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

Barnagat Plumbing Inc
4.7(
212
)
Tankless Water Heater - Install

Serving Massapequa, NY and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Barbara was phenomenal. A true professional dedicated to her craft and excellent customer service. We had a custom toilet that stopped working, and a leaky faucet in the same bathroom. She reached out right away after requesting a quote through Angi, and she came the same day. At first she told us that the toilet required a part she’d have to order, and after fiddling with the faucet, recommended the 15 year-old fixture be replaced. I offered to purchase it from Home Depot or Lowe’s she agreed to come back to replace the old one and install it in 3 days. After she left, she called me back and asked if she can return because she figured out how she could try to fix the toilet with existing parts she had in her truck. She did it. The toilet is functioning better than it did before the problems began! She then returned 3 days later as promised to replace the bathroom faucet, a complicated project because of the cabinet structure that she stuck with and skillfully completed. On a personal note. We bonded once I asked about the name of the company, which her father, who founded the company, named after his Navy ship. My dad also served in the Navy. Barbara kept me regularly posted about when she’d arrive and the progress of the work. She was true to her word. I’d gladly paid her for her excellent work."
Response time1 day
Response rate100%
Recommended by95%of homeowners
On Time Piping and Heating LTD.
4.7(
105
)
Tankless Water Heater - Install

Serving Massapequa, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Warranties offered

"So I had a VERY old Janitrol gas boiler which was actually working fine up until a few weeks ago when it started leaking a little bit of water intermittently. Then the last week the leaking was sow yet much more constant. The leaking was coming from under the cement platform it sat on, so wasn t 100 percent sure it was the boiler. Until the recently installed (by another company) automatic water feeder started feeding about every 3 hours. Went on HomeAdvisor, On Time Piping and Heating was one of the first companies to pop up. Received a call from Matty almost immediately. This was a Saturday night, and he stopped by my house the next morning, determined that it was indeed a leaking boiler that needed to be replaced. Matty and his crew came out on Tuesday morning, arrived at 7am, and by approx 10am had a new working Williamson boiler. About 3 hours later their electrician came out and did the finishing touches. Their electrician noticed an issue with the previously installed automatic water feeder, and Matty had two of his team members come out two days later to put in a new electronic automatic water feeder which is much more compatible with the new boiler. Now everything is working great and much more efficiently. Matty and his crew are like family. Work great together, busting each other s chops in a friendly manner while quickly and effectively completing the job at hand. Very customer friendly, knowledgeable, informative, and they do not talk down to you. I recommend them to anybody who wants top notch, quick, and effective work done on their home heating system. Keep up the great work fellas!"
Response time4 hrs
Response rate93%
9 neighbors recently requested a quote
Avatar for Integrated Plumbing & Heating
Integrated Plumbing & Heating
4.7(
69
)
Tankless Water Heater - Install

Serving Massapequa, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Credit card accepted

"Roberto and his company Integrated Heating did an excellent job on the replacement of my father in lawâ s 40 year old furnace and hot water heater, including a new chimney liner that required a new exit via a very solid foundation (no small task)! He was courteous, prompt, cleaned up all, and offered the most competitive price of the seven quotes we received for the work requested. I would highly recommend his company for your furnace and hot water heater replacement needs! Thank you Integrated Heating once again."
Response time12 hrs
13 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Elite Piping Solutions
Elite Piping Solutions
4.8(
49
)
Tankless Water Heater - Install

Serving Massapequa, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Billy and his are absolutely professional and great to work with. We reported issues with our hot water heater. Billy came over on Easter Sunday morning to investigate. The following day, him and his team came and changed the heating elements. He treated us as top priority customers. I recommend him and his team for your piping needs!"
Response time6 hrs
Response rate90%
12 neighbors recently requested a quote
Avatar for Varsity Home Service Company, Inc.
Varsity Home Service Company, Inc.
4.5(
245
)
Tankless Water Heater - Install

Serving Massapequa, NY and surrounding areas

Approved

In business since 1962

Free estimates

Emergency services offered

"From the moment Ryan came through the door We felt that we were in good hands!! From Ryan, Vedil and Mike they did a great job installing our new hot water heater!! No issues at all !! I highly recommend these pros to anyone and will use them again !! Thanks guys !!"
Shower Fixtures
Installation
Truck
Best of L.I. Winner 2024
Angi 2022 Super Service Award Winner

+86

Response time11 hrs
118 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Excellent Plumbing & Heating
Excellent Plumbing & Heating
4.9(
28
)
Tankless Water Heater - Install

Serving Massapequa, 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 Premier HVAC Services
Premier HVAC Services
4.3(
229
)
Tankless Water Heater - Install

Serving Massapequa, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"I had a great experience with Premier HVAC replacing my old and leaking water heater. I was impressed that they were able to respond quickly and start working on the same day as my call, especially given the severely cold weather and other plumbers being busy replacing freezing pipes. The plumber was able to work with my very tight kitchen space and narrow hallways, and without having to remove the countertop in my kitchen. I am satisfied with the installation and would definitely consider Premier HVAC for future plumbing needs."
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+38

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Tankless Water Heater - Install

Serving Massapequa, 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."
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
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