
DENVER BOILER INSTALLATION
Proudly Serving Denver, CO For Over 55 Years

WHO WE ARE
Rasmussen Mechanical’s boiler installation department has been serving Denver for over 55 years! We provide boiler installation, repair and maintenance for a wide range of boiler equipment. Our team consists of certified boiler experts with extensive experience. We pride ourselves on being able to work with all makes and models of boilers. From high pressure steam to low pressure hot water systems, we can do it all.
CONTACT US
Address: 15335 E. Fremont Dr. Centennial, CO 80112
Phone: 303-292-1113
24/7 Service Line: 1-800-237-3141
Email: rockymountain@rasmech.com
Office Hours: Monday – Friday: 7:00am – 4:00pm

A LOCAL LEGACY
We’ve been the trusted choice for Denver boiler installation by building on a legacy that dates back to 1915. Our team proudly continues the long-standing expertise of C.G. Johnson Boiler Company, a historic boiler contractor. That heritage gives our customers confidence they’re working with a team that understands Denver buildings, Denver industries, and the boiler systems that keep them running.

OUR SERVICES
- New Boiler Installs
- Boiler Repair and Service
- Boiler Maintenance
- Boiler Burner Service
- Emergency Boiler Rentals
- HVAC and Water Heater Service
How We Can Help?
WHY CHOOSE US?
By covering a broad range of mechanical services in house, our team can provide a turn key install from start to finish. We offer free estimates for new ensuring transparent pricing before any work begins. We try to make it easy for facilities to request a quote or schedule service appointments with us. Our team is dedicated to helping businesses make the right choice for their boiler needs, providing expert guidance every step of the way. With decades of experience servicing Denver boilers, we offer a comprehensive range of boiler services in Denver, including installation, repair, maintenance, and inspections for both residential and commercial clients.
- Serving Denver since 1970
- 3rd Generation Family Owned Business
- 24/7 Emergency Service
- Most Experienced Technicians In The Industry

DENVER BOILER FAQ
Can you see if you can repair before replacing our boiler?
Yes. We are licensed to perform boiler repairs in Colorado and hold R, S, H, U, and PP stamps to perform an array of pressure vessel repairs. Our technicians are equipped to handle all aspects of boiler service, from cleaning and inspecting to repairing and replacing parts. When it comes to boiler repair and service in the Denver, CO area, our company stands out for its commitment to quality and efficiency. Our dedicated team of technicians brings years of experience to every job, ensuring that your heating system receives the attention it needs to operate at peak performance. We offer a comprehensive range of boiler repair services, from routine maintenance and minor repairs to complete system overhauls and replacements.

Can you keep us online while you replace our boiler?
Yes. With our emergency boiler rentals, you never have to worry about being left without heat or steam. We offer a variety of rental boilers to ensure we have the perfect fit for your specific situation, and our professional service team ensures a seamless installation and setup.
I'm concerned about safety when installing a new boiler system.
Ensuring the safety and compliance of your boiler system is our top priority. At Rasmussen Mechanical, we strictly adhere to local codes and ASME standards, so you can have confidence in the safety and reliability of your heating system. Our technicians are highly qualified, holding R, S, H, U, and PP stamps, which means every repair and installation meets rigorous safety requirements.

What types of boilers do you repair and replace?
We repair and replace all major types of boilers including firetube, watertube, condensing, steam, hot water, and combi boilers. Whether you’re running a small commercial system or a large industrial unit, our Denver boiler team is equipped to handle it. We can install high efficiency models that are tailored to your specific needs. Maximizing the efficiency and performance of your boiler system is key to reducing energy bills and ensuring reliable heating. Our technicians stay up to date with the latest technology, helping you choose a boiler that delivers both comfort and cost savings.
What are the signs I need boiler repair?
Common boiler problems that indicate the need for repair include no heat, no hot water, low boiler pressure, water leaks, strange noises, rising energy bills, or the boiler shutting down unexpectedly. If you’re seeing any of these boiler problems, call our Denver boiler repair team for fast service.

How much does a new boiler cost?
The cost of a new boiler installation can depend on several factors, including the type and size of the boiler, as well as the complexity of your property’s heating system. Investing in a professional boiler installation helps guarantees a safe and efficient setup. It also delivers long-term benefits like improved energy efficiency, lower heating costs, and enhanced comfort for your home or business.
Can you maintain my boiler after install?
Yes. We provide preventative maintenance and efficiency upgrades to keep your system running at peak performance, minimizing the risk of expensive repairs and unexpected downtime. With our expert guidance and ongoing maintenance services, you can enjoy a dependable, energy-efficient heating system that keeps your property comfortable while controlling energy costs.

THE BOILER INSTALLATION PROCESS
Our boiler installation process is designed to deliver efficient, high-quality results for every customer. We begin by carefully assessing your boiler needs, taking into account the size of your property, your heating requirements, and your existing plumbing and mechanical systems. Our technicians then recommend the best boiler models for your situation. We can help, whether you need a new industrial unit, a commercial boiler installation for your business, or a repair work on an outdated system.
Once you’ve made your selection, our team handles the complete installation, ensuring every component is properly connected and your system operates safely and efficiently. We pride ourselves on providing professional service from start to finish, with a focus on excellent customer service and attention to detail.
After installation, we offer ongoing maintenance services to help you maintain your new boiler and keep it running smoothly for years to come. Serving Denver and the surrounding Colorado area, our team is here to make your experience as seamless and worry-free as possible. Our goal is to deliver great service and peace of mind, so you can focus on your business while we handle the heating.

“For all of my company’s boiler needs, I won’t go anywhere else. George, Gus, Carrie, they have all the connections that I will ever need, from boilers to automation controls.”
Dale Meyer, Stranahan’s Whiskey Distillery & Cocktail Bar
“Stacey and Aaron have been awesome. Great to work with and really exceptional with resolving issues. I have 100% confidence with your team. St Julien has found a vendor of choice.”
Ron Gallion, St Julien Hotel & Spa

