Best Heating & Air Conditioning / HVAC In Waltham

“Initially, I spoke with Ken regarding an issue with the line sets for my mini-split. Insulating foam casings wrapped around the line sets were disintegrating. Ken sent George to inspect the line sets and replace the casings with a higher grade product. George was very knowledgeable, answered all my questions, and did a great job carefully wrapping the line sets with the new product. The cost for the replacement was very reasonable. I highly recommend Ken's HVAC Service!“

“Great service from Genove Oil. I had been looking for a long time for an honest reasonable HVAC company. I was pleasantly surprised. Very knowledgable and they found an issue no one had ever found. Have already referred them to others and look forward to using them again!“

“Professional and honest air duct cleaning service in Natick. Nick arrived on time, explained the process clearly, and showed photos of the ducts before and after. The airflow in the house improved right away and there’s noticeably less dust. Fair pricing and no pressure. Highly recommended.“

“Murphy Fuel did a great job installing our mini split system last fall. Terry and the team were professional, responsive, and kept everything on schedule from start to finish.

Our setup was large and had a complicated layout, but they handled it without any issues. During the estimate and planning phase, Terry was especially accommodating—he took the time to walk through options with us and was flexible when we decided to change the originally planned locations. That level of patience and willingness to adapt really stood out.

After the installation, they even came back to make sure everything was working properly, which we really appreciated. Overall, a smooth experience and a team that clearly cares about doing things right. Would definitely recommend.“

“Hayes oil is a great oil company, I would always recommend them 100% Lisa does a great job!“

“The very best, truly! People like Andrew are incredibly rare these days especially in 2025 when so few people follow through on their word, take genuine pride in their work, or value craftsmanship over cutting corners. But AE Carter is a refreshing exception. This is a company defined by integrity, excellence, and a commitment to quality that speaks for itself. It’s no surprise their reviews have always been exceptional. They’ve certainly earned a lifelong client in me.

For a bit of context - summer was quickly approaching and after an unfortunate experience with another HVAC company I found myself in urgent need of a trustworthy, capable team. From the moment I spoke with Andrew I felt I was in good hands. He assured me he would arrive on a Monday at precisely 8:30am and, to my genuine amazement he showed up exactly on time, to the minute. In today’s world that kind of reliability is almost unheard of. What’s more, Andrew tackled the issue with such professionalism and apparent ease, though I know it required tremendous effort and dedication behind the scenes. He treated my home with care and the results speak volumes. I’m sincerely grateful and from now on I’ll be recommending AE Carter (and Andrew in particular) to anyone in need of outstanding service.

Thank you again Andrew. Your work and character are deeply appreciated!“

“Mr. Hickey just helped make my new bathroom a realty. He showed up when he said he would, did the work he said he would do, charged what he said he would charge and stayed incredibly patient with my questions and, most importantly with Otis (my overly friendly, wants to help with everything, dog.) He took what was deemed a plumbing mess and made it a thing of beauty and perfect functionality. I know I will not need him anytime in the near future, but you should consider him for all your plumbing needs. You will as happy as I am if you do!“

“Very honest and responsive....100% recommend them! Best plumber I've ever used. Showed up immediately for a leaking pipe, quickly resolved the issue, and charged a fair price.“

“I’ve always had a great experience with Syntegra Services. They installed my shop lifts and electrical wiring, and I was very pleased with the quality of their work. I also called their plumbing department for a clogged pipe issue, and they resolved it in no time. I highly recommend them!“

“Yes! 5 stars! I have wet macular degeneration in one eye, glaucoma in both with hard to manage pressures and I just had one eye's cataract removed with two very different stigmatism readings. II am a challenging eye glass fit to say the least! My new glasses came in this month. Oops they made me ill to wear, but why? The prescription was verified to be the correct one. Sally Kroger, heard me out on my medical history, retested all prescriptions, tried several tweaks and I left seeing better than ever. Taylor and Murphy are where people care ?.
This is the first time in several years that the headlights on cars do not blind me. My appreciation and gratitude to Taylor amd Murphy, especially Sally Kroger who went an extra 10 miles with me!“

“Thank god for this company. My main air-conditioning system and floral cooler stopped working. I wasn’t sure who to call for both AC and a floral cooler. I went on google and found this company. The first company I tried, told me my coolers were old and I should just get a new ones. Called Leblanc and they came over and fixed both on same day. This literally saved my flowers & team for a huge event I had. Cant thank them enough. Try them and thank me later.“

“Woke up this morning freezing, called Burns Mechanical and they came in just over an hour! The good news it was just the furnace doing its job. Snow has gotten into the intake and froze. To prevent carbon backup it shuts down. Thank you for heat and great work!“