Business Details
50+ Years
experience
Emergency
services
Your Trusted Partner for Boiler Sales & Service in Colorado
Thomas B. Mansfield Co. has been a trusted partner in boiler room solutions for commercial, industrial, and institutional buildings since 1963. As a second-generation family business, we combine decades of expertise with a commitment to quality and reliability. Our team of certified technicians provides 24/7 emergency repairs, preventive maintenance, and system optimization services. We specialize in high-efficiency steam and hot water systems tailored for healthcare, education, government, and industrial facilities. Our in-house parts department stocks genuine Cleaver-Brooks components and aftermarket solutions to ensure rapid response times.We offer fully equipped rental boiler solutions for planned or unplanned outages. With headquarters in Castle Rock, Colorado, we serve Eastern Colorado, Western Nebraska, and Wyoming. Our legacy includes systems still operating in facilities that started with us over 50 years ago. We are the first and only Cleaver-Brooks representative in Colorado and Wyoming. Our dedication to safety and compliance is demonstrated through ISNetworld certification and adherence to rigorous industry standards.
Services
Boiler Sales
Emergency Repairs
Parts Supply
Preventive Maintenance
Equipment Rentals
Details
- Year established: 1963
Highlights and features
- 60+ years of specialized boiler system expertise in the Rocky Mountain region
- 24/7 emergency response with factory-trained technicians available at all times
- Certified ASME shop with R Stamp for pressure vessel repairs and modifications
- Exclusive Cleaver-Brooks representation in Colorado and Wyoming
- Comprehensive in-house parts inventory for rapid service fulfillment
Associations and certifications
- ASME
- ISNetworld
Services
Boiler Sales
We offer high-efficiency steam and hot water boiler systems tailored for healthcare, education, government, and industrial facilities. Our solutions include low- and high-pressure systems, packaged and custom-engineered units, and complete boiler room equipment. Every system comes with factory support and post-sale services including installation assistance and maintenance programs.
Emergency Repairs
Our factory-trained technicians provide 24/7 emergency repair services for all major boiler makes and models. We offer rapid response with fully equipped service vehicles and access to genuine Cleaver-Brooks components. Our team handles urgent boiler failures, combustion analysis, and system reconditioning to restore operations quickly and safely.
Parts Supply
Our in-house parts department stocks genuine Cleaver-Brooks components and aftermarket solutions for all boiler systems. We provide burner parts, control systems, tubes, valves, pumps, and water treatment accessories. Our team offers part identification assistance and fast turnaround for both standard and urgent replacement needs.
Preventive Maintenance
We develop customized preventive maintenance programs to ensure optimal boiler performance and longevity. Services include annual inspections, combustion tuning, safety testing, and compliance documentation. Our programs help facilities maintain operational efficiency while meeting regulatory requirements and minimizing unexpected downtime.
Equipment Rentals
Our rental fleet includes portable, trailer-mounted, and skid-mounted boiler units for various capacities. These temporary solutions support planned maintenance, emergency outages, and system upgrades. We provide fast deployment of fully equipped rental systems to maintain continuous operations during critical periods.
People
John Mansfield
President
John Mansfield leads the company's strategic growth as third-generation leadership. He relocated operations to Castle Rock in 2020, expanding service capabilities across the Rocky Mountain region while maintaining family commitment to quality and reliability.
Jimmy Malseed
Chief Operating Officer
Jimmy Malseed oversees daily operations with extensive experience in boiler system management. He ensures efficient delivery of sales, service, and parts operations while maintaining the company's high standards for technical expertise and customer satisfaction.
John S
Service Manager
John S manages the 24/7 service department with specialized expertise in boiler maintenance and emergency repairs. He leads a team of certified technicians providing rapid response and preventive maintenance programs for commercial and industrial clients.
Anthony K
Aftermarket Sales Manager
Anthony K specializes in aftermarket boiler components and system upgrades. He provides technical guidance for parts selection and integration, ensuring optimal performance and compatibility with existing boiler systems across various industries.
Joe M
Parts Manager
Joe M oversees the in-house parts inventory with extensive knowledge of boiler components. He ensures fast fulfillment of genuine Cleaver-Brooks parts and aftermarket solutions while maintaining accurate inventory for critical replacement components.
Questions
What boiler system components require regular maintenance?
Critical components include pressure vessels, burners, tubes, economizers, deaerators, and control panels. Regular maintenance ensures proper combustion efficiency, safety valve functionality, and water treatment system performance.
How quickly can emergency boiler service be dispatched?
Our 24/7 emergency service team responds immediately with technicians and equipment available within minutes of receiving service calls across Colorado, Wyoming, and Western Nebraska.
What industries benefit most from your boiler solutions?
We specialize in healthcare facilities, educational institutions, government buildings, food processing plants, and industrial manufacturing operations where boiler reliability is mission-critical.
Do you provide boiler system upgrades for older equipment?
Yes, we offer modernization kits, burner retrofits, and control system upgrades to improve efficiency and extend the lifespan of existing boiler systems while maintaining safety compliance.
What makes your parts inventory different from competitors?
We maintain genuine Cleaver-Brooks components alongside aftermarket solutions, ensuring compatibility and performance. Our inventory includes hard-to-find parts with fast turnaround supported by local stock.
