
ENERGY STAR®
Sound Level As low as 72 dBA
PermaGuard Cabinet and SmartHinge Louver Design
R-410A refrigerant
Tax Credit Eligible
iComfort-enabled technology
Elite models come with a 10-year Limited Warranty on compressors and a 10-year Limited Warranty on covered components with product registration

Lennox Merit Series - MODEL ML18XC2

High-efficiency, Two-Stage Air Conditioner
18.00 SEER and 17.8 SEER2
Stages of Cooling Two-Stage Operation
ENERGY STAR®
Sound Level As low as 75 dBA
PermaGuard Cabinet
R-410A refrigerant
On-board Diagnostics
10-Year Limited Warranty on covered components including compressor with product registration

Lennox Elite Series MODEL EL16XC1

High-efficiency Air Conditioner
17 SEER
Stages of Cooling Single Stage
ENERGY STAR®
Sound Level As low as 71 dBA
PermaGuard Cabinet and SmartHinge Louver Design
R-410A refrigerant
Elite models come with a 10-year Limited Warranty on compressors and a 10-year Limited Warranty on covered components with product registration

Request Quote

Our Most Popular Carrier Air Conditioners

Carrier Infinity® 26 Air Conditioner 24VNA6

with Greenspeed® Intelligence
Stages of Cooling: Variable-Speed
Up to 24 SEER2
SEER2 Up to 25.8
ENERGY STAR®
Sound Level As low as 51 dBA
Silencer System II Design with Compressor Sound Blanket
Tax Credit Eligible
10-year parts† 10-year unit replacement (24VNA6 compressor failure only)

Carrier Performance™ 16 Central Air Conditioner 24ACC6

Stages of Cooling: Single Stage
Up to 17 SEER
Sound Level As low as 72 dBA
Compressor Sound Blanket
10-year parts†

When it comes to getting the best heating and cooling equipment or service, the only name you need to know is 911 Mechanical.

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