HVAC reviews in Waltham, Massachusetts

John and Berk are truly some of the most honest and genuine business owners I’ve ever met. From the start, they were friendly, professional, and explained exactly how they would clean the ducts. They even took the time to point out what was wrong with my heating system, which I really appreciated. Sometimes you meet business owners who seem more interested in making a sale than doing what’s right — but with John and Berk, it was the complete opposite. Their honesty and transparency really stood out. I highly recommend them for any duct cleaning work — they’ll do the job right and with total integrity.

I had a great experience with a team from Healthy Duct today. I am a new homeowner and I wanted to get my ducts cleaned after moving in. They were punctual, polite, professional, and performed quality work. They are NADCA certified and took care to explain how what they were doing was in alignment with those rules. They document everything very well so you can see the before and after results of their work. They also took time to show me a few minor issues with my air handler, which is outside their scope, but that I should look into. This is a company that seems to truly care about their customers, not just as as a source of revenue, but as human beings - very rare these days.

John gave me a great impression on the phone and made sure that I had the knowledge to find qualified professionals (he even sent me a link to the NADCA search page), prioritizing his profession over getting the job personally.

Henry and Berk came today and I cannot say enough about them. They broke down costs and helped walk me through every option, made sure there was no pressure of any sort, and took extra time at every stage of inspection to help me learn and understand more about caring for a home. They were excited to learn my partner's profession means she would understand much more and encouraged me to speak with her; these are people who really want you to understand everything. Their clear priority was to help me understand enough to make a decision when ready, and I must emphasize how careful they were to avoid any pressure at all.

They would have been completely willing to leave for the day with no work and kept telling me not to apologize for not doing everything at once.

When they found unexpected (to me, though they assured me that it was not unusual) mold, we switched to mold remediation as the priority for the day, and having a team of professionals qualified for both ducts and mold remediation was the best choice I could have made!

Both Henry and Berk are knowledgeable and qualified, and they present as an excellent team. They credit each other freely as the source of the best ideas and seem to really respect one another, and they both have a good sense of humor!

They listened to my particular needs and health concerns and kept them in mind throughout the process with incredible care and attention.

They also asked before opening any door, double checked permission to move anything, and treated my home with immense respect.

I look forward to seeing them again for the rest of the job when we are ready!

Our pets were also big fans. I kept them away to make things easier but they were delighted to meet the cats and dog, while once again completely respecting boundaries (ex. my dog is not allowed food from folks outside a specific group to keep things consistent for her job, two cats aren't allowed treats for health reasons).

I always read reviews carefully before hiring a contractor. Healthy Duct Property Services had excellent reviews written by their customers. When I called and spoke to John, he was friendly and informative from the start. He scheduled me as soon as possible. On the agreed day and time, he and Berk came to evaluate my house. I understood quickly why they had such great reviews! They met me at the door in a warm, friendly manner. Then they went right to work, all while showing and explaining their approach to duct cleaning. I learned about my air filter, the intake, the vents and how the heat circulates. They helped me to fix a grate that was not attached well and they showed me the inside of the vents and furnace from photos they had taken. Quickly, they determined that cleaning the system would not be necessary. They bid me farewell and did not even charge a service fee, although I would certainly have paid one. I am happy to recommend John and Berk, if you need heating, air quality and air circulation in your home evaluated. They are honest, professional and hardworking. Thank you Berk and John!

I received the HVAC duct and vent cleaning service in Dec 8, 2025. I was searching and contacting several companies at the same time to find the company which are good and able to provide service as early as possible since my duct smelly. I connected to John with call back from him and he kindly explain all NADCA. The call was very pleasant and helpful to me to learn the duct cleaning even though they were fully booked at that time. But he informed me there was one slot after someone canceled and I took the opportunity. I'm sure that It was a great decision. John, Henry and Berk visited on time and assessed quickly and explain all things about my duct and vent with their expertise. Cleaning was quick and precise and there're nothing to worry from my side. After cleaning, my family felt clean air at once and I believe it's helpful to heat efficiency. Definitely I will recommend them to my friends.

Super diligent and thorough maintenance

Great service thank you

kensinton mechanical are the best !!! Great service

Amazingly reliable and fast, go to for commercial HVAC/R

Great workers very professional

Thanks Steve McKeon Post Dorchester Ma

Great company to work with. Fair prices and quality work.

They repaired our Ice machine and was very helpful and informative.

Everyone at Kensington is very responsive and wonderful to work with. Would highly recommend!

Andrew went out of his way to accommodate us. Very appreciative of great service and support

I need our commercial freezer fixed….
Techs were great and got the job done before our ice cream social event

Great service, quick and reliable. Very affordable. Would give 10 stars if I could

An amazing company with a great and honest service. We have called them multiple time for different jobs and different locations and every single time the service is A+.

Andrew is great! Kind and professional.. Highly recommend these folks for any HBAC needs. Been using them for years! And, will continie to do so!

The people at Kensington Mechanical always respond quickly and always do a super job on all our equipment. I can't imagine using anyone else for my refrigeration needs!

Always responsive, fast, and efficient. If it's related to heating, cooling, or HVAC Kensington will get the job done. One of the few repair people I trust in my years of owning a small restaurant.

Called in 3 separate emergency requests over the past 2 weeks for my walk-in commercial freezer that has been running above temperature.

Zero response from anyone. No calls, no visits, no follow up whatsoever. Very puzzling...they used to be very responsive to emergency requests and their technicians are exceptionally knowledgeable. But now I sadly have no choice but after 2 weeks of requests I have no choice but to seek out a competitor.

Maybe they’re going out of business?