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TRUSTED BY BALLWIN, MO HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon206
    Verified water heater services reviews

Top-Rated Water heater pros in Ballwin - 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 Ballwin, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"I called Hosack on a Thursday morning because my water heater had died, and because of their great Angi reviews. They had a plumber, Kent, at my house before noon. Kent was fantastic ... great work, extremely knowledgeable, and VERY customer oriented. I'm extremely happy with Hosack's responsiveness, quality of work and attention to detail. Going forward, they (and I hope Kent!) are my plumbers of choice. I highly recommend!"
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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 Ballwin, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"This was a complex retrofit tankless water heater installation and out of 30+ companies called and solicited for this project, Brett and Dunn's HVAC was the only company to 1) entertain performing the installation correctly (gas line sizing and calculations), 2) had prior experiencing working with tankless heaters, and 3) took the time to work with me on a long list of specifications. These are bulletproof systems if the installation is done correctly and Dunn/Brett took the time to ensure the install was on point and everything went smoothly. They also installed a softener and filtration system. Everything went well from bid to install and I highly recommend Brett and Dunn's - will use again as I could not be more pleased!"
Additional Photos
Response time2 days
2 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Anytime Plumbing Services
Anytime Plumbing Services
5.0(
379
)
Water Heater - Install or Replace - For Business

Serving Ballwin, MO and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Needed to replace water heater and pressure valve. Responded to our need immediately. Offered best price. Explained all issues. Got permission for all work. Completed all work quickly and expertly. Helped us with application for rebate. We got the rebate quickly. New Water Heater is great. Very personable guy. An ideal service provider. An exceptional customer experience. Remarkable."
Dual waterheaters
Dual waterheaters
Dual waterheaters
Single waterheater
Response time3 hrs
Response rate86%
2 neighbors recently requested a quote
Avatar for MAPLEWOOD PLUMBING
MAPLEWOOD PLUMBING
4.8(
337
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Ballwin, MO and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"The plumber was very punctual and polite and did an excellent job. He made a couple of additional recommendations regarding our aging pipes and unsupported water heater overflow tank while he was here, but didn't push any services. He was also great when our giant, hyper dog got inquisitive and came over to say hi. The price was a little more than we were expecting, mostly because the awkward space he had to fit the sink into required some extra time and parts from his truck, but seemed to be in line with what we had seen while researching our plumbing options."
Additional Photos
Additional Photos
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Additional Photos
Additional Photos

+7

1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for American Society of Heating & Cooling Specialists LLC
American Society of Heating & Cooling Specialists LLC
4.5(
21
)
Water Heater - Repair or ServiceTankless Water Heater - Install - For BusinessTankless Water Heater - Repair - For Business+2 more

Serving Ballwin, MO and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

HVAC Technicians At Your Service Since 1991; As a fully licensed, bonded and insured air conditioning, heating and ventilation company, American Society of Heating and Cooling Specialists provides residential and commercial maintenance, installation and repair services on all major brands of heating, air conditioning and restaurant equipment to customers throughout St. Louis, St. Charles, and the surrounding areas.\nPlease Look us up on GOOGLE(Maryland heights)\nCall phone- 314.337.8337 ( text/call)

DOLLAR TREE COMMODE
DOLLAR TREE
DOLOLAR TREE
Patriot Club Member
Patriot Club Member

+9

25 neighbors recently requested a quote
Recommended by38%of homeowners
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Water Heaters FAQs, answered by experts

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 right way to vent a gas water heater is to have a pipe directly upward or slopes upward out of the house. Because hot air naturally rises, this type of venting will efficiently ensure that all gas moves out of the house. Your system may rely on fans or blowers as well.

A single shower consumes an average of over 17 gallons, while brushing your teeth with the water running uses up to four unnecessary gallons. Watering the lawn spreads hundreds of gallons of water across the yard each time. Limiting water usage in these areas can significantly cut down your water bill.

Depending on the brand of water heater, you may need to install an expansion tank in order to meet the conditions for warranty coverage. It’s important for consumers to read the fine print of the warranty to see if an expansion tank is necessary. Even if an expansion tank isn’t required for the warranty, it’s usually mandated by building codes—although not for tankless water heaters.

We recommend you turn off the unit, the power, and the water supply as soon as you notice a leak. Your water heater tank should have a dedicated shut-off valve located on the cold inlet pipes. If the valve is broken or inoperable, use the shut-off valve to your home's main water supply to stop the flow to the entire house.

Avoid touching valves or pipes directly without confirming if they are hot. Wear gloves and other safety gear to keep from coming into contact with hot levers or components when turning off your leaking water heater.

The Ballwin, MO homeowners’ guide to water heater services

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