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Best heating and air conditioning pros near South Windham, CT

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TRUSTED BY SOUTH WINDHAM, CT HOMEOWNERS

  • Average homeowner rating star icon4.1
    Average homeowner rating
  • Verified reviews icon34
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in South Windham - Updated Nov 2026

Avatar for Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
4.3(
15
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving South Windham, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Went very well, considering I needed my furnance fixed on a Sunday. I was able to call up at 7am and the tech was out to my house later that morning. Juan did a great job, fixed the problem and explained to me what he did. I would hire this company and ask for Juan if you have any HVAC needs."
Response time2 days
2 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for ALLSTAR DUCT SOLUTIONS, INC.
ALLSTAR DUCT SOLUTIONS, INC.
4.8(
51
)
Air Ducts & Vents - Clean

Serving South Windham, CT and surrounding areas

Approved

In business since 2020

Free estimates

Offers commercial services

"I was contacted right away and they were at the house within an hour of my returning their call. They knew exactly what to do, had all the right equipment and were very knowledgeable about duct cleaning. The job was diagnosed, and completed in 30 minutes which included leaving the work site neat and clean. Great job!"
Radon Mitigation
Radon Mitigation
Radon Mitigation
Radon Mitigation
Foundation Sealing

+49

26 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for 888-I-DO-DIRT
888-I-DO-DIRT
4.5(
381
)
Air Ducts & Vents - Clean

Serving South Windham, CT and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"Excellent experience. Arrived when he said he would, quickly assessed the problems, did a quality job with both dryer vent repairs and a thorough cleaning. He did all that at a very fair price. Highly recommend him for HVAC and dryer vent cleaning and repairs."
Sample Cleanings
Sample Cleanings
Sample Cleanings
Sample Cleanings
Sample Cleanings

+11

Response time4 hrs
5 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Atlantic Water Heater Pros
Atlantic Water Heater Pros
4.8(
51
)
Gas Boiler or Radiator Heating System - Install

Serving South Windham, CT and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"I highered Bruce and his team, we're very happy with the service. They installed a couple new baseboard heaters to our existing unit to add more heat to a few rooms that's were cooler than we liked. We're very happy and much warmer. Bruce and his team were responsive and open to everything they were doing. Fast and efficient highly recommended!"
Large Mechanical Room
Response time1 day
Recommended by92%of homeowners
Avatar for Pro Services
Pro Services
4.8(
151
)
Air Ducts & Vents - Clean

Serving South Windham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"The technician, Steve, called me 25 minutes prior to his arrival. He was extremely knowledgeable about my gas fireplace. He vacuumed all areas. He informed me of the condition of the components. I was prepared to ask him a handful of questions that he was able to answer. My fireplace works very well and I strongly recommend using the Chimney Experts."
Chimney Cap Installation
Smoke chamber before
Chimney Sweep Project
Fireplaces Project
Chimney Sweep Project

+36

Response time4 days
Response rate100%
47 neighbors recently requested a quote
Avatar for Agile Construction and Home Improvement
Agile Construction and Home Improvement
4.8(
80
)
Thermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving South Windham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"Rafael was great - he fixed our front door knob and lock, replaced another door handle, and our towel bar. He worked us into his busy schedule and came by on a day that was best for me. Rafael picked up parts he needed at Home Depot after assessing what we needed, and efficiently completed all three jobs."
Entry porch
House flip
House flip
House flip
House flip

+232

Response time4 days
Recommended by52%of homeowners
Avatar for Quiet Corners Mechanical Services, LLC
Quiet Corners Mechanical Services, LLC
3.4(
35
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+24 more

Serving South Windham, CT and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"We received professional and detail-oriented service during our complete HVAC installation. I couldn't have been more pleased with the quality of work and price! There was a mix up with the new furnace and the owner rectified it without question. While they were here, I received a quote for connecting a stand-by generator for propane, and the owner noticed what I have been extremely nervous about for several years, which a well-known company that is in Salem and rhymes with Slicer had installed new gas piping in our basement using plastic flexible pipe and several regulators. We have been smelling propane in the basement ever since of which Slicer was not able to rectify. Thank goodness for Quiet Corners! Now all the gas piping is black iron, and there are no more regulators in the basement; hence I am no longer scared about our house blowing up! My wife also noticed that the gas burners on the stove light easily now and produce an excellent flame (she was afraid to use our stove previously). Great service all around, and prompt attention to detail. The service crews were fantastic and took great pride in their work. I can't thank them enough for the outstanding job they did at our home. We now feel safe, warm and comfortable. :-) I plan on being a loyal customer and fan of Quiet Corners for many years to come!"
Response time2 days
Recommended by80%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

An HVAC unit, like a furnace, air conditioner, or heat pump, produces warm or hot air. The air ducts serve as the passages to help heat or cool air from the HVAC unit flow through the home. Air ducts are just one part of the overall HVAC system.

You should get anywhere from three to five quotes for HVAC replacement to get an idea of the average cost of a new unit. Although this quote-collecting process can be time consuming, it allows you to compare what work is required, what type of unit you should install, and how much you should expect to pay for the service.

The standard rule for return duct sizing is that the return vent should be the same size or larger than the supply vent. This will ensure balanced airflow in your home and reduce strain on your HVAC system.

If your whole house is cold that’s one thing, but what if you only have a few rooms that are cold? First, you need to determine why this may be happening. A good place to start is to investigate the potential causes listed in this article—heat transfer, airflow, thermostat problems, humidity, and insulation. Once you’ve narrowed down the issue, you’d apply the same principles to the cold rooms as you would to the entire home.

Yes, but they don’t feel the same as an AC-cooled room. You’ll feel cool, moist air, opposite from an HVAC system that dries the air as it cools. Ventless units also have less tonnage than alternatives like ductless and central air, which means they aren’t as capable of quickly cooling large spaces or circulating cold air.

The South Windham, CT 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.