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Top-Rated Tankless water heater installers in Monroe - Updated Nov 2026

Avatar for Expert Mechanical, LLC
Expert Mechanical, LLC
4.6(
182
)
Tankless Water Heater - Install

Serving Monroe, NY and surrounding areas

Approved

In business since 1985

Free estimates

Small jobs welcome

"Agustin.R from Otisville ,NY Seth came to my home and explain ,what needed to be done.How much it was going to cost and loan me a temporary boiler until they installed my New Indirect water heater.Him and the Workers were great. While in my home the workers notice that a valve needed changing they explained what would happened if We kept it longer so they changed it. I am very happy with the work and will use him again.I felt they were honest and skillful!!!"
Expert Mechanical, LLC
Response time8 hrs
Recommended by94%of homeowners
Avatar for TMO Plumbing & Heating & Electric
TMO Plumbing & Heating & Electric
4.9(
120
)
Tankless Water Heater - Install

Serving Monroe, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Being new to the area, I didnâ t know who to call for a fast flowing hot water leak in one of our showers. My Google search brought me to Angiâ s List which brought me to TMO Services. Mark came to see the problem, how he could fix it, gave me an estimate of what it would cost. Mark is a professional, he installed new pipes and a new shower. He discovered an incorrect setting in the water heating part of the furnace and corrected it. Voila, no more leaking shower and no more constant variations in shower temperature while showering. Thank you, Mark, for your excellent work."
Response time7 hrs
Response rate90%
40 neighbors recently requested a quote
Avatar for 1 & Done Plumbing
1 & Done Plumbing
5.0(
12
)
Tankless Water Heater - Install

Serving Monroe, NY and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"⭐⭐⭐⭐⭐ Great experience from start to finish! They replaced my leaking hot water heater, reworked the piping, and made sure everything was properly installed and working as it should. They did a great job addressing the old piping and making the necessary repairs to ensure everything was done right. Professional, reliable, and thorough with their work. I’m very satisfied with the service and would definitely recommend them to anyone needing plumbing repairs or a hot water heater replacement!"
26 neighbors recently requested a quote
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Tankless Water Heater - Install

Serving Monroe, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Installers arrived on time and everything went smoothly. Had to have them back a couple of times to balance out the rooms. Some were not cooling properly. After the third time they finally got it right. First technician was a younger guy who was not keen on going into the attic since it was hot up there. He didn't know what he was doing. Second guy the same. Third guy was an older tech that I made a comment about it being hot in the attic and his comment was that this was his job no matter the conditions. Very professional. Should have sent him the first time."
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Advanced Professional Management, LLC
Advanced Professional Management, LLC
4.2(
939
)
Tankless Water Heater - Install

Serving Monroe, NY and surrounding areas

Approved

In business since 1999

Emergency services offered

Warranties offered

"Outstanding service, start to finish. Professional, courteous, constant communication. Isha from the home office was in constant contact - phone, two email confirmations, and texts. She called to ask if the service could start a bit earlier, which was fine with me. Alex arrived promptly, put on shoe booties before entering the house (not necessary here but a nice touch). Alex was outstanding. Young fellow with many years experience, and it showed. He explained each part of the task as he went through it, and answered my many questions related to other potential work I brought up. Getting the anodes out of the water heaters - first time replaced - was a bear. He explained he had to get another socket wrench to loosen the anodes - the ones he had did not fit properly. No charge for that time, which though I expected, has not always been the case in my past experiences. Anodes were locked in tight, and took a while to loosen. Doing one water heater at a time, they finally came out, encased in calcium deposit. He then screwed in the replacement anodes and locked them in. Alex completed all the work, put everything back together including the fans on top of the units, tested, and re-tested. Continuing to explain each step. He took pictures of the work for the invoice, ran me through the details again. Everything done on his tablet computer; I received an immediate email receipt. Excellent work with knowledge behind it. I have an external faucet which needs repair, and may be looking for a whole-house water softener. When time comes to replace the water heaters, Advanced Pro will be at top of my list."
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+33

Response time11 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Adventure Plumbing Services
Adventure Plumbing Services
4.8(
11
)
Tankless Water Heater - Install

Serving Monroe, NY and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Kevan (spelled with an "a") was the only plumber who even called me back the day after Christmas. All these other companies that advertise 24/7 & Holidays emergency service did not even answer the phone. We lost power and our pipes froze in super cold weather we had Christmas 2022. In 32 years my pipes never froze but they did this time and they burst in multiple locations. Kevin called and came out the same day and worked into the night replacing multiple ruptures. He is extremely courteous and professional and I HIGHLY RECOMMEND HIM for any plumbing or water treatment needs. Ken H., New Paltz, NY."
Response time8 hrs
Recommended by88%of homeowners
Avatar for Supreme Mechanical Group Corp
Supreme Mechanical Group Corp
5.0(
10
)
Tankless Water Heater - Install

Serving Monroe, NY and surrounding areas

Approved

In business since 2015

Emergency services offered

Small jobs welcome

Premier provider of residential and commercial plumbing and mechanical solutions also drain cleaning and sewer main unclogging serving the Tri-State area, including New York and New Jersey. \n \nFrom emergency repairs to comprehensive system installations, we combine industry expertise with high-quality workmanship to keep your properties efficient and safe. At Supreme, clear communication and a customer-first approach give you the peace of mind that your mechanical systems are in expert hands.

Hotel drain cleaning
Hotel drain replacement
Hotel drain cleaning
Fire pump installation
Sink repair

+4

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