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TRUSTED BY WATERLOO, NY HOMEOWNERS

  • Average homeowner rating star icon3.9
    Average homeowner rating
  • Verified reviews icon10
    Verified water heater services reviews

Top-Rated Water heater pros in Waterloo - Updated Nov 2026

Avatar for Halter Plumbing & Water Works
Halter Plumbing & Water Works
4.9(
99
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Waterloo, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"John stopped by last week to give us an estimate to install an outdoor water faucet off of the existing house plumbing. We accepted his price and set a time for installation the following week (today, 7-30-2019). The work was done in a timely professional installation. John is very personable, knowledgeable, and polite. I will keep him in mind for all of our plumbing work. Patric & Cindy Amarando"
Response time6 hrs
Response rate87%
4 neighbors recently requested a quote
W. Gray Service-Repair-Installation, LLC
4.8(
72
)
Tankless Water Heater - RepairWater Heater - Repair or Service

Serving Waterloo, NY and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"He came to our house to review the problem. He has not replaced the furnace yet (our choice to wait a bit) but his response was immediate and he was professional at our home and with the provided quote."
Response time3 hrs
Response rate100%
Recommended by96%of homeowners
Avatar for Frank N Frank Mechanical Contracting
Frank N Frank Mechanical Contracting
5.0(
5
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair - For Business+3 more

Serving Waterloo, NY and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

Thank you for considering hiring us for your project! At Frank N Frank Mechanical Contracting we pride ourselves on quality work, integrity and competitive pricing. We believe in giving our absolute best, no matter how big or small your project. \n \nWe are experts in our trade, and we will keep you educated and informed throughout the completion of your project. We treat your property like it's our own, with the utmost respect, just like we would our own family! \n \nAs the owner, my aim is to earn a 5-star review on the completion of your project. So, please let me know if at any time we are not living up to earning your perfect 5-star review. \n \nWe look forward to earning your business, so please ask us for references!

1 neighbors recently requested a quote
Astar Heating & Air Conditioning Inc
4.8(
138
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Waterloo, NY and surrounding areas

In business since 1976

Free estimates

Emergency services offered

"After an extensive process of having different contractors evaluate my home & submit their estimates for the installation of a Bosch tankless boiler/water heater combination unit as well as new baseboard heating, I selected AStar Heating & Cooling. Their staff impressed me from start to finish. Initially, I met Aaron who provided a thorough explanation of how the work would be done, offered other options that I did not know of or considered at the time, and provided a fair estimate that was similar to most of the other contractors. Next, when the time came for the projects to be completed, the technicians, Robert & Trevor, were on point. They always arrived in a timely manner & started working right away. They worked efficiently & quickly to get the projects done in the time frame promised. However, they did not rush, they took pride in their work & made every effort to make sure the work was completed neatly & done properly, as they thoroughly tested out the systems to make sure their were no issues/problems in their setup & performance. They also thoroughly answered my questions about the installation of the new systems as they went about their work. At the end of each workday, they made sure to clean up the job site & were very mindful in not dirtying my new floors by wearing plastic booties whenever they had to walk over them. The Bosch tankless water heater/boiler combination unit has been working without a hitch. I barely notice the difference in the time lag of receiving hot water in comparison to the old 40 gallon tank water heater I previously used. Overall, I highly recommend AStar Heating & Cooling. High quality work done high quality professionals. All of them put my mind at ease on what was a very necessary home improvement project."
Red Carpet Treatment
Furnace
AC
Recommended by98%of homeowners
Avatar for Royal Plumbing & Heating Services
Royal Plumbing & Heating Services
4.7(
174
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For BusinessWater Heater - Repair or Service+1 more

Serving Waterloo, NY and surrounding areas

In business since 2009

Emergency services offered

Credit card accepted

"This company was extremely responsive to my initial request and got back to me within minutes. My water heater was replaced on time and with no problems whatsoever. They traveled A significant distance to get to my town And kept good communication with me"
Water Heater Install
Water Heater Install
Water Heater Replacement
Water Heater Replacement
Water Heater Install

