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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

The cost of R32 refrigerant is about the same as the cost of R410A refrigerant, the most widely available type of refrigerant today. However, R32 systems use about 20% less refrigerant than R410A systems, making the refrigerant less expensive overall.

You can buy a house with a 15-year-old HVAC system if you inspect the system for performance and budget for a replacement within the next three years. You can also negotiate the price with the sellers. Ask to look at the unit’s maintenance records and energy bills for the last two years to determine the shape of the HVAC system and its operating costs. Spend time in each room of the house to gauge if the HVAC keeps the home at a consistent temperature throughout.

If there’s a freon leak in your home’s AC unit, it will cause the system to work overtime to cool the house. That issue will result in higher energy bills and it will take much longer for cool air to disperse throughout the home. If your system has a freon leak during the summer, it can make hot days miserable. That’s why it’s important to hire an HVAC professional to resolve a freon leak as quickly as possible.

Winterizing can still help you save money on energy costs and help prepare your AC for its work next year when you turn it back on. We suggest planning for at least some maintenance, even if winters are mild in your area.

The length of an AC cycle depends on the settings in your thermostat and the unit you have. Central AC doesn't constantly run at full blast the way that a window unit does. A cooling cycle in most homes is 15 to 20 minutes. Then, the unit stays off for seven to 10 minutes to circulate the cold air in the house before the cycle repeats. It should repeat two or three times per hour. A short cycle lasts less than 10 minutes and then turns off.

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.