Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Williamstown, MA

Enter your zip and get matched with up to 5 pros

Need a pro for your heating and air conditioning service project in Williamstown, MA?

Select your specific project to find the pro for you.

TRUSTED BY WILLIAMSTOWN, MA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon23
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Williamstown

Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Williamstown, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Great !! Gabriel was on time and went right to work. He took pictures of duct work before and after. He supplied my wife and I N95 masks to wear during the cleaning keeping us safe. Gabriel was a true professional."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Hurley Mechanical
Hurley Mechanical
4.8(
17
)
Central A/C - InstallCentral A/C - Service or RepairElectric Furnace / Forced Air Heating System - Repair+47 more

Serving Williamstown, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Cary responded very quickly to my request and came out the next day. He was very thorough and efficient in rooting out the problem and was able to fix our a/c unit within the hour. And gave excellent pointers as well as recommendations for better energy efficient cooling/heating systems for our entire house. Will definitely go back to him in the future."
Heating & A/C Project
Water Heaters Project
Heating and Air Conditioning Project
First Floor Unit
Water Heaters Project

+25

Response time1 day
Response rate100%
9 neighbors recently requested a quote
Avatar for Walshco LLC
Walshco LLC
5.0(
19
)
Oil Boiler or Radiator Heating System - RepairOil Furnace / Forced Air Heating System - Repair

Serving Williamstown, MA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Brady and Casey are an awesome team. They came a long distance when the locals couldn't or wouldn't. They're friendly, extremely knowledgeable and if they were closer, they would be our regular furnace experts!"
roth 275
roth 275
Roth 160 Gallon Tank
Response time9 hrs
Response rate100%
44 neighbors recently requested a quote
Avatar for Pro Services
Pro Services
4.9(
143
)
Air Ducts & Vents - Clean

Serving Williamstown, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"We needed chimney sweep & minor repairs. Scheduling was easy and the guys who showed up were on time and very professional. Work was done well and we’re very happy, will be calling them for all future work on our chimney and HVAC."
Chimney Cap Installation
Smoke chamber before
Chimney Sweep Project
Fireplaces Project
Chimney Sweep Project

+36

Response time4 days
Response rate100%
29 neighbors recently requested a quote
Avatar for Catamount Response
Catamount Response
5.0(
12
)
Air Ducts & Vents - Clean

Serving Williamstown, MA and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"We have renters staying in a house we list on airbnb. We were hearing mounting complaints from them - the lower level is smelly... it's getting worse... it's damp... the dehumidifier isn't working... someone is allergic and having symptoms. I called for help after business hours and heard back quickly from Dan directly. I sent in the professionals! They evaluated the situation and told us what we hoped (and suspected) - there is no mold/mildew problem! Dan from Catamount offered to leave a powerful dehumidifier there for a week anyway, if we wanted, but although I would have paid him for that, he didn't even recommend it - because it was unnecessary! This is clearly a scrupulous company that will not charge you for work unless you really need it. While I'm glad we don't have a problem, I actually regret that I can't hire him for something. I wish every provider was like this."
1 neighbors recently requested a quote
Recommended by100%of homeowners
Oak and ivory cleaning co
New to Angi
Air Ducts & Vents - Clean

Serving Williamstown, MA and surrounding areas

Approved

Hi! I’m Shelbea, the owner of Oak & Ivory Cleaning Co. 🤍✨\n\nI started my cleaning business with one simple goal: to help make life a little easier by giving my clients a clean, comfortable, and welcoming space to come home to. I take pride in being dependable, detail-oriented, and treating every home as if it were my own.\n\nWhether you need a routine cleaning, deep clean, move-in/move-out service, or just some extra help getting your space back in order, I’d love the opportunity to help! 🧹🫧\n\nThank you for supporting my small business — I can’t wait to make your space shine! 🤍

2 neighbors recently requested a quote
...
Showing 1-10 of 88
Heating and Air Conditioning questions, answered by experts

Signs that your air conditioner capacitor is bad or failing include a range of symptoms. The AC unit may not turn on at all, or it might struggle to start before shutting down randomly or in the middle of a cooling cycle. You might hear a humming or banging noise when it attempts to start, or the compressor might hum without the unit actually running. Other indicators include a smell or smoke coming from the unit, the blower circulating room-temperature air instead of cold air, and an unexpected increase in your energy bills.

The time it takes for an air conditioner to dry fully after cleaning depends on the unit's size and humidity levels. Most units will dry within two to four hours after cleaning, but check the manufacturer's recommendations for drying times. Make sure to leave the unit off until it's completely dry.

There are several AC unit problems to troubleshoot, but luckily you can identify them by keeping a close eye on your system. Look out for the following signs that your AC needs repair:

  • Unusual noises during operation

  • AC unit blows warm air

  • AC unit doesn’t come on or turn off with temperature changes

  • Strange odors come through the vents

  • AC unit cycles on and off rapidly

  • Indoor air is more humid or less comfortable than usual

  • AC unit keeps tripping your breaker

  • Fan in the outdoor compressor doesn’t operate when the AC is on

The standard rule for return duct sizing is that the return vent should be the same size or larger than the supply vent. This will ensure balanced airflow in your home and reduce strain on your HVAC system.

Absolutely! You can seriously improve the overall value of your home by maintaining high-quality, compatible systems for heating and cooling. Potential buyers will love not having to worry about getting a new HVAC unit for 15 to 20 years and will pay more for it. For maximum efficiency and cost savings, replacing the furnace and air conditioner at the same time, when possible, gives you (and potential future buyers) reliable comfort and modern convenience.

The Williamstown, MA 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.