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Find Water heater repair or service pros in Waltham

Floros Plumbing and Heating
5.0(
376
)

Serving Waltham, MA and surrounding areas

Approved

Emergency services offered

Customers say: Quality work

"I hired this company to replace a 75-gallon gas water heater, and the experience was excellent. Scope of work: Removal and disposal of existing unit Installation of new Rheem 75-gallon gas water heater Reconnection of gas, water, and venting The team was prompt, professional, and clearly experienced. They provided a clear explanation of the installation process, answered questions directly, and completed the work efficiently. I valued their use of text messaging to arrange the work, as it was most efficient and allowed me to share photos of the work area so they could plan the installation in advance. The installation was clean and well-executed, with attention to proper setup and safety considerations. Pricing was transparent and consistent with the scope of work. There were no surprises. Overall, this was a high-quality, professional installation. I would recommend them without hesitation."
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+3

Response time1 day
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Genove Oil & Air Co
Genove Oil & Air Co
4.8(
191
)

Serving Waltham, MA and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"We were very pleased with the work that the Genove technicians did. They removed our 40-year-old gas boiler and associated water heater and replaced it with a new system. They tested the new system carefully, put explanatory tags on all of the relevant pipes and faucets, and cleaned up well. The team members were polite and worked hard. We had similarly good experiences when Genove technicians came to repair our central AC system. They were knowledgeable and efficient, got the system going again, and the price was fair. We continue to use this company for heating and AC repairs."
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+2

Response time1 day
13 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for H L Bowman
H L Bowman
4.7(
387
)

Serving Waltham, MA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"Exceptional service from the initial diagnosis to repair, superb team. I appreciated everyone's thoroughness, willingness and honest business tactics. They provided a safe environment for me to ask questions and we explored all options. Ultimately, Joshua, sealed the deal by being caring and understanding. His expertise showed but most importantly his work ethics and integrity was felt. Many thanks to the whole team Brett, Joshua, Jason and Peter delivered Top notch service. Lastly, the communication was A+. Loved receiving text messages with photo id's, true professionals. Highly recommend! You won't be disappointed!"
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+6

329 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.7(
4,793
)

Serving Waltham, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"Sila saved me!! Of course right when fall is rolling around my heater broke! The job was quick and affordable! Their amazing customer service is also a huge factor why I will be using Sila again, especially Amy R. In management!"
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+6

Response time2 days
56 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Heavy Doody Plumbing & Heating
Heavy Doody Plumbing & Heating
4.9(
19
)

Serving Waltham, MA and surrounding areas

Approved

In business since 2013

Emergency services offered

Small jobs welcome

"I would recommend them and will use them again. On time, very professional and got the job done in a timely manner. Pleased with the cost of the repair."
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+26

Response time4 hrs
4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for RezySave Plumbing and Heating
RezySave Plumbing and Heating
5.0(
13
)

Serving Waltham, MA and surrounding areas

Approved

Warranties offered

Credit card accepted

Offers commercial services

"Had mike and zach out to replace my gas water heater. They were on time, professional, and courteous of my home. They even wear shoe covers and use drop mats to make sure the floors dont get dirty! Excellent customer service at a reasonable price"
Water heater install
Hybrid water heater
258 neighbors recently requested a quote
Avatar for Local Plumbing & Heating
Local Plumbing & Heating
5.0(
9
)

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Warranties offered

"This is my sixth time using the service from Andrew at Local Plumbing and Heating. He is quickly available, efficient and thoughtful. He is trustworthy: I know he will take care of everything I asked for and thinking ahead for great ideas. I used his service for major home projects and I strongly recommend him for everything: from water heater tank replacement to gas lines installations."
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+9

1 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Precision Plumbing & HVAC, LLC
Precision Plumbing & HVAC, LLC
5.0(
23
)

Serving Waltham, MA and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: Quick response

"I hired Marcin & his team at Precision Plumbing & HVAC for multiple projects. First to handle all plumbing in a gutted bathroom renovation, then to replace an old gas water heater and furnace with a new high efficiency combi boiler. I've since recommended them to friends and family and would absolutely do so again."
Response time2 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Gentille Plumbing and Heating
Gentille Plumbing and Heating
5.0(
25
)

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"This was a relatively small water heater repair, and Ryan did an outstanding job. He responded immediately to my request, provided a reasonable quote, was polite, professional, knowledgable, and friendly to deal with. Will definitely hire again if needed. "
Response time6 hrs
Response rate94%
Showing 1-10 of 30
FAQs for water heater repair or service projects in Waltham, MA

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 Waltham, MA 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.