A Legacy of Steam Expertise—Built to Last
Legacy Begins
Thomas Mansfield Sr. envisioned a new standard for boiler system services—and with that vision,
Thomas B. Mansfield Co. was founded.
New Growth
T. Mansfield Jr. took the reigns in the 1990's, growing the company and establishing new roots in Englewood, CO.
A Bold Move Forward
John Mansfield, our now-President relocated the company to Castle Rock, CO, marking a new chapter of growth and leadership.
Commercial & Institutional Experts
What Makes Us Different
Thomas B. Mansfield Co. has been at the heart of boiler system solutions in Colorado and Wyoming since 1963. As the exclusive Cleaver-Brooks representative in the region, we carry a name trusted worldwide for unmatched quality and reliability.
We’re a second-generation family business that believes in doing the job right—whether it’s engineering new systems, supporting critical infrastructure, or responding to a 3AM emergency. Our systems still operate in facilities that started with us over 50 years ago.
Regions We Serve
Our primary service area covers Eastern Colorado, Western Nebraska, and Wyoming. With headquarters in Castle Rock, we’re proud to serve a wide range of counties across the region, providing top-tier structural and geotechnical solutions where they’re needed most.
Awards & Recognition
2024
Clearfire Water
Conversions
Parts
2023
Aftermarket Conversion
Firetube
Packaged Water System
2022
Conversions
Engineered Boiler Systems
2021
Burner Systems
Clearfire Steam
Commercial
Conversions
PWS
2020
Burner Systems
Clearfire Water
Economizers
Commercial
Conversions Only
Engineered Boiler Systems
PWS
Exhaust Solutions
Firetube
Parts Only