ThermOil, Inc.
About the business:
In Belmont, we're ThermOil, Inc., your go-to HVAC specialists. For over three decades, we've been delivering unparalleled solutions to local homeowners, ensuring their comfort and energy efficiency are never compromised. As a versatile HVAC contractor, we offer comprehensive services that span from air conditioning repair and installation to heating system maintenance and equipment supply.
We're more than just a heating oil supplier – we're your reliable partner in maintaining a warm home during the chilly winter nights. Our plumbing expertise further solidifies our commitment to providing a complete range of home services. With a customer satisfaction rating of 4.8/5 (based on 32 reviews), you can trust us to deliver exceptional workmanship and peace-of-mind solutions for your Belmont property. At ThermOil, Inc., we're not just about business – we're about building long-lasting relationships with our valued customers.
Services:
All services 7Photos and videos
Hours of operation
- Mon – Fri
- Sat
- Sun
- 8:00 AM – 5:00 PM
- 8:30 AM – 12:30 PM
- Closed
Latest reviews
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CHL26 May 2026
TL;DR- One star for business ethics - Oil spilled on property.
Decent price, called the owner a few times and he sounded friendly. However, for the past few oil deliveries, they constantly spilled diesel on my walk path. When it first happened, I didn't notice until the next day after delivery and saw my dog was licking his paw like crazy after our walk and this awful diesel smell on him. Took a good hour or two to clean my dog and the concrete. I first thought it was an honest mistake until it reoccurred the next month after auto oil delivery. Never received any notes from them admitting it or saw attempts of cleaning up their own mess- Like it ain't hard to grab an oil absorption pad while taking that nozzle from the truck to the fill pipe and reverse. Now, after snow just melted, all the diesel they spilled into the soil and sidewalk can be seen running off down the street into the sewage drain. EPA? OSHA? Never heard of them. -
harris babrak26 May 2026
I chose Thermoil for an installation through the Mass Save rebate program and had a great experience. The technicians were professional, always on time, and kept everything extremely neat and clean. Anytime I had a question, they took the time to explain things clearly and made the process easy to understand.
They stayed on schedule from start to finish, which made the project smooth and stress-free. My wife works from home, and the team was very respectful and kept noise to a minimum so she could continue working without interruption.
Overall, an excellent experience and definitely a five-star company. The office staff was also fantastic and very helpful with the loan process and paperwork.
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Alex Der-Kazaryan26 May 2026
Thermoil recently installed mini splits in our home. The team was very friendly and patiently answered all of our questions. Their work was professional, timely, and completed in a clean and organized manner. We’re very satisfied with the service.