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

Avatar for Mahon Plumbing
Mahon Plumbing
4.6(
199
)
Water Heater - Repair or Service

Serving Charlestown, MD and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"This company is nothing other than excellent. A bit pricey, but you only get what you play for - and I got plenty. On Saturday afternoon, I found out that I needed a complete sewer line replacement. By late Sunday afternoon, I had one! The crew had to dig down about 10 feet to remove the broken line and then had to tunnel under my patio to get to the cast iron pipe in order to connect the new line. After the installation, the dirt was replaced, the area was seeded and covered with straw, and the sidewalks and parking lot were sprayed clean. Every single guy in the crew was friendly and knowledgeable. Special thanks to Gregg, Chris and Mike. I have recommended Mahon to friends and family and have already scheduled another job. If you need a good plumber, whether for something major or minor, I highly recommend Mahon Plumbing."
Tankless water heater installation
Tankless Water Heater Installation
Commercial drain cleaning
Sewer Line Video Inspection
Water heater replacement

+30

Response time7 hrs
Response rate100%
Recommended by92%of homeowners
Avatar for Horizon Services, LLC (MDE)
Horizon Services, LLC (MDE)
4.2(
13
)
Water Heater - Repair or Service

Serving Charlestown, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Your Trusted AC, Heating & Plumbing Company Since 1987 \n \nWhen you need AC, heating, or plumbing services, look no further than Horizon Services. For 35 years, we’ve been the trusted name in plumbing, heating, and air conditioning, offering an unmatched level of service at reasonable rates. Servicing Baltimore, Cecil, and Harford counties in Maryland, and Chester, Lancaster, and York Counties in Pennsylvania, we proudly serve a large range of local homeowners with comprehensive AC, heating, and plumbing services. Our expert technicians can carry out same-day services and next day installations to ensure that your home remains comfortable year-round. Whether you’re dealing with a serious plumbing problem, a broken air conditioner, or a heating issue, you can rely on Horizon Services for the high-quality service you need at the price you want.

Horizon Sales at table
Horizon tech under Sink
Horizon tech in Truck
Horizon tech in kitchen
Horizon tech in Crawl Space

+1

1 neighbors recently requested a quote
Recommended by100%of homeowners
F.H. Furr Plumbing Heating AC & Electrical
5.0(
5
)
Water Heater - Repair or Service

Serving Charlestown, MD and surrounding areas

Approved (Corporate)

Emergency services offered

Coastal living on Delaware’s Eastern Shore means your cooling and heating systems face constant challenges from salt air, moisture, and temperature swings. Whether you're by the beaches, inland, or up in New Castle, our HVAC specialists deliver solutions that stand up to local conditions while maximizing your home's efficiency. Plus, we tackle all plumbing and electrical issues when your home needs it most. Book your service with F.H. Furr today and enjoy quick, reliable comfort backed by licensed technicians.

5 neighbors recently requested a quote
Avatar for Small Town Plumbing
Small Town Plumbing
5.0(
1
)
Water Heater - Repair or Service

Serving Charlestown, MD and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"I needed teo toilets replaced. He replaced the one with expertise and was good about taking the toilet out without spilling any water throughout my home. Volunteered to do research on installing the other toilet due to pipe issues. Overall, great work. Would definitely use him again."
Electric Water Heater
Gas Water Heater
Gas Water Heater
Drain Line Replacement
Avatar for Air Temp Solutions
Air Temp Solutions
4.7(
59
)
Water Heater - Repair or Service

Serving Charlestown, MD and surrounding areas

In business since 2011

Emergency services offered

Credit card accepted

"I intially called for Heater Tune Up. The Technician (Jared) and I both heard the sound the Heater Blower was making and he was quick to diaginos the problem. He was upfront and honest about the Repair needed and the cost. Jared was quick, clean and efficient. I was very impressed. Great job Jared."
Recommended by91%of homeowners
Avatar for JamesIIMechanical Plumbing, LLC
JamesIIMechanical Plumbing, LLC
5.0(
11
)
Water Heater - Repair or Service

Serving Charlestown, MD and surrounding areas

In business since 2012

Credit card accepted

"We needed to replace a toilet, James went with us to Home Depot to select one. We now have a water efficient and higher seated toilet, which is great for aging relatives that can’t bend so easily anymore. I would definitely hire/contract him again!"
Recommended by100%of homeowners
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FAQs for water heater repair or service projects in Charlestown, 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 Charlestown, 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.