Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in Uniondale, 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 installers in Uniondale

On Time Piping and Heating LTD.
4.8(
92
)

Serving Uniondale, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Warranties offered

"Ontime Piping And Heating is on TIME and on POINT! I was in an extremely bad situation. I needed a new boiler and hot water heater. Home ownership is new to me, and I had no clue as to where to start. So, I just started googling and I had several so called â expertsâ come by and give me quotes any where from $8,000 to $14,000, and I was told so many different stories. Well, I decided to go on Angi (formerly known as Angieâ s List) and that is how I came across Ontime Piping And Heating. Matty (Matthew Mirabile) walked in and assessed the situation in absolutely no time. He was very professional, knowledgeable and confident. He took his time explaining what was needed and made sure I understood. He made his offer, which was very fair, and I did not feel like he was trying to take me for a loop because I was a woman. By the time he left I knew this was the guy for the job. I even had some one offer to do the job for $500 less, but I decided to stay with Ontime Piping And Heating because I had already given my word and after meeting with Matty I just knew this was the right decision. It was the best decision I made. Matty sent his guys in and handled the entire job in one day. Matty handled every single aspect of the entire process from taking out the old equipment and discarding to purchasing and installing (top quality equipment I must say there were no shorts there) the new equipment to the electrician. It was definitely a team process, and every single member of the team was knowledgeable, confident, professional and pleasant. The area was cleaned up and the new equipment is sitting nice and pretty. Ontime Piping And Heating has a customer for life. I will most definitely recommend Ontime Plumbing And Heating to anyone and everyone. This day and time finding these types of businesses with some type of integrity is hard to come by. Matty is definitely old school and a businessman of his word. Ontime Piping And Heating deserves a professionalism, Integrity and AWESOME job AWARD! Thank you Angi and thank you Ontime Piping And Heating!"
Response time4 hrs
Response rate92%
1 neighbors recently requested a quote
Avatar for Integrated Plumbing & Heating
Integrated Plumbing & Heating
4.8(
64
)

Serving Uniondale, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Credit card accepted

"This team installed an oil fired boiler last month. I didn't want to give a review until our oil company said it passed their inspection which it did. They came promptly. It took all day to install. They got it working. We did have a hiccup but they came and took care of it. I was nervous to use them but so glad we chose them. Roberto and his team were great. They know their stuff. So yes I highly recommend them. See the old and new."
Response time10 hrs
6 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Varsity Home Service Company, Inc.
Varsity Home Service Company, Inc.
4.8(
197
)

Serving Uniondale, NY and surrounding areas

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
139 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.8(
56
)

Serving Uniondale, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Tom was terrific....repaired boiler....cost reasonable.....explained everything so clearly so that even this 88year old understood it....experience with company from start to finish was a pleasure"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time3 days
8 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for 5DS Plumbing and Heating
5DS Plumbing and Heating
4.7(
38
)

Serving Uniondale, NY and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"I call this company a guy name Paul picked up and then he send a guy name Raj. The guy told me $400 for the fix and tone up for my steam boiler. Then he didn't even drain the water and clean the boiler. Next day the boiler was flooded and I call them and for next 2 days they kept telling me they are coming and never showed up! So I had to get some other guy to fix the issue. *This company overcharge you and don't do the job properly and leave you hanging*"
Response time2 hrs
Response rate94%
Recommended by86%of homeowners
Avatar for Premier HVAC Services
Premier HVAC Services
4.7(
185
)

Serving Uniondale, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"I cannot highly recommend Premier Services, enough! MY 29 year old UTICA Boiler kicked the bucket, and so Boris came the very next day to give me a consultation. My gut feeling told me that they are what I required in changing my boiler. He got me a "Williamson", and the technician, Slava, Oleg, and a 3rd gentleman, were very professional, knowledgeable, & honest. They arrived on time, were very polite & clean, They explained exactly what I needed to do to maintain my boiler in great working order. There price was very reasonable, & I even took the annual maintenance agreement, so that I can have piece of mind. THEY HIT IT OUT OF THE PARK!!! I am now their NEW Client for ALL my HVAC & pluming needs. Thank you Soooo much Priemier Services. "
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+38

Response time1 day
7 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Raid Construction LLC
Raid Construction LLC
5.0(
13
)

Serving Uniondale, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Amazing experience from start to finish! The team was professional, efficient, and paid great attention to detail. My bathroom turned out even better than I expected. Highly recommend!"
Response time3 hrs
Response rate90%
3 neighbors recently requested a quote
Showing 1-10 of 19

The Uniondale, NY homeowners’ guide to tankless water heater installations

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