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Best heating and air conditioning pros near Greenwich, CT

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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon459
    Verified heating and air conditioning services reviews

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

Avatar for Royal Comfort
Royal Comfort
5.0(
18
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+45 more

Serving Greenwich, CT and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"These guys are great. They came to assess the situation (problems with our oil furnace) and thoroughly reviewed options. We went with them for a furnace replacement, as well as a heat pump to replace our standard a/c units. They came in much cheaper than the two other companies we consulted (one of which we had used for almost 50 years (since the house was new). We're thoroughly happy with our new HVAC setup, and even the fancy Nest thermostat. Highly recommended!"
The new Bryant 16 SEER2 Unit
Look at all those Mitsubishis!
The new boiler & tank to keep these folks warm for many years to come!
The old broken unit
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+5

Response time3 days
7 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Tyler Heating, Air Conditioning and Refrigeration LLC
Tyler Heating, Air Conditioning and Refrigeration LLC
4.6(
132
)
Central A/C - InstallCentral A/C - Service or RepairElectric Furnace / Forced Air Heating System - Install+47 more

Serving Greenwich, CT and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Have gotten to know Tyler AC over the past few years when our previous HVAC guy retired. Techs Chris & Jeff have been knowledgeable and responsible keeping our aging system running. Jen & Cinda in the office have always been super helpful. Jeff spent time here last summer milking along our AC system in very HOT weather. We spent time a few months back with a technician deciding what our needs were when repairs to our heating system were mounting. The office helped us figure out the best way to move forward, hooked us up with a home energy audit in order to qualify for rebates, etc. We chose our new system, they ordered it and the installation date was set. They said it would take 2-3 days to compete the install. As of today, it is done. 2 1/2 days. Hot, humid, heat wave days and the 2 guys worked hard. We are presently enjoying our nice cool home while watching Lord of the Rings - The Fellowship of the Rings."
Carrier Ductless Heat Pump Condenser
Carrier Performance Ductless Heat Pump High Wall Air Handler
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+172

Response time2 days
Response rate100%
3 neighbors recently requested a quote
Avatar for AC Air Duct Cleaning
AC Air Duct Cleaning
5.0(
30
)
Air Ducts & Vents - Clean

Serving Greenwich, 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%
1 neighbors recently requested a quote
Avatar for H L Bowman
H L Bowman
4.6(
429
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+12 more

Serving Greenwich, CT and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"The appointment was made within 2 days of contacting them. The technician (Brian) was punctual for a 7:30 am appointment. Once there, Brian did a fantastic job of communicating the services that he was performing and kept me very informed about the status of the AC system. He found some issues that had been previously overlooked by former HVAC technicians and provided me with a very detailed understanding of what the outlook for my unit should be in the future. I noticed an immediate improvement in the cooling of the house as well as the air quality. I can't thank this company and this technician enough for being so professional in the way they conduct their business. I would recommend them to anyone in need of HVAC service."
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+6

484 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Greenwich, 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 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 Greenwich, 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
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Heating and Air Conditioning FAQs, answered by experts

Assessing location for airflow, convenience, and minimal noise impact.

You will enjoy greater energy efficiency and save on your annual energy bills, with new, modern HVAC systems using 30% to 50% less energy than older models. Upgrading your HVAC system is also a great way to embrace new technology, such as smart thermostats, lighting, fan speed, and humidity from your phone or tablet.

While all portable AC units will collect moisture as part of their cooling and dehumidifying process, whether and how often you need to drain them depends on what kind of unit you have and the natural humidity levels where you live. For example, if you live in a very dry area and have a self-evaporating unit, you may not need to drain your portable AC very often at all. Some units may automatically drain collected moisture out the window through their exhaust vent.

Yes, it’s best to turn off an AC unit that’s blowing hot air to prevent system damage and avoid expensive energy bills. If you let the AC continue running, it will put more strain on the condenser coil and compressor. Plus, if the AC is blowing hot air because of a refrigerant leak, it can also lead to a frozen evaporator coil.

There are plenty of different not-so-great sounds to hear from your air conditioning unit, like squealing, grinding, water running, excessive gurgling, banging, and clanking. Each of these sounds can indicate a different malfunction with your unit, so it’s important to have a professional assess the problem before it gets worse.

The Greenwich, 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.