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TRUSTED BY STAMFORD, CT HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon374
    Verified heating and air conditioning services reviews

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

Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Stamford, CT and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Decided to give MSD a call as I had another company over the house today to fix my AC and they were not able to repair it as they needed to order parts. Mehmet answered the phone and couldn't have been more professional/helpful. He spent 10 or so mins on the phone with me trying to understand the problem and give me advice. He unfortunately couldn't send some one out as he was super jammed with the current heat wave. I will not hesitate to call Mehmet again as he is a true professional and very knowledgeable."
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+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for AC Air Duct Cleaning
AC Air Duct Cleaning
5.0(
30
)
Air Ducts & Vents - Clean

Serving Stamford, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"The assigned technician, John, was on-time, knowledgeable, provided suggestions, and thorough. Oftentimes, people don’t realize how important this service is. If I were you, I would book AC Air Duct cleaning!"
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+29

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Petro Home Services
Petro Home Services
4.4(
1,600
)
Central A/C - InstallOil Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Stamford, CT and surrounding areas

Approved (Corporate)

In business since 1903

Emergency services offered

Warranties offered

"There was a snag at the beginning when they realized, after beginning to dig, that the AC unit was on top of the oil tank and they'd have to call someone in to move it before digging could continue. That delayed things a few days, but thereafter they did a good job of digging and were very careful with our trees. They also took care not to ruin the lawn with the machinery. The new tank and heater were quickly put in the basement with no problems."
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Response time6 days
Response rate100%
18 neighbors recently requested a quote
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Stamford, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I wanted to clean a second floor dryer vent hose that was loaded solid with lint. It was worse than I thought! Packed solid! It became evident that this was a messy and dangerous situation as it was a fire hazard. Through Angi I found Everclean and the co. was a perfect fit. HVAC companies don’t do dryer vents. Justin from Everclean was awesome and got the problem straightened out. He even discovered the dryer vent had become disconnected from outside dryer vent door! I can’t fit through the narrow attic hatchway as my shoulders are a bit too wide, so I depended on Justin. Finally, everything is buttoned up, and our clothes now dry in half the time. Cost was moderate and was money well invested. Dryer vent fire danger is now negligible compared to before. Along with neighbor hatred danger. I would hire Everclean again if needed again."
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+2

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Y & M Airduct Service
Y & M Airduct Service
4.9(
143
)
Air Ducts & Vents - Clean

Serving Stamford, CT and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Matt and Harvey were professional and very clean. Two of our neighbors hired them to clean their HVAC ducts and dryer vents. We will have them back and refer to our family and friends."
Airduct
Airduct
Airduct
Airduct
Response time8 hrs
90 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for WTECH22, LLC
WTECH22, LLC
5.0(
11
)
Gas Furnace / Forced Air Heating System - RepairOil Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service+2 more

Serving Stamford, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"My AC cut out in 90 degree heat the same day we were expecting 4 guests for several days. I called about 9-10 other places before having the good fortune to find Wilson. None of theme could come same day for my emergency, most not for almost a week. Wilson saved my skin. He was johnny on the spot, arriving within 2 hours, got the job done fast, and was very likeable to boot. He's my HVAC guy from now on, and I strongly recommend you try him too."
Installation of Furnace
Furnace Installation Norwalk CT
Southport CT Installation of a Forced Air Furnace
Ductwork Installation in Westport CT
Furnace Installation in Fairfield CT

+2

Response time1 day
5 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Repair+47 more

Serving Stamford, CT and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I was very happy with my service call today! The repairman, Scott, was knowledgeable and pleasant and wore a mask and gloves throughout., so I felt safe, despite the pandemic. He serviced both of my central air systems and diagnosed the problem with the malfunctioning one and fixed it. By the time he left my house was already a much more pleasant place to be!"
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Green Air Duct Services
Green Air Duct Services
4.6(
116
)
Air Ducts & Vents - Clean

Serving Stamford, CT and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"This is one business that knows what service is about, and sharing with the customer the service to be done and sticking to the quote. AVI is personable and really knows that a job well done is worth doing. Hard working, thorough and methodical, these are the elements I want when hiring outside expertise and AVI delivered. I liked this service and I liked AVI like a true relative. Our lives are changed thanks to their dedication and craft. I would give them 10 stars if I could. My family has been fighting allergies since we moved in, 20 years! These professionals came early and took their time. They found one of my ducts filled with lots of trash that was pushed in during a recent renovation to our bedroom, they fixed it. I had insulation in my exchange area-they removed it. They cleaned and disinfected all of my ducts, cleaned my furnace and dryer vent. When they left you could not tell they had even been there. They will be the only ones I will use in the future!"
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+29

Response time5 hrs
Response rate96%
Recommended by89%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

It is possible to add air conditioning to an older home, but it can be very expensive to do so. Expect to pay anywhere from $6,000 to $17,000 or more for the ductwork and AC unit. You’ll also have to hack into the home’s walls and ceilings to add ductwork, which can impact the aesthetics of an old home.

If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances. 

Professional duct installers suggest leaving between six and 12 inches of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.

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.

The Stamford, 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.