Water Heater Repair

Get Your Hot Water Flowing Again—Fast

A broken water heater can bring your household to a halt. At A&S Nathan Heating & Cooling LLC, we provide fast, reliable water heater repair services throughout Connecticut. Whether you have a conventional tank model or a modern tankless unit, our licensed technicians have the training and experience to diagnose the problem and get your hot water back quickly.

Common Water Heater Issues We Fix:

  • No hot water or inconsistent water temperature

  • Leaks around the tank or piping

  • Strange noises such as popping or rumbling

  • Rusty or discolored water

  • Pilot light or ignition problems in gas units

  • Electrical issues in electric models

Why Choose Us for Repairs?

  • 24/7 emergency service available

  • Fully licensed and insured technicians

  • Honest recommendations—repair when possible, replace when necessary

  • Experience with all major makes and models

Don’t let water heater issues disrupt your day. Call A&S Nathan Heating & Cooling LLC for prompt, professional repair service and enjoy reliable hot water again.

5-star rating
A&S made the whole experience of replacing my Furnace and AC seamless. The installers seemed very knowledgeable, efficient and punctual. In this day and age it was good to deal with
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— robert duchnok
5-star rating
I just wanted to say is on Friday October 31, 2025 we needed service done on our oil burner. Your technician Mr Craig & I forgot the other gentleman name. They did an awesome job do
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— Abtin Nejad
5-star rating
I used them to do a oil furnice tune up. I absolutely love it 100 percent I will call them this year as well. The guy that came have a really good knowledge of what he had to do.
— The Reviewer 85
5-star rating
Very good experience. Jake, Ian and team did a first rate job on our central AC installation. The entire team – including the office staff – were prompt, professional and co
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— John Conroy
5-star rating
Really great job. The crew was here on-time, replaced the unit quickly, covered my hardwood floors to protect them, cleaned up and was so very polite and professional. We will continue
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— Mike Prete
5-star rating
We have been using A&S Nathan for several years for yearly furnace cleaning and this was our first need of emergency furnace service. On 9/23, I called A&S Nathan at 913am as ou
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— kathy scholz
5-star rating
My furnace kept going in and out on a cold day . Even though they couldn’t fix my old furnace (30+ years old) on the initial service call , the tech was very thorough in diagnosin
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— John Crowley
5-star rating
This company is definitely one of the best!! Had AC issues made one phone call and they sent help right away!! This gentleman was spot on honest and got the parts and did the job asap!
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— Mike
5-star rating
We’ve been customers of A&S Nathan for some time so the decision to use them was easy when it came to replace our boiler. The process was easy and the installation was quick and s
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— Briget Stronge
5-star rating
Kyle was fantastic! So personable and quickly helped resolve our AC issue on a very hot day! He is such a credit to your business.
— Kate Dillon
5-star rating
Quick response and spot on with repairs and all very resonable!!!
— Dianne Camella
5-star rating
Had A&S Nathan come out and service my in-laws house this week 11/5. Stew was the tech and did an excellent job! He was very professional, knowledgeable and a polite guy. He got the
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— Victoria Kondor