“I had Mark from A&S Nathan come to my home for a repair. I can not say enough great things about his service. He was super friendly and knowledgeable making me feel comfortable. He went to work and fixed the problem, as a customer that’s what we are looking for right ? He was transparent when explaining my issue, which in return gained my trust . Lastly by the time he finished I feel as if I gained a friend ! Mark thanks again and keep being a great human we appreciate you”

- Michael Eaton

“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

“These guys absolutely Rock!! They installed a new Weil-McClain boiler today, to replace my 30 year old unit. Workmanship was superb! They were clean, professional and indeed craftsman. Not only do they want the job to work right, but they want it to look right as well! Great price and great service. I am a customer for life now! Thank You! Jason”

- Jason Dokla

“A and S Nathan has very experienced service technicians, who take the time to answer customer questions and concerns. This business is very honest in their determination of what work needs to be done, and they don't try to sell you something you don't need. So the customer is respected and valued. We've used A and S Nathan for 5 years for heating and A/C maintenance, and recently Scott performed maintenance on our tankless hot water heater and replaced our furnace humidifier. Yesterday Ian and his team replaced our air conditioning after our old system failed, and they did a superb job with the installation. Ian took the time to explain how everything worked, and double checked all of the work done. We love our new air conditioning. I also want to mention how wonderful Heather, Joanne, and Beth are to work with when scheduling appointments or answering questions. They have been very patient with all of my questions, and I appreciate that! Thank you!”

- Cheryl Morgan

“We purchased and had a new Water Heater installed. I can't say enough great things about he company. They were on-time, did the job well, and at a better cost than others. I would hire them again in a heart-beat!”

- Jason Martinez

“7pm on a Saturday night & my furnace goes out. Who did I call? A&S Nathan of course. The tech was there promptly. Clean & professional. I had heat in less than an hour. These guys rock. I will need a new furnace & hot water heater soon and I can't think of anyone else to do it. Thanks again to Al and your professional staff.”

- Paul Harris

“I’m extremely happy with the installation of our new AC system; works great, technicians were professional, polite and considerate throughout the entire process … I highly recommend A&S Nathan for your Heating and Cooling needs !!!”

- Stephen Raccio

“I have been a customer of A&S Nathan for several years. Scott always does a great job with my annual oil furnace tune up. Scott always goes above and beyond and patiently answers all of my questions. I highly recommend Scott and A&S Nathan for all your heating and cooling needs.”

- Alessandro Lopes

“I used A&S Nathan to repair my a/c unit. They were there in what felt like a couple of minutes. Mark D was the guy that came out, he repaired my a/c without any problems. He was definitely a stand up technician who knows his stuff , he didn’t mind at all that I was watching and asking questions. Next time I have any boiler or a/c problem I’m calling these guys and requesting Mark”

- Chris Turner

“My A/C stopped working July 2, 2023. My friends recommended A&S Nathan. They promptly responded to my call and very quickly and efficiently repaired my unit. As the parts were under warrantee, they took care of this also.”

- Alan Davidson