Serving O Fallon, 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 O Fallon, MO and surrounding areas
Approved
In business since 2009
Warranties offered
Credit card accepted
"Jason and Allen were great to work with. They had to wrestle with our 30 year old water heater and replace it with a nice new one. They arrived on time in a snow storm and finished hours ahead my expected time frame. I was waiting to hear a list of excuses and expensive problems. However everything was positive and informative. The guys were friendly and prepared. The cost estimate was exactly what the bill was. Plus I learned more about my house which was a great bonus."
+2
Serving O Fallon, 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 O Fallon, MO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"Steve arrived on time, quickly diagnosed the problem with the water heater, gave me options to fix/replace without trying to steer me to one option or the other, and answered my questions. I opted for replacement and he got the appointment set up for the next day so we wouldn't be without hot water any longer than necessary."
+18
Serving O Fallon, 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 O Fallon, MO and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Gave a bid at 8 AM and came back with a 40 Gal. water heater 2 hrs. later. Did the work and my renter had hot water in about 35 minutes. Good job. They have got my business. Thanks."
Serving O Fallon, 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."
Serving O Fallon, MO and surrounding areas
Approved
In business since 2006
Emergency services offered
Warranties offered
"i called because i needed work on my water heater. they were able to come the next day and take care of everything. professional."
+3
Serving O Fallon, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Warranties offered
"Had them replace master water shut off valve. Did a great job, was quick, efficient, and reasonable!"
Serving O Fallon, MO and surrounding areas
Approved
In business since 2000
Credit card accepted
Offers commercial services
"I hired this company to extend the natural gas in my house and would definitely recommend them. I felt that the plumber who did the installation really knew what he was doing and seemed like a great guy. The installation went well and the price was fair."
+1
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