Top-rated water heater repair or service pros.

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

Avatar for Jimmy Gusky Heating & Air LLC
Jimmy Gusky Heating & Air LLC
4.3(
373
)

Serving Olney, MD and surrounding areas

Approved

In business since 1996

Emergency services offered

Credit card accepted

"Excellent. Two separate teams came; one for AC and Furnace; second for Tankless hot water heater; Minor toilet repair also done at no extra charge, including a follow up service call to install new toilet flush handle, also at no charge."
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
9 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Fred and Son Plumbing
Fred and Son Plumbing
4.8(
67
)

Serving Olney, MD and surrounding areas

Approved

In business since 1990

Free estimates

Customers say: True professional

"Fred is simply the best! Not only is he a superb plumber, but he is a wonderful person. He genuinely cares about his customers and wants to provide the best service possible at a fair price. We feel very fortunate to have Fred and his son as our go to plumbers!"
Recommended by100%of homeowners
Avatar for Ehrhardt Brothers Quality Plumbing, Inc
Ehrhardt Brothers Quality Plumbing, Inc
4.8(
432
)

Serving Olney, 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
Recommended by96%of homeowners
Joseph plumbing & drain
4.9(
149
)

Serving Olney, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Kan and Puia arrived the same day as my call and completed an evaluation of services needed, in my case mostly a replacement hot water heater. They came back the next morning, put down drop cloths, did the work and made a suggestion for something that needed attention that we hadn't noticed. Very pleasant people to work with. Work was completed in good time with great attention to detail at a good price. It's good to have Kan in my contacts. I will definitely call him in the future. Thanks, Kan!"
Response time6 hrs
Response rate99%
6 neighbors recently requested a quote
Avatar for McCarthy Services MD
McCarthy Services MD
4.2(
382
)

Serving Olney, 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 by88%of homeowners
Avatar for DAY & NIGHT PLUMBER LLC
DAY & NIGHT PLUMBER LLC
4.8(
90
)

Serving Olney, 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 time10 hrs
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Mr. Rooter of Maryland
Mr. Rooter of Maryland
4.3(
1,081
)

Serving Olney, 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
14 neighbors recently requested a quote
Recommended by84%of homeowners
...
Showing 1-10 of 179
FAQs for water heater repair or service projects in Olney, 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 Olney, 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.