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

Avatar for Fred and Son Plumbing
Fred and Son Plumbing
4.8(
68
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved

In business since 1990

Free estimates

Customers say: True professional

"Service was completed as expected. Fred came with his son promptly in the morning. He first assessed the issue and made a recommendation for the repair. The work seems to be of good quality. Final price was just as quoted. Fred was very professional and quite personable. Overall I’m happy with their work and excellent customer service. Highly recommended! I will going to Fred for my future plumbing needs."
Recommended by100%of homeowners
Avatar for Beacon Home Services, Inc.
Beacon Home Services, Inc.
4.6(
2,092
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Jamie our plumber arrived right on time & very efficiently performed three jobs for us. These included replacing a kitchen disposal, installing a vanity water faucet, flushing the water heater. He patiently explained each task and stayed until all were completed. We were so pleased we've entered into a service contract with Beacon Home Services."
Beacon Home Services - Electric, Plumbing, Drains
New water heater replacement
Our Team
Electrician - Installing 2 new electrical panels
Beacon Home Services - Electrician

+31

Response time30 mins
Response rate100%
575 neighbors recently requested a quote
Avatar for Pipeworks Plumbing, Heating, and Air
Pipeworks Plumbing, Heating, and Air
4.8(
622
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved

In business since 2016

Emergency services offered

Small jobs welcome

"Johnny was very professional in performance of the hot water heater installation and helpful in answering all of my questions. Highly recommend the company. Cheers"
Lennox 14ACX (Photo 1)
Lennox XC16
Trane Heat Pump 5
Its the details that count
Lennox 14ACX (Photo 2)

+66

Response time2 hrs
3 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Remedy Plumbing and Drain Cleaning
Remedy Plumbing and Drain Cleaning
4.8(
78
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Mr. Rema arrived on time Sunday morning to update my water heater. He installed an expansion tank, duct work and replacing the piping to the thermostat on the water heater. He did an excellent job and took his time. Mr. Rema also went to the local hardware store twice to pick up the material that was needed. The only reason I didn't give him an A was because he quoted me a price at the beginning and then went done on the price and then tried to go back up to the original quoted price. After talking with him he decided to keep the price at the lower amount that he quoted."
Additional Photos
Additional Photos
9 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for GAC Services
GAC Services
4.7(
295
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"GAC services was able to come out for a same day trouble shooting appointment. Jim S arrived on time and was very courteous and professional. He was able to quickly identify the problem with the registers and dampers and able to get warm air flowing to the otherwise very cold areas of the house. In addition, Jim was able to recommend some additional services that would help me achieve the desired evenness of temperature such as an additional return and humidifier for the home. Great experienced master certified technician!"
Additional Photos
6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for McCarthy Services MD
McCarthy Services MD
4.2(
384
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Emergency services offered

"Mr. Brian Langford made all the arrangements with the installation of our gas hot water heater from Lowe's via McCarthy plumbing. He was extremely helpful,patient, professional and available to answer all questions. Due to his approach to his work, we will be working with both companies in the future. Only concern I have is the warranty between Lowe's and AO Smith Hot water heaters. Once the heater is installed, Lowe's severs ties. If there is a problem with the hot water heater, you cannot return it to Lowe's although it was purchased through them, this is clearly stated on the Hot water heater in bold writing."
Installing a new A/C system.
Recommended by87%of homeowners
Avatar for DAY & NIGHT PLUMBER LLC
DAY & NIGHT PLUMBER LLC
4.8(
93
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Marin the tech was great he was friendly and took his time to explain what happen with my water heater and how I could prevent the problem from happening again. I would differently ask for him again to service my water heater. Thank you Marin!!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Response time11 hrs
5 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Mr. Rooter of Maryland
Mr. Rooter of Maryland
4.3(
1,100
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved

In business since 1968

Free estimates

Emergency services offered

"A1 Tech Stephen Loyd with Mr. Rooter Plumbing provided excellent service in removing the old water heater and installing the new water heater. He was professional and provided awesome customer service. Well done!"
Mr. Rooter of Baltimore fleet
Response time50 mins
17 neighbors recently requested a quote
Recommended by83%of homeowners
Markool Heating & Cooling, LLC
4.7(
18
)
Water Heater - Repair or Service

Serving Potomac, MD and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Just started working with Markool this summer and they have been fantastic! When I need service, they are so fast and every person we have interacted with has been polite, knowledgeable and personable. We unexpectedly needed to replace our system during a heat wave and they were super. So responsive and quick. I would highly recommend Markool for all of your HVAC needs!"
Response time1 day
16 neighbors recently requested a quote
Recommended by94%of homeowners
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FAQs for water heater repair or service projects in Potomac, MD

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 Potomac, MD 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.