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TRUSTED BY FREDERICK, PA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon19
    Verified water heater services reviews

Top-Rated Water heater pros in Frederick - Updated Nov 2026

Avatar for H L Bowman
H L Bowman
4.6(
429
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Repair+1 more

Serving Frederick, PA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"They were very fast to respond to my call and were able to send someone within two hours. The replacement of the hot water heater went well. For the water pipes they use copper crimp fittings instead of soldering so it will be interesting to see how that holds up over the years. My only concern is how they ran the gas line. They use Gastite CSST which is fine, but the CSST is run so it goes downward then back up and then downward again before it enters black pipe that has a moisture trap. It seems to me that if there is any moisture it will end up in the CSST instead of the trap. In addition, there is a pretty good bend in the CSST right before it goes into the trap section. Also, Teflon tape was used on the all the joints instead of joint compound. I think I will get someone from a different company to come in and take a look at it."
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+6

488 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for G. Hager Plumbing Heating and Cooling
G. Hager Plumbing Heating and Cooling
4.5(
16
)
Tankless Water Heater - InstallWater Heater - Install or Replace

Serving Frederick, PA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!\n

After
After
Before
Before
York Furnace

+7

27 neighbors recently requested a quote
Recommended by44%of homeowners
Avatar for Montco-Rooter LLC
Montco-Rooter LLC
4.5(
1,068
)
Water Heater - Repair or ServiceTankless Water Heater - InstallTankless Water Heater - Repair+1 more

Serving Frederick, PA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

When plumbing problems disrupt your day, you need a local plumber who responds quickly, communicates clearly, and gets the job done right the first time. At Montco-Rooter Plumbing & Drain Cleaning, our plumbers are friendly, experienced, and fully equipped with the tools and technology needed to diagnose and repair a wide range of plumbing issues.\n\nWe understand that plumbing emergencies do not follow a schedule. That is why we are available nights, weekends, Saturdays, Sundays, and holidays, with no additional after-hours charges. Whether you are facing a sudden leak, a backed-up drain, or a water heater that stopped working, you can count on our team to arrive promptly and restore proper function to your plumbing system.

Gallery
19 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Valdel Plumbing
Valdel Plumbing
4.8(
184
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Frederick, PA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"A few weeks ago our gas hot water heater died. We had never used Valdel Plumbing before but were extremely impressed with the entire experience. We found them on Angie's list as being highly rated and there's a reason for it. We called them at 7:30 in the morning and by 11:30 AM had hot water and that's not exaggerating! Their specialist, Steve Ault was awesome and very knowledgeable. He quickly got to work dismantling the old unit. He even had a new heater and all the parts on his truck so there wasn't even a delay in waiting for parts or a new heater to be delivered. He also installed a drip pan, a pressure regulator and re-routed some of the exhaust piping for better venting. The price they charged seemed to be in line with the work performed. Obviously, based on our first time experience, we'd highly recommend Valdel and Steve for any residential plumbing work. Thanks Valdel!"
Additional Photos
Response time1 day
Response rate100%
7 neighbors recently requested a quote
Avatar for Patriot Heating and Cooling
Patriot Heating and Cooling
4.3(
81
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceWater Heater - Install or Replace - For Business+1 more

Serving Frederick, PA and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Fantastic experience. We had a 40 year old underground oil tank removed and a new tank installed. Bill and Rob are rock stars - totally competent and professional with a great "can do" attitude. I paid the price quoted and Joe even fixed the miscommunication with the Township over permitting on project day. I would definitely hire Superior again!!"
Response time1 day
116 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for ValDel Plumbing, LLC
ValDel Plumbing, LLC
4.7(
444
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+3 more

Serving Frederick, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Got an estimate for new water heater and installed the same day. Billy and his apprentice were professional and did a great job. The price was very good and I feel they really wanted to make sure we were happy with them. Would use again- thank you!"
Response time40 mins
370 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Marshall Services
Marshall Services
4.1(
133
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Repair

Serving Frederick, PA and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"Did conversion from Oil to gas and installed new water heater and boiler. Work was fantastic, easy to do business with, and was a great help in the entire process from beginning to end."
Heatpump interior
heatpump exerior
Gs Funace Installation
Air Conditioning Installation
Air Condition Installation

+2

Response time10 mins
141 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Progressive Construction Group
Progressive Construction Group
4.8(
46
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For BusinessWater Heater - Repair or Service+1 more

Serving Frederick, PA and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

"Fernando and his team were incredible. I had an emergency at one of my properties and needed urgent assistance after hours. Fernando came out personally with his crew they found and corrected the issue rightaway. I also had them change four 90 gallon water heaters at two of my properties and they did an incredible job. What stands out with Fernando and his crew is how neat they work, how professional and knowledgeable they are, and they also left all three of my properties spotless cleaning up after themselves. I can't be happier with the work I received from them and now I have them on speed dial for all of my plumbing work."
Main storm line
Main storm line
Main storm line
Main storm line
Main storm line

+60

Response time7 hrs
Response rate90%
1 neighbors recently requested a quote
Avatar for Horizon Services, LLC (PA)
Horizon Services, LLC (PA)
3.9(
1,722
)
Water Heater - Repair or ServiceTankless Water Heater - InstallTankless Water Heater - Repair+1 more

Serving Frederick, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Horizon Services, Inc., is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizons Services, Inc., remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners. \n

Plumber in Kitchen with Customer
Horizon Plumber crawl space
Horizon Plumber under sink
4 neighbors recently requested a quote
Recommended by89%of homeowners
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Water Heaters FAQs, answered by experts

Homeowners insurance may cover the repair or replacement of a water heater if it's damaged by a covered peril, such as a fire or a burst pipe. However, policies typically do not cover repairs or replacement needed due to normal wear and tear, old age, or lack of maintenance. For these issues, a home warranty or a manufacturer's warranty may provide coverage. While the policy might not pay to fix or replace the malfunctioning appliance itself, it often covers the cost of water damage restoration caused by the faulty water heater. Always check with your insurance provider to understand the specifics of your policy.

The standard copper wire gauge to use with any 30-amp circuit is a 10-gauge wire. The National Electric Code specifies a 10-gauge wire with appliances like water heaters running on 30 amps. If you try to use a smaller gauge wire, such as a 12 gauge, with a 30-amp breaker, you run the risk of the wire overheating and melting or causing a fire. Because of the safety hazards, the gauge of the wire is not an area to try to cut costs when connecting a 30-amp breaker to a water heater.

You should replace your gas water heater when it’s reached the end of its lifespan, which is a maximum of 12 years in most cases. If your unit is over a decade old and showing signs of inefficiency, leaks, or frequent malfunctions, it may be time to replace your water heater. Research how to best maintain your gas water heater to help extend its lifespan.

The size needed for your expansion tank is determined by the size of your home's water heater. Expansion tanks are available in 2-gallon and 4.5-gallon sizes. A 2-gallon tank will be appropriate for water heaters up to 50 gallons. An adequately sized tank should have a volume that equals 2% to 5% of the water volume within the system. A plumber can evaluate your home's water pressure, water heater size, and other factors to provide suggestions for picking out the best expansion tank.

You can use multiple tankless water heaters, but that doesn’t mean you should. Adding multiple tankless heaters adds considerable cost to your home in both parts and installation costs. Also, you’re adding many more points of failure in the system, making plumbing issues harder to diagnose. More heaters mean more maintenance, and insurers may want a word regarding the increased risk of water damage. A single, larger unit makes more sense in most situations.

The Frederick, PA homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.