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Best heating and air conditioning pros near Darien, CT

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TRUSTED BY DARIEN, CT HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon253
    Verified heating and air conditioning services reviews

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

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 Darien, CT and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Donny and his team are the best, They installed a new HVAC system for us in the Fall and made some updates to our other systems. When we needed help with a fan noise issue they came out quickly and fixed the issue with really creative and innovative ways of problem solving. Incredible."
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 Darien, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

Experience the power of clean and healthy air with AC Air Duct Cleaning! We are the premier provider of specialized cleaning services for dryer vents, air ducts , and chimney sweep. With years of industry expertise, we take pride in being a family-owned business that stands out from the competition. Our dedicated team is driven by a passion for customer satisfaction and goes above and beyond to ensure every job is completed to the highest standards. When you choose AB Air Duct Cleaning, you're choosing excellence, reliability, and a breath of fresh air like never before.\n\nContact us now to schedule your appointment! \nwww.acairduct.com

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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(
430
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+12 more

Serving Darien, CT and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"Great experience Justin, Nate & Timothy were awesome. Very knowledgeable, professional & curious. Aside from the cleanliness they delivered an experience. I highly recommend HL bowman if you want rapid service on your HVAC. Pricing was reasonable in my opinion & financing is an option. Keep in mind when seeking quotes for your HVAC repair/ new install you must consider performance over equipment, that is if your want a good system that will have a good run/life span."
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+6

467 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Petro Home Services
Petro Home Services
4.4(
1,786
)
Central A/C - InstallOil Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Darien, CT and surrounding areas

Approved (Corporate)

In business since 1903

Emergency services offered

Warranties offered

With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

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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(
44
)
Air Ducts & Vents - Clean

Serving Darien, 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 - RepairGas Boiler or Radiator Heating System - Repair+2 more

Serving Darien, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"I hired the The HVAC services and I am happy with the results. The technician was punctual, arriving right on time which I really appreciate. He was professional and clearly articulated explaining the issues of the repair process in a way I could easily understand. His work ethic was top-notch. He was thorough careful and made sure everything was done right the first time. It was a great experience and I highly recommend this team for their solid five star performance"
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
6 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Green Air Duct Services
Green Air Duct Services
4.6(
116
)
Air Ducts & Vents - Clean

Serving Darien, CT and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

We are a locally owned and operated company, with over a decade of experience. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients, and guarantee your satisfaction.

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+29

Response time5 hrs
Response rate96%
Recommended by89%of homeowners
Fairfield County Heating and Cooling
4.4(
187
)
Central A/C - InstallHeat Pump - Install or ReplaceHeat Pump - Install or Replace - For Business

Serving Darien, CT and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Absolutely top notch work AND customer service. I've hired Mike and his crew for three large jobs now (two HVAC units and one tankless water heater) and have been very happy with Mike's responsiveness and the quality and overall value of his work."
Navien gas boiler
Response time1 day
3 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Kelley's Heating & Cooling, LLC
Kelley's Heating & Cooling, LLC
4.9(
11
)
Central A/C - InstallHeat Pump - Install or ReplaceDuctless Mini-split A/C - Install or Replace+23 more

Serving Darien, CT and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. \n \n \n

Response time1 day
13 neighbors recently requested a quote
Recommended by72%of homeowners
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Showing 1-10 of 522
Heating and Air Conditioning FAQs, answered by experts

No, it isn’t necessarily bad to turn your AC on and off frequently—contrary to popular belief. Even if you stop and start your AC throughout the day, it won’t use as much energy as it would if you ran it nonstop. 

If you’re concerned about your power consumption and energy costs, there are a few simple ways to use your AC more efficiently. Regularly cleaning the filters, scheduling routine maintenance, and using a programmable thermostat are all great choices.

Yes, a dehumidifier and air conditioner can be used simultaneously in a home. A dehumidifier can bolster an air conditioner’s efficiency. Typically, a dehumidifier is used when the air conditioner alone cannot keep a home’s humidity levels at a comfortable indoor humidity level, which should, ideally, be between 30% and 50%.

Some HVAC systems tend to use R410A refrigerant, although if you have an older model it may be using R22. R22 is banned due to its harmful environmental and health impacts, and it is a sign that your AC unit is old enough to consider a replacement and the significant efficiency gains that could come with it.

A window AC unit is not completely silent. You’ll hear the sound of air blowing, and if you put your ear right up next to the unit, you may hear a slight hiss or gurgle as the refrigerant flows through the system. That said, if your system is making a running water sound, a loud banging sound, a grinding sound, or physically vibrating, you may be facing an issue or malfunction with your AC unit.

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 Darien, 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.