Denver Boiler Repair
Serving Denver For Over 55 Years
Boiler Repair Specialists
Rasmussen Mechanical’s boiler repair department has been serving Denver for over 55 years! Our team of boiler experts provides boiler repair, replacement, installation and maintenance to facilities across Colorado. With technicians available 24/7, we provide commercial and industrial mechanical equipment service, sales and parts.
Address: 15335 E. Fremont Dr. Centennial, CO 80112
Main: 303-292-1113
24/7 Service Line: 1-800-237-3141
Email: rockymountain@rasmech.com
Office Hours: Monday – Friday: 7:00am – 4:00pm
Our Boiler Services
✔ Boiler Repair Services
Our expert technicians address all boiler problems, from leaks, low pressure, and inefficiency to broken systems, tubes, sheets, and more in watertube, firetube, and condensing boilers—includes code welding, re-tubing, refractory repair and ASME-compliant repairs for reliable heating in Denver’s, commercial, and industrial setups.
✔ New Boiler Installation
Professional setup and seamless upgrades of high-efficiency models, including combi boilers and eco-friendly options tailored to Denver’s climate, your heating needs, and energy savings—covers removal of old or inefficient systems.
✔ Boiler Maintenance
Scheduled preventive care with waterside/fireside cleaning, hydro/bubble tests, burner tuning, annual inspections, and safety checks to avoid breakdowns, comply with Colorado standards, and reduce risks in harsh Denver environments.
✔ Boiler Burner Service
Tuning and repairs for optimal combustion, energy efficiency, and heat exchanger function to ensure smooth, cost-effective operation.
✔ HVAC And Water Heater Service
We provide full HVAC and water heater services—including furnace repair and replacement, air conditioning service and heating system maintenance. Whether it’s a commercial furnace, industrial HVAC unit, or tankless water heater, our Denver-based team delivers reliable service.
We Also Offer
✔ Emergency Boiler Rentals
24/7 temporary units to minimize downtime during repairs, plus comprehensive support for integrated heating, air conditioning, and water heater systems.
✔ Boiler Parts Sales
We are a one-stop shop for boiler parts with over 20,000 parts in stock.
✔ Auxiliary Boiler Room Equipment Repair
Servicing deaerators, blowdown systems, pumps, valves, combustion setups, and steam traps through global manufacturer partnerships.
Local Reviews
“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 a 100 confidence with your team. St Julien has found a vendor of choice.”
Ron Gallion, St Julien Hotel & Spa
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Why Choose Us
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 boiler service includes routine maintenance, repair, and replacement of boilers, as well as maintenance of water heaters and HVAC systems. Our technicians are equipped to handle all aspects of boiler service, from cleaning and inspecting to repairing and replacing parts.
- Serving Denver since 1970
- 3rd Generation Family Owned Business
- 24/7 Emergency Service
- Most Experienced Technicians In The Industry
- Compliant with Colorado Building Codes and Efficiency Standards
We Can Help
Whether you have no hot water, are hearing strange boiler noises, notice low boiler pressure, have a leaking boiler, are dealing with a broken boiler, we can help. Our professional technician can quickly diagnose and resolve issues, including situations where your boiler shuts down unexpectedly, to get your system back up and running fast, especially during Denver’s colder winter months. We provide boiler repair, maintenance, combustion analysis, emissions testing, and efficiency upgrades.
Signs You Need Boiler Repair in Denver
If your boiler is showing any of these common signs, don’t wait—contact us for prompt service:
- No hot water or inconsistent heating
- Strange noises like banging, whistling, or gurgling from the system.
- Low boiler pressure
- Leaks around the boiler or pipes, which can cause water damage.
- Higher-than-usual energy bills indicating inefficiency.
- Frequent shutdowns or pilot light issues.
- Unusual smells, such as gas or burning odors (call immediately for safety).
About Rasmussen Mechanical
At Rasmussen Mechanical, our mission is to deliver outstanding boiler services that keep Denver businesses warm and comfortable year-round. Customer satisfaction drives us to ensure your boiler operates at peak performance, providing dependable heat and hot water when you need it most. We specialize in Denver boiler repair, Denver boiler replacement, boiler installation, and routine maintenance, quickly resolving issues like water leaks and uneven heating.
Our team of experienced technicians is the backbone of our success, with extensive training in emergency boiler repair, boiler maintenance, and installation. Equipped to handle all types—including gas boilers, combi boilers, and high-efficiency boilers—they respond promptly, preventing minor issues from becoming costly problems.
Denver Boiler Repair FAQ
What types of boilers do you repair?
We repair all major types of boilers including firetube, watertube, condensing, steam, hot water, and combi boilers. Whether you’re running a residential system or a large industrial unit, our Denver boiler repair team is equipped to handle it.
How quickly can I get boiler repair service?
We offer 24/7 emergency boiler repair throughout the Denver metro area. In many cases, we can dispatch a technician the same day to minimize downtime, especially during colder months.
Do you provide commercial boiler repair?
Yes. We specialize in commercial and industrial boiler repair across Denver and the surrounding areas. From distilleries and hotels to manufacturing facilities and schools, we service a wide range of systems.
What are the signs I need boiler repair?
Common signs 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, call our Denver boiler repair team for fast service.
Are your boiler repairs compliant with Colorado state codes?
Absolutely. We hold R, S, H, U, and PP stamps and all work is performed to ASME and Colorado building code standards. Our technicians are licensed, certified, and trained to keep your system safe and compliant.
Can you help with both boiler repair and replacement?
Yes. If your system is beyond repair or outdated, we offer boiler replacement and installation services tailored to Denver’s climate and your energy efficiency goals.
Do you stock boiler parts locally?
We maintain an inventory of over 20,000 boiler parts, enabling fast turnaround on most Denver boiler repair jobs. If it’s not on hand, we can quickly source it through our national supply network.
What areas around Denver do you service?
In addition to Denver, we serve Aurora, Centennial, Boulder, Lakewood, Littleton, Englewood, Westminster, Thornton, and other nearby communities.
Do you offer maintenance plans for boilers?
Yes. We provide preventive boiler maintenance programs to reduce breakdowns, improve energy efficiency, and extend the life of your system.
How much does boiler repair cost in Denver?
Costs vary based on the issue, system type, and parts required. We provide upfront quotes before any work begins. For emergency or routine service, call us at 303-292-1113 or request a quote online.