Top-rated water heater repair or service pros.

Get matched with top water heater repair or service pros in Hanover, MD

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 Water heater repair or service pros in Hanover

Avatar for Ehrhardt Brothers Quality Plumbing, Inc
Ehrhardt Brothers Quality Plumbing, Inc
4.9(
410
)

Serving Hanover, MD and surrounding areas

Approved

In business since 1992

Warranties offered

Small jobs welcome

"Saved by Ehrhardt Brothers Quality Plumbing (a.k.a ColumbiaPlumber)! (West of Baltimore) Our gas water-heater failed! It’s 30° outside! (Mar 2026). It was leaking, so we shut off the gas, the pilot, and the water inlet, to lessen damage if it burst. Ehrhardt offered a price based on our descriptions and photos, of course with caveats for anything unexpected. A water-heater costs a pretty-penny, but less than we expected. A fair price. They came the next morning, and had the water heater replaced in 90min. Impressive. But the manufacturer sent a unit with a bad pilot! Ehrhardt returned immediately and in 30min, they figured it out. They had a replacement part over-nighted. The next morning, in 30min, done. Hot water. AAAAAHHH :-) The problem was the manufacturer’s fault, and Ehrhardt handled it flawlessly: Excellent communication by Ehrhardt, priority attention to our problem, no excuses, just fast resolution. Great service staff. Perfect! "
Water Heater
Water Heater
Water Heater
Water Heater
Additional Photos

+40

Response time2 days
3 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Modern Plumbing Systems, LLC
Modern Plumbing Systems, LLC
4.9(
493
)

Serving Hanover, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"We had a leaking water heater and they came out the very next morning. Noah knocked it out in about 2 hours, carrying out the old water heater and installing a brand new one. He was professional, very courteous, and knew the job and how to do it. I definitely will go to Modern Plumbing Systems again for all of my plumbing needs. "
 Dirty Jobs
 We repair underground plumbing
 We install every kind of sink and faucet
 Modern Plumbing Systems on the scene
 Under Ground Plumbing

+15

Response time3 hrs
4 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Sila Heating, Cooling and Plumbing
Sila Heating, Cooling and Plumbing
4.6(
2,119
)

Serving Hanover, MD and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"They charged $98 to come give me an estimate for swapping our a shower valve cartridge, which was fine, but the pricing they provided was completely unreasonable, $1,000. They were unwilling to provide any detail for the price. I ended up buy the part myself for $30 and replaced it in 30 minutes."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

31 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
4.4(
597
)

Serving Hanover, MD and surrounding areas

Approved (Corporate)

In business since 1935

Free estimates

Emergency services offered

"Roto Rooter did an awesome job replacing my main line. They worked all day and night to get the job done. Quality work at a great price. Again a huge thank you to Roland, Brandon, Wayne, Umasis, Dillion, Cliff, Damon, and Thomas. Awesome job ! Tight spot and a deep trench. Happy Holidays ! Hope you get some rest."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

5 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Pohlman Plumbing Inc
Pohlman Plumbing Inc
4.6(
38
)

Serving Hanover, MD and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"The gentleman that work this business go above and beyond to make the best suggestions for they work required. This is the second time I have hired them. My sub pump went after and more rain was coming they came out with 2 hours to fix the problem. Extremely professional man. I will be er use any other plumbing business other than Pohlman. I highly recommend if you have a plumping issue."
Finished Shower
Finished Shower
Panoramic View
Vanity
Mid-replacement

+10

Response time8 hrs
Response rate87%
Recommended by86%of homeowners
Showing 1-10 of 23
FAQs for water heater repair or service projects in Hanover, 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 Hanover, 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.