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Top-Rated Tankless water heater repair pros in Chester - Updated Nov 2026

Avatar for DiBiase Heating & Cooling Company
DiBiase Heating & Cooling Company
4.8(
58
)
Tankless Water Heater - Repair

Serving Chester, PA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"I was extremely pleased with Diabiase HVAC and the work they did.  I researched many companies to replace my HVAC and hot water heater.  When I called Joe DiBiase, he immediately answered and was there that night to provide an estimate.  He was very good at listening to what we needed and providing an estimate for exactly what we wanted.  He worked with the Keystone HELP loan program and even provided the rebates and tax credit info that was available for each product.  His estimate was very fair and competitive.  I was able to schedule the work within a week or two (our current system was not broke, just very old).  He did quality work and cleaned up thoroughly after they were done.  Everything looks very neat too.  He was always professional and responsive to all my questions.  I can't say enough about this company, I would highly recommend them."
Air Conditioner Installation
Air Handler Installation
Water Heater
Furnace Installation
Heat Pump and Air Handler

+6

Response time1 day
4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Mattioni Plumbing, Heating & Cooling
Mattioni Plumbing, Heating & Cooling
4.5(
341
)
Tankless Water Heater - Repair

Serving Chester, PA and surrounding areas

Approved

In business since 1948

Emergency services offered

Warranties offered

"My initial contact with Mattioni was to simply schedule a winter check-up on the furnace in our new house. I knew the furnace, a/c, and water heater were all about 11 years old and could be in need of replacement. One month later, I’ve had Mattioni replace all three and also perform some smaller plumbing jobs after the annual healthy home plumbing inspection they offer as part of their contract program (which came free for one year after I had the furnace and a/c installed). They’ve done too much work for me to go into detail on every aspect of every job they did, but, on the whole I have been very impressed with Mattioni. Their customer service, quality, and attention to detail seems top notch. If you’re just comparing prices, they’re probably not the cheapest contractor to use, but if you factor in the quality of the service they’re providing, I think their prices are very good, which is why I rated them A in this regard. As with any big jobs like installing a furnace or water heater, small hiccups can occur - in fact, a week after the furnace was installed and I had the plumbing inspection, a small gas leak was detected. After the hot water heater was installed, one of the fittings in the pipe that leads into the water heater leaked a small amount of water and set off the alarm they installed. In my view, small hiccups like this are to be expected when new installations occur. Where Mattioni really shined was in their response to these problems. In particular, I would recognize Jared C., the plumber who did most of our plumbing work. He noticed the small gas leak and had one of the HVAC techs sent out within several hours to address it. He also returned the late the same day he had installed the hot water heater to correct the small leak that had resulted from a defective fitting. I found his attention to detail and willingness to help my wife troubleshoot over the phone and then return late after a long day and fix the small problem to be exemplary customer service. On the whole, I highly recommend Mattioni. If you’re just interested in finding the contractor with the lowest price, Mattioni is probably not going to be your preferred contractor (although they were willing to match lower quotes I received on the hot water heater install). If you’re looking for an HVAC or plumbing company that has responsive and friendly customer service, technicians that pay attention to detail and treat your house as your own, and will ensure that the job is done both correctly and with a high degree of quality, Mattioni seems to be one of the best I’ve used in my years as a homeowner. They will certainly be my go-to plumber and HVAC company for the foreseeable future."
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Response time2 days
14 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Done Right Today, Inc.
Done Right Today, Inc.
4.8(
619
)
Tankless Water Heater - Repair

Serving Chester, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Emergency services offered

Warranties offered

"Patrick and Adam came to my house to fix a leaking tankless electric water heater. They could not fix. I wasn't happy with the performance so Patrick recommended a gas vented water heater. Also installed a utility tub in my laundry room. I didn't even call done rite till maybe 11:00am. They came did all work and where out of here by 5:15. How is that for same day service. Jason came to assist. Cleaned up nice crew. I would highly recommend them."
Water Heater Install
Done Right Today
Parked at a customers house for repair work.
Done Right Today
AC Repair

+1

Response time7 hrs
828 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Delaware Plumbing Professionals
Delaware Plumbing Professionals
4.6(
641
)
Tankless Water Heater - Repair

Serving Chester, PA and surrounding areas

Approved (Corporate)

In business since 2014

Emergency services offered

Warranties offered

"I looked requested quotes from several plumbers to have our water heater replaced with a new tankless water heater. One of the companies just gave a quote for a after having me take photos of the existing water heater, and the quote was for simply a replacement, not what I wanted. Another company came out after several days and said it would be awhile before they could do it because they were so busy. This was two weeks ago. Still no quote. Jon from Delaware Plumbing Professionals was out the morning after the day we called and after looking at what we had, gave us a quote right then. We waited a bit for the other quotes, and decided to go with Delaware Plumbing Professionals. Jon and his apprentice, Nick, were here as scheduled and got the job done. The installation took quite a while, but is very nicely done. They covered the floor and were careful to not make a mess. Now I have lots of hot water. Once the installation was done, Jon showed me where all the shutoff valves and controls for the water heater were. I'm very happy with the job they did. I've used this company before for a faucet replacement on an Angie's List deal and was happy with it as well. It was one reason why I decided to go with them again. I really like that just before they arrive, you get both an email and a text message telling you they are on the way, and both include a photo of the person coming, so you know who to expect and are comfortable letting them in the door. It's just an added safety measure that adds to my satisfaction."
Additional Photos
Water Heater Special
Response time1 day
Response rate100%
12 neighbors recently requested a quote
Avatar for Ace Hardware Home Services
Ace Hardware Home Services
4.6(
678
)
Tankless Water Heater - Repair

Serving Chester, PA and surrounding areas

Approved (Corporate)

In business since 1966

Free estimates

Emergency services offered

"Good communication, very pleasant, quick service. Don was extremely helpful and easy to work with, even after i picked out the wrong type of replacement water heater and he had to return it! Would use again."
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+3

3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Horizon Services, LLC (DE)
Horizon Services, LLC (DE)
3.8(
1,316
)
Tankless Water Heater - Repair

Serving Chester, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Experience The Horizon Difference. \n \nOn-Time Service. Up-Front Pricing. And The Job Done Right and Clean the First Time. GUARANTEED! \n \nHorizon Services is the region's 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 remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee. \n

Horizon Tech under the sink
Horizon tech with homeowner
1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for WM Henderson Plumbing & Heating
WM Henderson Plumbing & Heating
4.2(
49
)
Tankless Water Heater - Repair

Serving Chester, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"The company called and scheduled a technician to come within 3 days, which met my needs. Technician PJ came as scheduled, diagnosed the problem, went and purchased the parts and had everything repaired in just a few hours. When he left, it looked like he'd never been here - just what i wanted!"
Bringing new water heater into house
Henderson Tech looking at water heater
Recommended by80%of homeowners
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