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

"Guy was hands down the best HVAC person we have ever had help us in Boston. Totally transparent, professional, easy to work with. If you need help, I would recommend asking for Guy to come out if possible."

"This company was terrific to work with. They were completely upfront about how timing would work out and kept to that schedule exactly. There were no hidden costs and the staff were pleasant to have in my home and very respectful of my property. I would be absolutely confident to recommend NV HVAC!"

"On time, neat, effective. Technicians were professional, personable and flexible. I gave a "B" on cost because I may have done better if I shopped around but having the company that was installing the HVAC install the electrical as well was a good convenience and one-stop shopping."

We are a dedicated air quality company committed to delivering exceptional service and professionalism to our valued customers. Our skilled technicians are trained in the latest air duct and dryer vent cleaning techniques. We serve both commercial and residential properties, improving indoor air quality, enhancing HVAC efficiency, and helping lower energy costs. Safety is our top priority, especially in dryer vent cleaning, where proper maintenance plays a critical role in preventing fire hazards. By staying updated with industry advancements, we deliver reliable and effective solutions tailored to each customer’s unique needs.

"I have nothing but good things to say about Philip Mills, his crew, and his company, Cassana HVAC. I wanted to install heat-pumps for central heat and air in my large home, and I solicited a few bids. Philip responded promptly to my request to visit my home and provide a detailed estimate. His price was quite competitive, the work started on time, and he and his crew did an excellent job. Indeed, I am so impressed with Cassana HVAC that I am now using them to work on other systems in my home. I highly recommend Philip Mills."

"I had the pleasure of having G&C come to my home to repair a leak within my kitchen cabinet. Not only did the technicians arrive promptly, but they walked me through the repair process step by step, working in a clean and diligent manor. I highly recommend G&C for all of your plumbing and HVAC needs!"

"I bought an Angie's list offer for Air Duct cleaning from Duct King. They called me to schedule in a timely matter. Showed up on time. Did a good and a thorough job. The technician was professional and worked hard. Better than other Air Duct cleaning companies I used before. I highly recommend them."

"Very clean, professional and efficient. Explained the whole process and what steps to be taken to preform P.M. s on our HVAC system. We will have him back in six months for follow up maintenance."

"Very Professional and Knowledgeable used them again for another service. A HVAC service"

"We called during a heat wave on a holiday week when our A/C broke, so we knew it would take a while to get an appointment, especially as first-time customers. They were able to immediately schedule us for just under a week out, and let us know up top about how their services and payments, etc. work. We actually called another provider simultaneously to see if they could come earlier, but they just ended up giving us the runaround for days instead of just saying they were too busy. They confirmed a smaller time window the night before, and showed up first thing the next day. Abner was awesome, and it was such a huge relief to have someone so nice and professional, explaining everything like we didn't know anything about HVAC (because we don't). He broke down 6 options for us to move forward ranging from the minimum service fee for the cleaning all the way up to addressing everything he saw that was weighing down on the system. He explained which options we could wait on and which ones were higher priority, etc. It feels so rare to get a home service provider with this kind of professionalism these days. I wish these guys did automotive! I didn't rate them on price because I don't have a good comparison. But we will definitely be using them moving forward based on reliability, customer service, and professionalism."