4.7 
124 *The Angi rating for Water Heater Service companies in Arnold, 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 Arnold, 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 February 24, 2026
Serving Arnold, MO and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"He did a great job. We needed a new hot water heater, he put one in the next morning. Very honest."
Serving Arnold, 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 Arnold, 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 Arnold, MO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"Anton’s Air Conditioning and Heating installed a tankless water heater. We are so happy to never run out of hot water. The installers were very professional. I highly recommend Anton’s!"
+18
Serving Arnold, MO and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"I would highly recommend Anytime Plumbing! The customer service by Steve was excellent! Friendly, Professional and very responsive. We needed a water heater replaced on a Friday and he was at my house the same day within an hour! He also completed with Rebate form for the water heater with an envelope and stamp too! The pricing was affordable and less than competitors in the area! I will definitely call Anytime Plumbing in the future and recommend to my family and friends!"
Serving Arnold, MO and surrounding areas
Approved
Super Service Award Winner
In business since 1980
Free estimates
Emergency services offered
"Prompt service. Knowledgeable about power vented water heaters. Complied with CDCâ s coviden-19 guidelines."
+12
Serving Arnold, MO and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"They came to my rescue during a cold spell and my furnace died. Another company were going to charge my several thousand more for not as good of a furnace. I am extremely happy I went with Total Heating and Cooling!"
Serving Arnold, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Credit card accepted
"I am the owner of Ricksheatandair this company does all my plumbing needs including water heaters, and plumbing repairs. We have been working together for 5 or 6 years….. great company to work with."
Serving Arnold, 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 Arnold, MO and surrounding areas
From average costs to expert advice, get all the answers you need to get your job done.
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.
The cost to install a pool heater in St. Louis, MO, varies based on elements like type, pool size and more. Weigh different cost factors in this comprehensive guide.
Looking to replace or upgrade your water heater? Use this water heater replacement cost guide to see what the work will cost and what factors affect your total.
Done with cold showers and dish washing? Hire a water heater installation pro near you to get back to comfort and safety quickly.
Who can install a water heater for you? Look to hire a water heater installation pro or a licensed plumber for this job because of the challenges involved.
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.
