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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon77
    Verified heating and air conditioning services reviews

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

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 Watertown, 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

459 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
44
)
Air Ducts & Vents - Clean

Serving Watertown, 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%
6 neighbors recently requested a quote
Avatar for VentWorx
VentWorx
5.0(
187
)
Air Ducts & Vents - Clean

Serving Watertown, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Small jobs welcome

"I recently had Vent Worx service all the vents in my condo . The service provider was on time , very efficient, explained all the work they were doing and was extremely careful to ensure that Everything was returned to it original location . I was very pleased with this service and they also sanitized the entire unit when they completed all their work. I certainly would recommend this company for their services."
Certification
Response time5 hrs
19 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Perfect Timing Heating & Cooling
Perfect Timing Heating & Cooling
5.0(
15
)
Oil Furnace / Forced Air Heating System - InstallCentral A/C - InstallGas Furnace / Forced Air Heating System - Install+6 more

Serving Watertown, CT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I was so pleased that the air conditioner repairman, Scott, who fixed my air conditioner on short notice did an exceptional job. We cannot express enough gratitude for his work. He arrived promptly and efficiently diagnosed the issue with my air conditioner. Despite the urgency, he remained calm and composed, assuring us that he would resolve the problem. True to his word, his expertise and professionalism were evident throughout the repair process, restoring cool air to our home. Not only did he fix the problem quickly, but he also took the time to explain what went wrong and provided helpful tips to prevent future issues. I highly recommend his services to anyone in need of air conditioner repairs. We were so impressed with their services that we recommended them to our son and daughter-in-law already. The woman in the office that scheduled this appointment, Jolene, was so easy to work with during a very stressful time of the year, the weekend with an upcoming holiday just a couple days away. Grateful for her help as well!"
Gary with his fleet
Mike and his Truck
All Hands On Deck!
The Fleet
The Fleet

+1

Response time7 hrs
Response rate100%
35 neighbors recently requested a quote
Thurston Duct Cleaning and Powerwashing
4.6(
57
)
Gas Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - Install

Serving Watertown, CT and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Where do I start? "J" came by Fri at my request to ensure they could do the job and he explained everything. "J" and his crew arrived on Tue. Got straight to work. Worked quickly and neatly. Did a super, super job cleaning the ducts! This is WELL WORTH the money. I priced out others, they are comparable. I feel like I have a NEW house. The place smells so fresh and clean. Extra kudos on cleaning the registers - they scrubbed them until they were clean! I asked about next year and was told we only need it every 3 years. I will definitely use them again. They have other services too!"
Residential Cleaning
Trailer Mounted Vacuum
8" Hose Attached
Suction Applied
Air Brush Ductwork

+3

Recommended by98%of homeowners
Avatar for Connoles Electric, LLC
Connoles Electric, LLC
4.8(
82
)
Electrical Baseboard or Wall Heater - Install

Serving Watertown, CT and surrounding areas

Approved

In business since 1984

Free estimates

Credit card accepted

We at Connoles Electric, LLC, focus on quality services over quantity. We use our years of experience and expertise to complete your project with perfection. Customer service and honesty are the most important aspects of our business and your satisfaction is guaranteed. Please call us today for an estimate. We look forward to working with you.

3 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Pro Services
Pro Services
4.8(
152
)
Air Ducts & Vents - Clean

Serving Watertown, 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
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Showing 1-10 of 263
Heating and Air Conditioning FAQs, answered by experts

To keep a window air conditioner in good working order, you should clean the filter regularly, inspect the seals, and store the unit properly during the off-season.

A non-maintained AC is more likely to perform poorly, increase your energy bills, and undergo more severe issues like breakage and water damage. That’s why DIY cleaning or professional maintenance is recommended annually. Otherwise, you might end up paying more in the end than you would for annual service. You can purchase cheap AC cleaning kits if you prefer going the DIY route.

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

It’s critical to use the right size AC for your space and not go too small or too big. If you purchase an undersized unit, it won’t properly cool your house, and it has to work harder to reach the optimal temperature. This will eventually wear your unit out. An oversized unit can spell trouble because it will turn off and on more frequently, which also wears out your AC unit. An oversized unit also causes humidity in the home.

If you don't clean your AC evaporator coils, dirt and debris will build up, which impairs the system's ability to transfer heat. This forces the unit to work harder, leading to inefficient performance, higher energy bills, and frequent breakdowns. Over time, neglected coils can corrode, which may cause refrigerant leaks, or develop mold, ice buildup, and a clogged condensate drain, resulting in poor air quality and an uncomfortable home.

The Watertown, 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.