
South Dakota Boiler Supplier
Proudly Serving South Dakota For Over 55 Years
YOUR TRUSTED EQUIPMENT PROVIDER
Rasmussen Mechanical Services is a leading boiler supplier in South Dakota, providing commercial and industrial boiler systems, burners, auxiliary equipment, and turnkey support for facilities across the state. From new boiler sales and system upgrades to emergency boiler rentals and long-term maintenance, our team helps South Dakota facilities get what they need fast.
With in-house engineering support and deep experience across healthcare, manufacturing, food processing, education, and energy facilities, we can help you select the right boiler for your application.
Contact Us
24/7 Number: 1-800-237-3141
Email: sales@rasmech.com
Serving SD From: Sturgis, SD and Sioux City, IA
Office Hours: Monday – Friday: 7:00am – 4:00pm

BOILER SALES & EQUIPMENT WE SUPPLY
As a reputable boiler supplier, we offer a range of products and solutions, including:
New commercial and industrial boilers (steam and hot water)
Packaged firetube and watertube boiler systems, including D-type, A-type, and O-type
High-efficiency boiler burners (gas, dual-fuel, low-NOx)
Deaerators, feedwater tanks, and condensate return systems
Advanced boiler controls, safety devices, and instrumentation to meet required standards
Blowdown heat recovery and energy efficiency upgrade options
Boiler room auxiliary equipment and piping packages to support your HVAC and heating needs

YOUR TRUSTED FULL-SERVICE BOILER SUPPLIER
Rasmussen Mechanical Services has proudly served South Dakota for over 55 years, providing comprehensive boiler supply, installation, and service throughout Sioux Falls, Rapid City, Brookings, Aberdeen, Watertown, Mitchell, Yankton, and surrounding communities.
We partner with top manufacturers to offer the widest range of boilers, including D-type, A-type, and O-type configurations, along with burners, advanced boiler controls, deaerators, feedwater systems, stacks, gas trains, blowdown equipment, and integrated water treatment solutions. Whether it’s a new installation, capital replacement, or emergency repair—delivering fast, reliable service and technical expertise tailored to your facility’s heating and HVAC needs.

CHOOSING THE RIGHT SOUTH DAKOTA SUPPLIER
Selecting the right supplier goes beyond just equipment availability—it requires thorough technical knowledge and expertise. A trusted supplier will perform detailed heat load and heat loss calculations tailored specifically to your facility and South Dakota’s unique climate conditions. This ensures your boiler system is properly sized for optimal efficiency, safety, and long-term cost savings. Additionally, a reliable supplier will help you understand and apply for energy-efficiency incentives, rebate programs, and essential compliance requirements.
Our knowledgeable team works closely with you to select the right boiler and auxiliary equipment based on your facility’s load profiles, redundancy needs, emissions regulations, and lifecycle cost considerations. We provide a variety of products and solutions to ensure you can rely on your steam or heating systems for consistent comfort and performance.

WHY CHOOSE RASMUSSEN MECHANICAL SERVICES?
Over 55 years of experience serving commercial and industrial facilities with reliable heating solutions
Full-service boiler supplier, installer, and service provider committed to quality and customer satisfaction
Proven expertise in designing, installing, and maintaining complex boiler systems
Emergency boiler rentals and turnkey support to minimize downtime
Dedicated team providing ongoing training and technical support to contractors and customers
Proud to serve a wide range of industries with energy-efficient, high-performance boiler units

BOILER SERVICE, PARTS & ONGOING SUPPORT
Our comprehensive services go beyond just supplying equipment. We offer:
Turnkey installation and custom design
24/7 emergency boiler repair and service
Preventative maintenance programs
Annual boiler inspections, safety testing, and tune-ups
Genuine OEM and high-quality aftermarket boiler parts
Burner service, calibration, and safety device testing
Detailed steam system assessments
Providing this full lifecycle support distinguishes us from competitors and helps us ensure your system is built to meet your needs.

FULL LIFECYCLE SUPPORT
Beyond equipment selection, we offer comprehensive full lifecycle support. This includes licensed and insured installation teams, ASME code-compliant boilers and components, robust manufacturer warranties, and ongoing maintenance, genuine parts, and emergency repair services.
Given South Dakota's colder winters, 24/7 emergency service and temporary boiler rental solutions are vital for hospitals, industrial plants, and other critical facilities. Moreover, we maintain strong manufacturer partnerships and provides technical resources such as operator training and system optimization, ensuring your boiler system delivers reliable heating and supports your facility’s HVAC and domestic water needs.