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Top-Rated Tankless water heater repair pros in Farmingdale - Updated Nov 2026

Avatar for Mr. Big Plumbing & Heating
Mr. Big Plumbing & Heating
4.9(
15
)
Tankless Water Heater - Repair

Serving Farmingdale, NY and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

Big Plumbing and Heating, Inc., is your local contractor with over 20 years experience in taking care of all your needs. We do installs and service work for Suffolk and Nassau Counties. Call Today!

Response time1 day
Response rate90%
Recommended by100%of homeowners
Avatar for Premier HVAC Services
Premier HVAC Services
4.3(
229
)
Tankless Water Heater - Repair

Serving Farmingdale, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Affordable HVAC repair service. You can actually ask them to do little extras at no additional cost. After I called them for emergency repair of our AC unit, they offered a complementary cleaning for the unit. Amazing customer appreciation. Totally recommended!"
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+38

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for Surefire Mechanical Corporation
Surefire Mechanical Corporation
4.5(
157
)
Tankless Water Heater - Repair

Serving Farmingdale, NY and surrounding areas

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 All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Tankless Water Heater - Repair

Serving Farmingdale, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Called because heating system would not start up.  The company came a short time later and found out the problem was a simple fix which involved adjusting the angle of a waterline.  I highly recommend because the service was great and I had a very good overall vibe throughout the whole process.
"
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for BERARDI ELECTRICAL CONTRACTING, INC.
BERARDI ELECTRICAL CONTRACTING, INC.
3.7(
72
)
Tankless Water Heater - Repair

Serving Farmingdale, NY and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Leo came on Sunday accessed the situation Came back on Monday bought the parts and installed on Monday! Fair price for efficient friendly expert repair and advice... Would definitely recommend this company!! Very grateful for a job well done."
Lido beach NY
Lido beach NY
Lido beach NY
Response time7 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Aqua Tech Plumbing
Aqua Tech Plumbing
4.7(
3
)
Tankless Water Heater - Repair

Serving Farmingdale, NY and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"I put in the request in the evening and didn’t expect such a quick response. Klaudio was able to come out and inspect the issue and get it completed right away. He was knowledgeable about what needed to be done. Also offered advice about future repairs."
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+2

1 neighbors recently requested a quote
Recommended by100%of homeowners
HomeServe of Long Island
2.5(
1
)
Tankless Water Heater - Repair

Serving Farmingdale, NY and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

HomeServe Energy Services (HES) provides reliable heating and cooling experts that service over 1,000 communities in 26 counties across New York, Massachusetts and Rhode Island, from five “depot” sites supporting metro New York, southern New Jersey, Rhode Island and eastern Massachusetts. With almost 200 technicians (including certified refrigerant handling technicians and NATE-certified technicians), HomeServe provides emergency heating, cooling and water heater repairs as well as tune-ups and new equipment installations. \n

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