HVAC reviews in Belmont, Massachusetts

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.

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.

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.

Thank you team!

Oil always on time.

Very clean job and pipes and overall layout is very good

They were on time ,job completed. I would recommend them

Great reliable compony with fair prices. Highly recommended

If a woman with a Caribbean accent answers, either hang up or prepare yourself for the worst customer service you have ever experienced

Excellent service. Very thorough work and knowledgeable staff.

Installed a new HVAC blower motor.
Job well done!

Angelo and his entire team did a great job on our HVAC replacement.

I found water coming from my hot water heater on a weekend morning. All they needed was a small amount of information about my system and were able to have the unit replaced within a couple hours. Fantastic service.

Called at 9am, by 1pm they had visited twice, obtained the correct part, and completed the repair. The technician was friendly and helpful, and I was really impressed with their speed and response time.

I have been a customer with Thermoil for over 20 years. I use Thermoil for heating, air conditioning and plumbing service and installations. They are very competent and professional and I strongly recommend Thermoil . I have been a very happy customer for all these years.
Hassan Tehranian
Professor, Boston College

This is a fabulous company. My regular maintenance company sent out a kid who had no idea how my furnace worked. They told me I needed a new furnace and quoted me an astronomical price. I got Thermoil’s name from a neighbor. Thermoil came out during an extremely busy and for freezing cold day. Diagnosed and fixed the problem in about fifteen minutes. I would never go to anothe company.

I have used their services many times, including plumbing work, water heater installation and recently heat pump for second floor and ductless heating/cooling for first floor. They are fair, punctual and professional.

We had an issue with our HVAC unit in the middle of the heat wave and they came to our home the same day we called them. They even came back several hours later to make sure it was working properly. I am 9 months pregnant and obviously concerned about the heat and getting the problem fixed quickly, and I could not be MORE pleased with them and their service.

We used Thermoil for our heat pump. They were very professional and reasonably priced. The quality of their work was great.
I was very pleased with their workmanship. They showed up on time and finished the job on time.
I will definitely recommend them. Thank you Thermoil for your help.
Juliet Ghazarian

+We use Thermoil for all 111 ductless units (plus office, lobby, etc). They are incredibly knowledgeable, efficient, and reasonably priced for the tremendous service that they provide. There is no other company we trust to not only install but continue to provide service to this building. The entire staff is wonderful and comes highly recommended!

During the weekend my kitchen drain had started leaking from under my sink, leaving it unusable for the time being..I then called ThermOil to ask for a plumber to come take a look and fix it. Within 30 minutes the plumber was at my house taking care of the problem and had fixed it right then and there. He had also explained to me where the leak was and had shown me what he had replaced for parts,I am very fortunate to have a great company like this that responds so quickly. I highly recommended ThermOil