Dylan L.
8/7/2018
After a rocky start with them, I have to say, I am very happy with the results. The first day they never showed up. They didn't put us on the logs for some reason. The second day they came by and...
Sierra Mechanical Service
Closed
(61)
212 Crafton Dr
O Fallon, MO 63366
Sierra Mechanical Service, located in O'Fallon, MO, specializes in heating and cooling solutions, offering a range of services including heating air repair and AC repair. The company is dedicated to providing quality HVAC services to ensure customer satisfaction and comfort.
With a focus on reliability and expertise, Sierra Mechanical Service caters to the needs of homeowners and businesses alike, making them a trusted choice in the heating and air conditioning industry. Their reputation is built on a commitment to quality service and customer care.
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Reviews
1.561 reviewsJim P.
2/3/2025
This is the first time using Sierra Mechanical Service, and, the first time the HVAC tech had been called to my dad's house for a home warranty claim assigned by Choice Home Warranty. The HVAC...
Victoria S.
3/25/2024
Sierra Mechanical was assigned to us by our home warranty company. The service was for a non functioning AC. The original date had to be changed as the temps dropped for our scheduled day and we...
Denise B.
2/27/2024
I was directed to this place by my home warranty, to have my furnace repaired. The repairman came out and recommended the entire system be replaced as it was almost 20 years old. The receptionist...
Brett S.
3/29/2023
We only used them because our home warranty assigned them. They straight up lied and said the home warranty denied the claim (after getting the runaround for over a week), which the warranty...
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