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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 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
4 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

"Bruce really listened to how I answered his questions and designed a natural-gas fueled steam boiler system that met all the requirements with the expansion potential I requested. During pre-installation logistics and the day of installation, Bruce and his crew were on-time, courteous and professional. Their work demonstrated the benefits of hiring a fully credentialed company, skilled and experienced at their craft. They completed their work in one very long day so that I could avoid a night without heat during a stretch of very cold January days. I trust Williams & Assoc. and would hire them for additional work in my home as needed"
Large Mechanical Room
Response time1 day
1 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Pro Services
Pro Services
4.8(
152
)
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
Avatar for ASL Mechanical Services LLC
ASL Mechanical Services LLC
5.0(
2
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+11 more

Serving South Windham, CT and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I highly recommend ASL Mechanical! Austin recently replaced the compressor in my AC unit after I had an extremely frustrating experience with two other companies. One company did a poor job with the wiring and was unreliable with scheduling, while another recommended replacing the entire system?even though the unit is only four years old. Austin was a breath of fresh air! His professionalism, knowledge, honesty, and fair pricing were greatly appreciated. He took the time to properly assess the situation and provide the service that was actually needed. It?s refreshing to find a company you can trust. I wouldn?t hesitate to recommend ASL Mechanical to anyone looking for quality work and dependable service!"
Gallery
Gallery
Gallery
Gallery
Condenser

+14

20 neighbors recently requested a quote
...
Showing 1-10 of 138
Heating and Air Conditioning FAQs, answered by experts

High humidity, bad insulation, warmth from sunlight, and poor circulation are all reasons your home’s hotter inside than out. While this is what you want in the colder months, summer can become unbearable if this is a constant. Try to find the cause, but you need to remember that issues like this require a permanent fix (unless you want to bear down during the summer months).

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.

In most cases, homeowners insurance will cover an AC replacement if it was damaged due to a covered peril—such as theft, fire, or storms. So, if your air conditioner needs replacing due to regular wear and tear, your insurance company probably won’t pay for a new one. However, home warranties often cover HVAC repairs and replacements.

No, it's not safe to keep using your unit when it's frozen. Not only can running a frozen unit lead to damage, but it can also potentially overheat, making it a fire hazard. Therefore, it's always best to turn off the AC unit as soon as you notice any ice.

You should only run your dehumidifier in warmer months, such as spring and summer, to get the best performance out of your system. The air gets drier when temperatures drop in the winter months, creating less of a need for a dehumidifier. However, when to run a dehumidifier will depend on your local climate.

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.