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

Avatar for Pompa Plumbing Group LLC
Pompa Plumbing Group LLC
5.0(
13
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

Approved

In business since 2019

Emergency services offered

Credit card accepted

We Are Water Heater Installation, Repairs, & Maintenance Pros Serving All Of Florida \nPompa plumbing specializes in water heater repair and water heater replace. We are Rheem, Rinnai, and AO Smith certified technicians, but we service all water heater manufacturers. \n \nPompa Plumbing provides fast, reliable water heater replacement and water heater repair in all areas of Florida. \n \nWe offer Senior & Military Discounts Warranties and other Competitive Prices.

Rinnai Tankless
Rinnai Tankless
Rinnai Tankless
Commercial Plumbing
Tankless Heaters

+10

14 neighbors recently requested a quote
Avatar for Bill Fenwick Plumbing, Inc.
Bill Fenwick Plumbing, Inc.
4.5(
790
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Brenden was our tech. He showed up within 45 of our call in. Polite, professional and highly competent. Within an hour, he had completed the repair, new part installed and was done. I had my water heater back up and operational. Thanks Fenwick!"
Bill Fenwick Coupons
$79 Full System Tune-Up + 1 Lb. Refrigerant
Fenwick Plumber with homeowner Tub
3 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for CGC Home Services
CGC Home Services
4.2(
54
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"My husband and I were referred to CGC Water by close friends. Everything from the first appointment with the sales man to having the project complete felt very intentional and customer focused. They took water samples, listened to what we wanted, answered all of our questions (we had plenty) and set us up with everything we needed. I was really happy that they got us on the schedule quickly, we did not have to wait 4+ weeks that other projects have taken. The install was very thorough and even though nobody will see the equipment the install spot was left clean and the piping all looks nicely hung. That may not matter to everyone but I noticed. Before leaving, the technician made sure all equipment was working and retested the water to make sure it meets our expectations. Now we have a Kinetico whole house water softener, and a Kinetico RO drinking water system. I am so glad we went with the Kinetico system. I can tell a difference in everything! I dont get spots on the dishes anymore, my towels dont smell funky after washing them and having good water has even helped with dry skin. I love the drinking water too! I really can tell a difference from other drinking water and I always fill my water bottle up at home before leaving the house because other water just does not compare. I really appreciate the follow up as well, we opted for the scheduled salt deliveries and filter changes so we dont have to worry about it as much. I highly recommend CGC and the Kinetico water equipment."
Water softener and iron/odor filter
Water softener
Water softener
2 neighbors recently requested a quote
Recommended by82%of homeowners
Duval Plumbing
4.9(
14
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Great small company. Within a couple of hours from calling and advising of what I needed, Claude was at my home with a brand new water heater and ready to install. Quick and quality work. Impressed with his work and professionalism on the first job, I had him take care of another job while he was there. I plan to use him on upcoming future work. I would recommend him to anyone looking for quality work without all the fanfare and costs of other bigger companies."
Response time11 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for CRABTREE PLUMBING INC
CRABTREE PLUMBING INC
5.0(
6
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

project photos
3 neighbors recently requested a quote
Avatar for WATER HEATER PDQ.COM LLC
WATER HEATER PDQ.COM LLC
5.0(
11
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

In business since 2024

Free estimates

Credit card accepted

"I recently noticed that my tankless water heater wasn't providing water as hot as it used to, so I called Water Heater PDQ to investigate the issue. Their response was incredibly fastâ they came out the same day! Their team was extremely knowledgeable and quickly identified the problem: a buildup of mineral deposits in the heat exchanger, which was slowing down the heating process. From the moment they arrived, they listened attentively as I explained the issue. They assured me that it could be fixed quickly, efficiently, and affordably, putting my worries about needing a replacement at ease. I learned that the solution involved flushing the tankless water heater with vinegar, a process that took about an hour. After they finished, my tankless water heater was back to its original performance, providing dependably hot water once again. What a relief! They made the process look easy, cleaned up thoroughly, and left no trace of their work. The technicians were polite, knowledgeable, and neat. I would highly recommend Water Heater PDQ to all my friends and family!"
Happy Customer
Tankless
Thank you Fernando
Response time1 day
Response rate87%
Recommended by81%of homeowners
Atlantic Plumbing Services, LLC
4.8(
12
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"I hired Kyle to fix a plumbing leak identified by a home inspector in a house I purchased. Kyle advised & showed me that the purported leak identified did not exist, thereby saving me from an expensive repair. He then agreed to check out the plumbing in the house for a very reasonable amount & performed some additional cosmetic & filtering work, also at very reasonable rates. He was extremely knowledeable, friendly & professional in his dealings with me. I would highly recommend him for any plumbing work that one needed."
Recommended by100%of homeowners
Avatar for Terry Vereen Plumbing
Terry Vereen Plumbing
4.6(
383
)
Tankless Water Heater - Repair

Serving Saint Johns, FL and surrounding areas

In business since 1983

Free estimates

Emergency services offered

"Hired for a job in Historic St Augustine. Was very upfront on the location of the house. Scheduled for 8:30 am. At 8:55 am the day of the job, the plumber called and was like "Oh, you're way down in St Augustine." Umm, yeah. He didn't show up until 9:45 am. Needed him to fix an outside water spigot and he did the job. Then needed to address poor water pressure in a bathroom sink. Assumed it was a clogged aerator. He could not remove the aerator but he did check the water pressure and it was good. The next day I watched a youtube video and removed the aerator myself. There was another fine mesh one behind it. Could not remove that so I ended up replacing the faucet myself. Now it works fine. Would I recommend? Eh, probably not. If St Augustine is too far to drive to make an 8:30 appointment, tell me up-front. And no, did not get any discount for making me wait. In fact he was there a little over an hour and I got charged for 1.25 hours."
Response time1 day
Recommended by91%of homeowners
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