4.7 
174 *The Angi rating for Water Heater Service companies in Affton, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.
*The HomeAdvisor rating for Water Heater Service companies in Affton, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.
Last update on October 06, 2026
Serving Affton, MO and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"Did a great job replacing my water heater and was about 30% cheaper than the other bids I got."
Serving Affton, 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!"
Serving Affton, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Emergency services offered
Warranties offered
"Remove electric water heater and install a new high efficiency gas water heater."
+10
Serving Affton, MO and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"Steve was absolutely amazing to work with! Needed to replace my water heater and messaged him late Wednesday night, he got back with me early Thursday morning with the quote and came out that morning at 9:15 to replace the water heater. We got a great water heater, easy installation and the work was done very well. Steve is very knowledgeable and has such a great personality! You will NOT go wrong with hiring Steve! Thanks again for all your help, Steve."
Serving Affton, MO and surrounding areas
Approved
In business since 1985
Free estimates
Warranties offered
"I purchased an electric tankless and pre-filter/softener directly from the manufacturer and started hunting for a plumber to install it. Now most all plumbers recommended against a tankless hot water heater, and Maplewood wasn't really any different in this regard. BUT, they listened to us, didn't treat us like idiots, and obliged us in our foolishness and they were really awesome. They did the job quickly and without a mess. Also, WE LOVE OUR NEW TANKLESS HOT WATER HEATER! I looked at our electric bill after 2 months (March-April) of using our Stiebel-Eltron E-tankless whole-house water heater unit, and the kW usage actually DECREASED from one year ago for those same two months. That’s right, there was no increase in our electric bill. As expected, our gas usage decreased. My wife was very worried because she often ended up talking to the plumber issuing the dire warnings and predictions about our silly misguided endeavor to get a tankless unit. Now, she couldn’t be happier. Tandem back-to-back showers all day long, if we wanted. Never ending hot water! Thank you Maplewood Plumbing for helping us!"
+7
Serving Affton, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Warranties offered
"Go Time showed up the next day, put down floor protection, checked&modified pressure, removed&installed water heater in near 2 hours."
Serving Affton, 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.
+1
Serving Affton, MO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Noah did a wonderful job explaining what was wrong with my water heater. I appreciated him reviewing all about the new water heater. A very pleasant experience."
+7
Serving Affton, MO and surrounding areas
Approved
In business since 2020
Credit card accepted
Customers say: Quick response
We work extremely hard for the owner and always have the owner's best interest at heart. Our long term vision is for us to become a go to general contractor with capabilities to do multiple types of projects.
+17
Serving Affton, MO and surrounding areas
Approved
In business since 2017
Free estimates
Customers say: Quick response
"We hired Master Remodel & Construction after our master bathroom, kitchen and garage suffered major water damage after an interior flood caused by an overflowing toilet. Brian Inkley (owner) and Jacob Quick (project manager) have a team of dedicated, talented professionals. They did a superb job in restoring our damaged house. They are a busy team of workers who kept us appraised of their availability for the various stages of our restoration. For the repairs that they didn't do themselves they had excellent recommendations for the professionals we needed such as the carpet installation, closet system installation, kitchen cabinets and the refinishing of our hardwood floors. They seem to be in demand, working at several projects at the same time but we always felt that we were their top priority. Jacob worked with our homeowners insurance adjuster to be sure that the funds allocated for our losses were enough to complete our projects. We recommend Master Remodel & Construction with pleasure."
+11
From average costs to expert advice, get all the answers you need to get your job done.
The cost to flush a water heater in St. Louis, MO, varies based on the type, size, and more. Keep reading to learn how much you could pay.
Running out of hot water too quickly? Use this water heater repair cost guide to see what a fix will cost in St. Louis, MO.
Find out the average baseboard and wall heater installation cost in St. Louis, MO. Learn what you can expect to pay and get your home ready for winter.
Worried your water heater might freeze this winter? Learn to spot the warning signs and how to safely thaw your tank or tankless system out if necessary.
Hybrid water heaters will have you weighing high initial costs versus long-term savings. Is it the right option for you? Explore the pros and cons of hybrid water heaters.
The average lifespan of water heaters is 6 to 15 years for conventional models and up to 20 for tankless ones, but it can be less if they are not properly maintained.