+23

Response time8 hrs
Recommended by94%of homeowners
Avatar for Payne Plumbing, Heating and Air Conditioning, LLC
Payne Plumbing, Heating and Air Conditioning, LLC
4.7(
17
)
Water Heater - Install or ReplaceWater Heater - Repair or Service

Serving Waterloo, NY and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Chris is very organized and easy to work with. He was able to schedule our maintenance visit at our convenience. We appreciated his checking our water heater and he was able to repair a potential leak. We look forward to being a regular customer by signing up for his Priority Partner Plan."
New Steam Boiler
New Toilet
Response time9 hrs
Recommended by93%of homeowners
Areti Plumbing Heating and Cooling
4.4(
40
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For BusinessWater Heater - Repair or Service+1 more

Serving Waterloo, NY and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"We hired Areti to completely gut and remodel our master bathroom, as well as repair several other aspects of our home (replacing the foyer tile and swapping the closet flooring from carpet to hardwood, installing a new water pump system, resealing skylights, etc). When we initially researched Areti, we learned that it is a young business, but I would encouraged people not to worry about that because they know what they're doing and their work is good. Throughout the process they always emphasized they wanted to make everything exactly the way we wanted it so we would love it--and we do LOVE it! ALL of their employees were VERY friendly and approachable, so I was at ease having them in our home when we weren't there. They were also very prompt at getting back to us with any questions/concerns via phone, text, email, and app. They were always on time when we had an appointment face to face, and we especially appreciate how quickly they came out to fix our water pump when it failed (and this was not part of the original scope of work; but they tackled the extra work without a problem). The quality of their work seems good, however there were a few things that weren't done quite right the first time and that they had to re-do. They do warranty their work, so it didn't cost us more for those hiccups. And Josh and Isaac (who managed our project) seem very thorough in checking the work after its done. Josh also looked over our whole house, basement to roof, and made some suggestions for minor repairs we could do on our own to make our house more functional, safe, and beautiful. We would definitely hire them again for our future home projects. We are very, very pleased with all the work Areti did on our home."
Response time1 day
Recommended by100%of homeowners
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Water Heaters FAQs, answered by experts

While possible, professional assistance is recommended to ensure compliance with local regulations and avoidance of avoidable risks.

Several signs indicate your water heater may be failing or in need of replacement. Key indicators include:

  • Age: A water heater older than ten years is approaching the end of its typical lifespan.

  • Water Quality: If you notice rusty or discolored water from your hot water faucets, or a foul odor similar to rotten eggs or sulfur, it can signal internal corrosion.

  • Unusual Noises: Banging, rumbling, or popping sounds from the tank often mean sediment has built up, causing the unit to overheat.

  • Leaks: Any water pooling around the base of the tank or visible leaks are clear signs of failure.

  • Performance Issues: A decline in performance, such as water not getting hot enough, taking longer to heat up, low water pressure, or decreased efficiency, suggests the unit is struggling.

  • Visible Damage: Obvious rust and corrosion on the exterior of the tank can indicate a more serious internal problem.

While these signs often point to replacement, some issues may be fixable. It's best to consult a professional plumber to diagnose the problem before investing in a new unit.

It is very difficult and dangerous to install your own water heater, so we strongly recommend against tackling this as a DIY project. Not only will you need to wire your water heater, but you’ll also need to connect plumbing to the intake and outlet. Sweating copper pipes and connecting wiring properly are skills most DIYers don’t have, and even if you do feel confident you can do it, working with water and electricity always leaves the potential for electrocution. Hiring a local water heater installer is well worth the investment.

Water expands when heated and also when freezing. When water is heated, it expands by around 4%. For a full water heater, this is one of the main reasons malfunctions occur—the hot water has nowhere else to go but out. Due to the constant expansion and reduction in volume, it’s recommended (required in most places) that an expansion tank be installed.

Every city and state will have its own set of installation codes and laws. Some won’t require you to obtain a permit before replacing your water heater, though we recommend you do, regardless of the local codes. On the other hand, some cities and states might require secondary permits for plumbing and electrical work related to the installation. Check with a local water heater installation company and local building codes to confirm which permits are required and what the specific laws are.

The Waterloo, NY homeowners’ guide to water heater services

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