Top-rated tankless water heater repair pros.

Get matched with top tankless water heater repair pros in West Islip, NY

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Tankless water heater repair pros in West Islip

Avatar for Patience HVAC, LLC
Patience HVAC, LLC
4.9(
30
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 2020

Free estimates

Emergency services offered

"I am very happy that I hired Patience HVAC to replace my hot water heater. I have an oil burner and oil hot water heater. The 18 year old heater was making crackling noises and I was advised by the oil company to replace it. I wanted to convert to a gas hot water heater and tried going through Lowes. However, they only do swap outs if the existing heater is already set up for gas. So I contacted several companies for a quote. Out of all of them, Anthony was the most professional, down to earth and reasonably priced. First, he suggested to explore correcting the issue on the old heater and save me money which was impressive. I decided to proceed with a new gas heater. The quote he gave me was $800 less than the next lowest quote. Anthony sent his workers Caesar and Matt the next day which I greatly appreciated. They were both very polite and wore covers on their shoes so to avoid dirtying my house more than necessary. Anthony came later in the day to ensure everything was done correctly. He then offered to call him with any questions even if they were not pertinent to the work they performed. I am extremely impressed with patience HVAC honesty, professionalism and reasonable prices. I will be sure to recommend them to friends and family. When I am ready to install a ductless air conditioner, I will definitely contact Patience HVAC."
Peerless
Peerless Boiler with Hot Water
Annual Service
Response time4 hrs
Recommended by100%of homeowners
Avatar for Surefire Mechanical Corporation
Surefire Mechanical Corporation
4.7(
146
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 2013

Free estimates

Emergency services offered

"I sent a message to the company in the late evening regarding my broken central AC and Jason was here Tuesday morning to look at it. He tried to repair it but was not able to due to the age of the unit and the damage. We needed a new unit and he was here to put it in first thing Wednesday morning. Took him two hours and our AC was working. He was nice and professional. We felt the price was reasonable. Would use him again and recommend his business."
4 Zone Navien Boiler
1st Floor AC System
Hi Efficient Heat and Hot Water
Snow melt sensor
Manifold

+14

Response time10 mins
Recommended by97%of homeowners
Avatar for Varsity Home Service Company, Inc.
Varsity Home Service Company, Inc.
4.8(
197
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 1962

Free estimates

Emergency services offered

"I called Varsity on a Sunday night when I realized I had no hot water . It was the day we had the snow storm. The next morning Sean arrived to access the issue with my very old hot water heater. He was extremely knowledgeable and gave me my options. Within a short time Jake and Anthony joined and my new water heater was installed and working. No mess , no stress. They were amazing. Sean even shoveled the skirt of my driveway when the plows came and blocked me in as I was trying to get to work. This team went above and beyond to help any way they could. My utility room look clean and the work done right. I highly recommend Varsity. I feel comfortable knowing the technicians had the right training and were really nice guys to deal with. Thanks to Erica for taking my call so late and to Christine for getting the men out so quickly the next morning. They kept me informed every step of the way. I appreciated that. "
Shower Fixtures
Installation
Truck
Best of L.I. Winner 2024
Angi 2022 Super Service Award Winner

+86

Response time11 hrs
152 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.8(
55
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 1969

Free estimates

Emergency services offered

"They installed a minisplit cooling system, with 3 exchanges June 2021. Since then it is not operating the way it should. In my bedroom with the door closed at night on cool at 70 degrees the humidity goes up to 80%. I wake up uncomfortable, change it from cool to dry mode. The humidity will go down into the 50% range but the temperature drops down to 62 or less! So in cool or dry mode I can't get a good nights sleep! They come and look at it and tell me everything is fine. I'm going to buy a window air conditioner tomorrow which seems insane because i spent $10,000 on this minisplit AC system!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time3 days
4 neighbors recently requested a quote
Recommended by96%of homeowners
Tri Seasonal Plumbing, Inc.
4.5(
18
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 2025

Free estimates

Emergency services offered

"I called Jim for a frozen pipe, and I’m so glad i did. They responded quickly, diagnosed the issue right away, and had it repaired before it caused any further damage. The plumber was professional, courteous, and took the time to explain what caused the problem and how to prevent it in the future. Fair pricing and great service - highly recommend."
Response time8 hrs
Response rate96%
8 neighbors recently requested a quote
Avatar for BERARDI ELECTRICAL CONTRACTING, INC.
BERARDI ELECTRICAL CONTRACTING, INC.
4.4(
55
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 1999

Free estimates

Emergency services offered

"superb - professional workmanship ... from the moment we interviewed - i was confident (yet more importantly comfortable) that my home was in excellent hands ... i would NEVER use anyone else ... if you want your job done correctly - don't look any further PROFESSIONAL / KNOWLEDGABLE / HONEST / a truly talented craftsman ... a keeper - would recommend highly "
Lido beach NY
Lido beach NY
Lido beach NY
Response time6 hrs
Response rate91%
2 neighbors recently requested a quote
Showing 1-10 of 12