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Top-Rated Air conditioning pros in Williamstown - Updated Nov 2026

Avatar for Lone Wolf Energy, LLC
Lone Wolf Energy, LLC
5.0(
9
)
Window A/C Unit - Service or Relocate

Serving Williamstown, VT and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Shawn was a professional from start to finish. He was transparent about his pricing, communicated clearly, and finished the work in a timely manner. My heat pumps efficiently heat and cool my house, and I recently contacted him to install another in my work office. I would highly recommend Shawn for all your heating, cooling, and maintenance needs."
Mitsubishi Outdoor Units
Bosch outdoor unit
Bosch heat pump coil
Response time5 hrs
6 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Night & Day Cleaning VT
Night & Day Cleaning VT
5.0(
1
)
Air Ducts & Vents - Clean

Serving Williamstown, VT and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Offers commercial services

Hello! My name is Susannah, and I am a 25 year old business owner with 4 years of hands-on cleaning experience and 1 year successfully working for myself and running my own business!\nI bring all my own products, natural and conventional as well as other supplies, including vacuum, mop, steam mop, electric scrubber, rags, \nI'm passionate about helping homes feel fresh, organized, and stress-free!\n•I provide all cleaning supplies and products, including natural, conventional, and scent-free\n• Other supplies includes vacuum, mop, steam mop, swiffer, dusters, electric scrubbers, ladder, rags, trash bags, etc!\n•Regular, deep, commercial, and one-time cleans available\n•Reliable, thorough, and detail-oriented!\n•Friendly service with flexible scheduling\n•Pet, disability and children friendly💜\nWhether you need weekly maintenance, a deep clean, or help getting back on top of things, I'd love to help make your space sparkle with a judgement free attitude! 😊\nLet’s make your home shine! ✨

Avatar for SW WOOD LLC
SW WOOD LLC
5.0(
1
)
Window A/C Unit - Service or Relocate

Serving Williamstown, VT and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I was very pleased with the work he did, he has a nice way of explaining things , I sure I will hire him again for other projects when needed he is a very pleasant person to deal with. Tank you Scott for being such a nice guy ."
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+6

3 neighbors recently requested a quote
Avatar for Jay Scannell
Jay Scannell
New to Angi
Air Ducts & Vents - Clean

Serving Williamstown, VT and surrounding areas

Approved

Free estimates

Small jobs welcome

Offers commercial services

My name is Jay Scannell and I enjoy cleaning and making things spotless. My mother always made sure our house was clean as I was growing up and naturally I have liked to follow those similar footsteps and take it that one step further. I’d enjoy cleaning for you and your family if need be and I am open to anything you throw at me:).

Avatar for UCS Construction and Design
UCS Construction and Design
New to Angi
Air Ducts & Vents - Clean

Serving Williamstown, VT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

We are new company just getting started I have a team of licensed professionals I work with. We are very well rounded in our field of work. Doing everything from small handyman repair and installation work to full remodels and renovations. No matter how big or small the job is we are here to help and give great prices and discounts to help home owners and other professionals. Always leaving up to code, quality work, and satisfied customers behind. We also do custom work such as Accent/feature walls that give a home that unique and elegant feel to it.

Avatar for Preferred Oil & Propane Service
Preferred Oil & Propane Service
4.4(
26
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Williamstown, VT and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Exceeded all expectations. Dennis and his helper were amazing. Kept us informed when special order parts would arrive. Absolutely one of the best experiences I have ever had with a contractor.. In a Five Star ranking system I would give Preferred Oil & Propane Service at least 7 Stars."
Recommended by91%of homeowners
Avatar for Vista Home Improvement
Vista Home Improvement
4.3(
419
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Williamstown, VT and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"They did an excellent job. They initially misquoted the price on the low side but the president said they would go ahead and honor that price. They were very responsive to anything needed before and after the job was done. They stand behind their work and in my opinion are an exceptional company. I would highly recommend them and I would definitely use them again."
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+41

Recommended by87%of homeowners
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Air Conditioning FAQs, answered by experts

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

The outdoor portions of air conditioners are designed to weather the rain, so you don’t need to worry about it. An awning or roof will help protect them from snow or falling debris, which can do more damage. This is true of both window AC and outdoor units for larger systems.

Mold in your air conditioner isn't a good thing, as it can be harmful to your health. If the mold travels through the ductwork or is blown out of the A/C, you and your family can inhale mold spores and develop respiratory illnesses and other problems. Preventing mold from growing in the air conditioner will help protect your health.

Here’s the cost formula to find out how much it’ll cost you to run a window air conditioner in your home:  Watts * (hours used) / 1,000 * (Local kWh) = daily cost of running a window unit. If you need help calculating the cost of running your window AC unit, consult an AC repair or installation pro for an accurate estimate.

You should flush your AC drain line once every three months to keep it clear of debris and buildup. Keeping your AC drain line clean prevents clogs, backups, mold growth, and extra wear on your AC unit. If you live in a humid area or have several furry pets, up your cleaning schedule to once a month.

The Williamstown, VT homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.