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TRUSTED BY SAINT JOHN, MO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon71
    Verified water heater services reviews

Top-Rated Water heater pros in Saint John - Updated Nov 2026

Avatar for Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
4.8(
345
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Saint John, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"It started off bad because I had the water heater installed, submitted my paperwork for my rebate for the installation and then my rebate ended up not getting honored because the water heater that was installed didn't qualify for Spire's rebate. Turn's out that the water heater that would fit my location as well as satisfy Spire's rebate, I would have had to wait 5 to 6 weeks for that specific water heater so, the owner of Hosack's Plumbing cut me a check for the amount of the rebate and the amount over time that the new water heater would have saved me. Not the perfect situation but, that was a win win for me as well as Hosack's Plumbing because a good water heater was installed just not one that would quite fit the Spire requirements for the rebate! Hence we didn't need to take a brand new water heater out and replace it with another water heater that was just .05 UEF Higher!"
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+2

Response time8 hrs
8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Repair+1 more

Serving Saint John, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I needed to replace my parents' 40 year old AC Condenser and coil, and replace it with something that worked with the new furnace my father got installed four years prior. They were able to do the work requested, and also offered to redo the furance installation as the previous company installed it right on the basement floor where any backup/water could possibly get into the system. They were very prompt and showed up on time/on schedule. They were very upfront about costs and pricing and there were no last-minute price changes or hidden fees, which I appreciate. Work was done well and they ensured that everything worked before leaving the job site. The gentlemen working were very professional and understanding. I highly recommend them for anyone looking to replace their HVAC or to correct work that was previously poorly done."
Additional Photos
Response time2 days
2 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Brighthouse Plumbing, LLC
Brighthouse Plumbing, LLC
4.9(
9
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+3 more

Serving Saint John, MO and surrounding areas

Approved

In business since 2000

Credit card accepted

Offers commercial services

You can expect our technicians to provide timely service, a clear explanation of the work to be performed, and upfront pricing. We focus on providing industry best customer service from start to finish. Our technicians are insured, licensed and bonded.

BrightHouse Plumbing
Water Fountain and Fill Station
Bathtub
Shower
Backflow

+1

Response time10 hrs
Recommended by100%of homeowners
Avatar for Mr. Rooter Plumbing of St. Louis
Mr. Rooter Plumbing of St. Louis
4.2(
351
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+4 more

Serving Saint John, MO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"The technician was honest and said that the water heater is in good working condition not needing any repairs or replacement We were told the opposite by another company!!! They have indicated that it needs replacement!!"
Mr Rooter Neighborly Hub for Home Services
Courteous, Uniformed Professionals.
Keep your home clean with mats and shoe covers.
Provide a price before we start.
Revolutionary Drain Cleaning Services

+7

Response time1 day
97 neighbors recently requested a quote
Recommended by86%of homeowners
Master Remodel & Construction
4.7(
18
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Saint John, MO and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: Quick response

"Jacob and Cody have been amazing to work with. We originally hired them to repair our stairs and have since contracted with them to install our kitchen tile floor, install electric in our kitchen island and to repair some of our drywall. Their team is very professional, their estimates are accurate and they do quality work. We plan to hire them again when we remodel our bathrooms."
Car port
Car port
Car port
Bathroom remodel
Bathroom remodel

+11

Response time2 hrs
Recommended by100%of homeowners
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Water Heaters FAQs, answered by experts

Several things can void the warranty for your water heater. Many water heater manufacturers state that installing your own will void the warranty. However, even if you get away with performing the task yourself, incorrect installation, lack of a building permit, and improper repair work, regardless of licensing status, can all render your water heater unprotected by both the manufacturer's warranty and any installation warranties. 

No, you’ll need to drain the tank before changing a water heater element, as the water heater element sticks through the side of the tank and uses a gasket to prevent water from pouring out. However, you don’t always need to drain it completely. If you’re only replacing the upper heating element, you can drain the tank until the water line is below the element. If you’re replacing the lower element, you’ll need to drain the whole thing.

The amount of time it takes to replace an electric water heater will depend on the skill level of the individual who is replacing it. For example, if you replace it yourself–and you don’t have much experience–you can expect the project to take a full day. 

However, if you have a certified plumber or water heater contractor install your new water heater, it can take as little as 2 to 3 hours.

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.

While possible, professional assistance is recommended to ensure compliance with local regulations and avoidance of avoidable risks.

The Saint John, MO homeowners’ guide to water heater services

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