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Top-Rated Water heater repair or service pros in Commack - Updated Nov 2026

Avatar for Rapid Plumbing Service, Inc.
Rapid Plumbing Service, Inc.
4.5(
464
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"Rapid Plumbing installed a hot water heater recently. Chris, the owner, was prompt, courteous, knowledgeable and very efficient. He is detail oriented and explained everything in an understandable manner. Within an hour, the heater was installed at a fair price. Everything was cleaned up afterwards and Chris checked later that day to see how the heater was operating. We've used Chris before and will continue to use him for all our plumbing needs. He was referred to my good friend who needs a hot water heater. Rest assured, Chris is a true professional who you can trust."
american standard tub
007 ciculators
kitchen faucet pull out spray
amican standard
american standard

+137

Response time5 hrs
Recommended by76%of homeowners
Rizzo Heating & Cooling, Inc.
4.9(
87
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Guy Rizzo got back to me right away, came when said he would and fixed the problem-a dirty pilot gas line. The price was very reasonable. Guy is a straightforward, nice, fair guy. I would recommend him to anyone, including family and friends, that needs gas heat or hot water service and/or repair."
Response time7 hrs
Recommended by100%of homeowners
Avatar for Cs mechanical inc
Cs mechanical inc
5.0(
56
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

Super Service Award Winner

Emergency services offered

Customers say: True professional

"Chris replaced gas water heater, re-plumbed washing machine discharge, replaced all sink water supply valves and hoses in home and apartment. He was completely professional, on time, very good communication and did an excellent job for a fair price. I would definitely use him exclusively and I have already recommended him to others"
Install roughing to
Install new check valve
Old plumbing
Replace and repipe heater
Install roughing to

+35

Response time10 hrs
Recommended by85%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I called All Weather to give me a quote for replacing my gas boiler. They set up a time for their salesperson to come over and give me a quote. The appointment was only a few days later and a man named Joe showed up on time. He spent some time with me, I told him I was looking for a new boiler and a new hot water heater, but I wanted to see what options I have (since I was debating going to a tankless water heater). He told me going indirect hot water tank is the best option and they always use this brand that's the "best one out there". Even though he may have been right, he didn't tend to my questions or concerns very well. I felt like he was getting annoyed that I had questions and eventually I just let him run the show just to get him out of my house faster. Especially when he gave me a quote of $8600, it was much higher than I was anticipating. One thing I really didn't like was when he said I'd have to get a permit since I live in an incorporated village, which would be an extra $500, meanwhile I already had another plumber tell me a permits only $200. So I went with another company. So even though I can't rate All Weather on their work quality, I didn't get a good feeling from their salesperson."
Additional Photos
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Additional Photos

+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Excellent Plumbing & Heating
Excellent Plumbing & Heating
4.9(
28
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Excellent Plumbing was fantastic - he installed a new faucet, vanity, and water filter for me. Super punctual, really professional, very communicative, and paid close attention to detail. Everything's working great. What really stood out was Joe's dedication. He came back to check on the work and found an unrelated issue with my kitchen sink (which was already there). He gave me some great tips on how to fix it. I highly recommend Joe and Excellent Plumbing & Heating for any plumbing work. He's super skilled and has awesome customer service."
Oil to Gas Conversion
Response time3 hrs
Response rate99%
Recommended by42%of homeowners
Avatar for Surefire Mechanical Corporation
Surefire Mechanical Corporation
4.5(
157
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"What a great experience! Jason called me before I finished logging off HomeAdvisor. Same day service at my home. I called @ 3pm and technician called to say he was on his way by 4. Heat and Hot water restored within an hour at reasonable and fair price. I will hire this company again."
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
Country Wide Heating & Air Conditioning Corp.
3.9(
10
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"The owner showed up on the planned afternoon appointment day and called 20 minutes before arrival. He quickly assessed the problem with my air conditioner. Despite spending over two hours working in my attic, the price he charged was very reasonable and lower than what I anticipated. If I have any future air conditioner problems I will definitely call this owner/company."
Recommended by100%of homeowners
Avatar for BERARDI ELECTRICAL CONTRACTING, INC.
BERARDI ELECTRICAL CONTRACTING, INC.
3.7(
72
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"We contacted Berardi Electricals through Angi, and Leo reached out to us right away.Leo came to our house within an hour, quickly identified the issue as water damage to the main electrical box, and explained that it was an emergency situation. He returned the following week, exactly as discussed, despite bad weather, and efficiently moved the box, repaired the wiring, and provided temporary electricity until the next day. His work was exceptionally clean, efficient, and thorough, and he took the time to give us the right advice, possibly saving us from an electrical fire. We found him to be honest, knowledgeable, and true to his word. We would highly recommend Berardi Electricals to anyone looking for a trustworthy electrical work."
Lido beach NY
Lido beach NY
Lido beach NY
Response time7 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Handy Hubby
Handy Hubby
3.3(
43
)
Water Heater - Repair or Service

Serving Commack, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I called and happened to get Steve right away and since he was in the area he came right over. He examined the blind to determine if it could be fixed without a replacement piece and since it could he did the repairt quickly and efficiently. He was reasonable and very pleasant."
Stand Alone  Structure
Painted wood porch
Large deck and covered area
Large deck and covered area
Before - Pad removed

+5

Recommended by78%of homeowners
HomeServe of Long Island
2.5(
1
)
Water Heater - Repair or Service

Serving Commack, 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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FAQs for water heater repair or service projects in Commack, NY

Warning signs include fluctuating water temperatures, a pilot light that repeatedly goes out, unusual noises from the tank, or complete heating failure. You might also detect a rotten egg smell, indicating a potential gas leak, or notice water that never reaches the proper temperature. If your water heater is over eight years old and displaying these symptoms, the gas valve is a likely culprit. Professional inspection is recommended, especially if gas odors are present.

Water heater gas valves are not universally interchangeable. Each valve must match your specific water heater's make, model, and specifications. Important compatibility factors include gas type (natural gas vs. propane), BTU rating, connection types, and physical dimensions. Using an incorrect valve can result in poor performance, premature failure, or dangerous gas leaks. Always consult your water heater's documentation or a professional plumber to identify the appropriate replacement valve for your unit.

The Commack, NY homeowners’ guide to water heater repair or services

From average costs to expert advice, get all the answers you need to get your job done.