4.6 
3.2k+ *The Angi rating for Boiler Installation companies in Affton, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
*The HomeAdvisor rating for Boiler Installation companies in Affton, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
Last update on December 22, 2025
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 (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 Affton, 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."
Serving Affton, MO and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"Steve and Greg both were very knowledgeable and explained everything as they installed my new water heater and pressure valve regulator. They are very professional and friendly. They also cleaned up after the installation. I would definitely recommend them."
Serving Affton, MO and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"Don completed the water heater installation on time and communicated very promptly & thoroughly throughout. He is a very nice, competent man and we definitely recommend him"
Serving Affton, MO and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"I had a new furnace installed. Chuck and Andrew were both well trained and very nice. I would gladly have them work on my HVAC system any time."
Serving Affton, MO and surrounding areas
Approved
In business since 1985
Free estimates
Warranties offered
"Jacob thoroughly looked over everything; water lines, gas line, igniter, gas valve, connections, etc.. He took the time to make sure everything was working properly and even educated me on a few things I didn't know."
+7
Serving Affton, MO and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"I had a 15 year old system that was nearing the end of its life span. During the quote process, they gave me options based on what was hoping to spend. The quote they provided for a higher efficiency system made the decision pretty easy. The install team was extremely professional and I couldnâ t be happier with my new HVAC system."
Serving Affton, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Credit card accepted
"Fantastic...love.our new shower. The installers we're professional, courteous and very respectful. Answered all our questions., explained what they were doing as the installation went on.."
+15
Serving Affton, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Credit card accepted
"Great job installing the water heater and the price was nice."
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