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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon70
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Saint Clair - Updated Nov 2026

Avatar for Doctor Ducts, LLC
Doctor Ducts, LLC
5.0(
75
)
Air Ducts & Vents - Clean

Serving Saint Clair, MI and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

"Clean Air Ducts and Vents - Doctor Ducts was great to work with. Excellent customer service and very detailed in explaining what was being done with my furnace and air ducts. They took pictures of what my vents looked like before/after. I would recommend them and will use their services again."
Response time2 hrs
Response rate98%
1 neighbors recently requested a quote
Avatar for EMH Mechanical LLC
EMH Mechanical LLC
5.0(
8
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install - For Business+7 more

Serving Saint Clair, MI and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"EMH Mechanical is my Only HVAC company, I have used there services for over 6 years now, compared to the past companies I have used, No other Company compares, From my Primary Home, to My rental properties and my Automotive Repair Shop Commercial Building and one other Commercial property I own, on time Always, projects finished on time as stated, no disappointments whatsoever, do not sleep on this company, they are the best in the business from residential, commercial and industrial, best prices also, Thank you Ethan to you and your staff, I can never say how much you guys are appreciated."
Shop HVAC Upgrade
Shop HVAC Upgrade
Office HVAC Upgrade
Florida Room HVAC
Master Bedroom HVAC

+9

Response time1 day
8 neighbors recently requested a quote
Efficient heating and cooling
5.0(
2
)
Geothermal Heating or Cooling System - Service

Serving Saint Clair, MI and surrounding areas

Approved

13 years experience, we install furnaces, a/c systems and ductless systems. 10 yr warranties on all equipment. We also offer a/c tune ups which consist of cleaning outdoor condenser and all checking refrigerant charge on your system. We also offer a complimentary air filter change with this service. Don't wait until its hot to make sure your system will operate properly.

Upper bedroom
Clean
Finished
Cassette
Cracked heat exchager

+3

A & C Heating & Cooling, LLC
3.5(
2
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - Repair

Serving Saint Clair, MI and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"We were very impressed with A & C Heating and Cooling. Their online scheduling tool was convenient, user friendly, and there was a variety of time slots available. The appointment follow up, reminders and arrival tracking map were timely and helpful. Our technician, McKinley, was amazing!!! He was very courteous, knowledgeable and efficient. He diagnosed the problem quickly, installed the needed part, and ran tests to ensure the unit was running at peak performance. He educated us about our unit by explaining how it operates, what caused the problem, and how the replacement part would remedy the problem. We are VERY satisfied with their service. We give this company and our technician our highest rating, and we would highly recommend them to anyone in need of quality heating and cooling installation or service. ."
Response time3 hrs
Response rate100%
Recommended by100%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

To extend your HVAC system’s lifespan, it’s crucial to keep up with maintenance. This includes changing filters and thermostat batteries, keeping the outside unit clean and clear of clutter, and lubricating moving parts. Watch out for leaks, mold buildup, and blockages to ensure your unit stays in good working order. Spotting these issues early can be the difference between a simple, wallet-friendly repair and an expensive replacement.

When your HVAC technician mentions recharging your home AC unit, they’re referring to the process of topping off the unit with refrigerant, so the levels are properly maintained and pressurized. Normally, a properly functioning AC unit doesn’t need additional refrigerant, but AC units can develop leaks or other problems that decrease the amount of refrigerant needed.

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

If your AC runs constantly, it could be due to a number of things, including a faulty thermostat, incorrect temperature settings, or broken equipment. Alternatively, you might have an airflow problem (for example, blocked vents or leaky ductwork). Either way, an HVAC pro can identify the specific problem and fix it for you.

A frozen coil can cause permanent damage to your HVAC system and lead to costly repairs if not fixed. It can cause the unit to overheat and also cause the compressor to fail. It’s vital to turn the unit off if the coil is frozen and address the issue as soon as possible. 

The Saint Clair, MI homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.