“A&S is the real deal! I just bought a new home that needed work on re-wiring the thermostats. Other services attempted to fix the issue but could not get the job done. A&S showed up and within no time had the problem fixed and the heat back on. I highly recommend them.”

- Jamie Bean

“Prompt free quote, honest guidance on what the best repair/replacement would be. The crew that installed our new boiler was professional and courteous.”

- chris sauro

“We have used A&S Nathan for several years for our air conditioning, heat and water heater maintenance. Last night, around 8pm on a Friday evening we discovered our basement was partially flooded as our water heater had died. We called A&S Nathan and they were so helpful and quick to respond to us and let us know help would be on the way the next morning. At 8am this morning they arrived to install a new hot water heater. They were so nice, and installed it quickly. We are so thankful for their help when we were so panicked (and to have hot water!). Please consider using A&S Nathan as we have had nothing but a good experience with them over the years. Thank you again!”

- Lauren

“To anyone that this may concern: I seldomly take the time to write a testimonial. However this company deserves my accolades for their exceptional service. Within the past two weeks I signed on for their 24/7 oil furnace coverage for four individual properties. I have three single family homes in Oxford, Connecticut as well as my own personal residence in Woodbridge. After servicing my rental homes, I made the fourth appointment to service my own personal home in Woodbridge. On the fourth service call, I proudly shared with my Technician (Craig) that my hot water boiler (Weil Mclain) had never given me any issues after fifteen years of faithful performance. Of course the week of my last servicing, the boiler developed major leaking. Thanks to A&S Nathan's receptionist/coordinator (Beth) the entire project was orchestrated through her manager (Heather). My hot water boiler was installed quickly with flawless installation. Installation technicians, Scott and Craig, are truly like having "family member in the business". This company is so thorough and conscientious, Heather was able to have Weil Mclain stand behind their hot water tank after fifteen (15) years of service at no cost to me ! It is without reservation that I recommend A&S Nathan Heating & Cooling LLC as one of the most reputable and trustworthy firms which I have had the pleasure of doing business after fifty years of residing in the Valley. If you seek the best service for your dollar, in addition to people you can trust with your comfort, look no more - A&S Nathan Heating and Cooling delivers on all counts. It is without reservation that I recommend this business without any hesitation what-so-ever. Thank you, yet another grateful customer, Bob Caetano Woodbridge”

- Robert Caetano

“Of course A/C always breaks on the hottest most humid day of the summer. I have not previously been a customer and called based on the recommendation of a friend. I left a request on the website at 7:00PM. Got a response within an hour promising a tech first thing in the morning. Sure enough, John showed up at 8:00AM sharp. Clearly a very knowledgeable professional. Diagnosed the problem and replaced bad parts (he had the replacements on the truck) and was gone at 9:30. It doesn’t get any better than that!”

- John S

“Highly recommend! Reliable, convenient and trustworthy! Awesome technicians!!”

- Jennifer Gonzalez

“I reached out for help with my AC unit that wasn’t cooling, and they came out the same day to diagnose the problem. Mark, the technician, was very knowledgeable and took the time to explain the issue clearly. I highly recommend their services to anyone.”

- Carlos Caraballo

“I had an issue, I called and I got through to the office manager heather . She was awesome,!, they were able to get someone to my house the same day to fix my issue! Prompt service! And grade A service !! The tech was courteous and knowledgeable, and was avke to fix my issue quickly! Thank you A&S !!”

- Jorge Lopez

“Tech Mark was just here to do a checkup on furnace and AC. He was punctual and very knowledgeable. He answered all my questions. I am in a wheelchair and cannot get into my basement. He took pictures to show me a few things that should be taken care of! I would definitely use them again..”

- janet c

“The guys at A&S Nathan are always Great! They show up on time and complete the job. I have used them for both a new furnace and a new A/C system. Great company!”

- Michael