Sioux Falls Rooftop AC REPAIR
Proudly Serving Sioux Falls For Over 55 Years
SIOUX FALLS ROOFTOP AC REPAIR SPECIALISTS
We have been performing rooftop AC repair in Sioux Falls, SD and the surrounding areas for over 55 years. We pride ourselves on working on all makes and models of heating and cooling equipment and are available 24/7 for emergency repairs. As a locally owned, family-run company and a fully licensed HVAC contractor, we employ some of the most experienced technicians in the industry to handle all of your commercial and industrial HVAC needs.
We proudly serve both commercial and industrial clients throughout the Sioux Falls area.
CONTACT US
24/7 Service Number: 1-800-237-3141
Local Number: (712)-252-4613
Email: sales@rasmech.com
Address: 2425 East 4th Street Sioux City, IA 51101
Office Hours: Monday – Friday: 7:00am – 4:00pm
HVAC SERVICES WE PROVIDE
- Commercial HVAC Repair
- RTU Replacements
- HVAC System Maintenance
- Boiler And Furnace Service
- Indoor Air Quality Solutions
WHY CHOOSE US
Rasmussen Mechanical Services is Sioux Falls’ trusted commercial HVAC service provider, with over 55 years of experience in rooftop AC repair, maintenance, and installation. We specialize in commercial cooling services and work on all types of HVAC and cooling systems.
Our technicians handle repairs, maintenance, and installations for both commercial and industrial properties, delivering reliable, prompt service every time. Each technician on our team is highly trained, professional, and committed to quality workmanship.
We offer free estimates for repairs and installations, making it easy to get started. Our experience includes all major HVAC brands and equipment—chillers, air handling units, heat pumps, boilers, building automation systems, and specialized RTU installation services.
We understand the unique needs of Sioux Falls businesses and provide HVAC solutions designed to perform through South Dakota’s demanding seasonal conditions.
3rd Generation Family-Owned Business
24/7 Emergency Service
Most Experienced Technicians in the Industry
Local Reviews
“Even on the jobs on Saturdays were executed very nicely and successful. Their team did a great job!”
Thomas Gottschalk – WestRock Corrugating Division
"The guys that they had come out here and do the work did a really good job and they were open to whatever I needed."
Kendall Adler – Midwest PMS LLC
COMMERCIAL HVAC SERVICES FAQS
Do you offer rooftop AC (RTU) replacements for commercial buildings?
Yes. Rasmussen Mechanical Services specializes in RTU (Rooftop Unit) replacements, offering high-efficiency units from major manufacturers to fit the specific needs of your facility. Our services include safe removal of your existing unit, professional installation, and thorough system testing to ensure optimal performance. We provide transparent pricing and free estimates, giving building owners and facility managers confidence from start to finish. Give us a call to discuss availability and options as we determine the best commercial HVAC system for your facility.
Why is regular HVAC system maintenance important for rooftop units?
Routine maintenance is essential for efficiency, reliability, and system longevity. Our programs include detailed inspections, filter replacement, system cleaning, and early detection of issues such as refrigerant leaks or worn components. Preventive maintenance helps reduce downtime, control energy costs, and extend equipment life—especially important during peak cooling and heating seasons in Sioux Falls.
Do you provide indoor air quality solutions for commercial buildings?
Yes. We offer a full range of indoor air quality solutions, including air purification systems, ventilation services, and ongoing equipment maintenance. Clean, healthy air improves comfort, productivity, and overall building performance. Our team customizes solutions to meet the specific needs of each commercial facility.
What about other types of HVAC equipment?
Our service techs are experienced with all types of commercial HVAC equipment, including air conditioners, furnaces, boilers, chillers, and high-efficiency systems. We provide comprehensive heating and cooling services such as system sizing, preventive maintenance, emergency repairs, and efficiency upgrades. Reliable boiler and furnace service is especially critical during South Dakota’s cold winters, and our team is equipped to keep your systems operating safely and efficiently year-round.
Are you available 24/7?
Yes. We understand HVAC issues don’t follow a schedule. That’s why our team is available 24/7 to respond quickly with reliable repair solutions that minimize downtime and protect your operations. If it's not an emergency you can call us and we can schedule service when your unit needs it.
HEATING AND COOLING LOCAL EXPERTS
When it comes to commercial HVAC repair, the comfort and safety of your building’s occupants come first. Our technicians service all types of commercial systems, including rooftop units, heat pumps, and air conditioners. Unexpected breakdowns can disrupt operations and increase costs, which is why we offer emergency repairs, routine maintenance, and long-term service plans.
Our maintenance programs help prevent costly failures, extend equipment life, and maintain peak performance. Whether you need a fast fix, full system evaluation, or expert guidance on a new installation, Rasmussen Mechanical Services delivers efficient, cost-effective HVAC solutions tailored to your Sioux Falls facility. Across all our locations, our commitment is to keep your commercial HVAC systems running efficient while maintaining the quality and reliability of your equipment.
SCHEDULE YOUR SERVICE TODAY!
GET THE HELP YOU NEED FOR ALL THINGS MECHANICAL