Best Heating & Air Conditioning / HVAC In Waltham

“Came out and serviced my furnace that had not been cleaned in many years. Did an excellent job, and clearly explained all issues and concerns. Will definitely call them again.“

“Great service & very reliable! We've been with Genove for 2 years now & plan to be with them for another 40 + years. Great pricing and easy website to navigate. I highly recommend them!!“

“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!“

“We called them about our a/c, they came the next day and had it up and running in no time. We have also have our heating system serviced by them every year. They are always on time, clean and efficient. I would recommend them any time. Just a terrific company to deal with.“

“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.“

“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!“

“We've used Formal Oil for about 20 years. Never had a problem. They are super nice people who have also fixed plumbing issues for elderly family members who own homes in Waltham but are not regular customers. Answering service is just that, but has never been rude. Just have to wait for one of owners to call back when they have a chance. They always call back and always helpful. Prices have always been perfectly reasonable - even when doing work for family members who are not oil customers.“

“Murphy Fuel replaced my oil heating system and everything works great. They deliver fuel on time and are very professional and courteous.“

“I had a hvac problem & was not sure how complicated & expensive the repair would be ,I'm not familiar with hvac systems at all. Angelo came out and put me @ ease ,troubleshot my system installed new thermostats and fix my hvac problems with a very reasonable cost. I would definitely recommend syntegra & Angelo for your hvac needs.“

“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.“

“Had them install two new heat pumps last June (2024), which are the primary source of heating in the house. Old ones were inadequate and needed replacing. The price was superior compared to the competition. A large crew descended on the house in the morning and were done by noon. Everything was done right the first time. We've now survived the first winter with them and they didn't miss a beat even down to 0 F. I had no problems at all communicating with them.“