Simon Topete
As always Rasmussen pulls through with the great work they do for our company. Highly reccomend there service for your needs. Great guys to work with!
Business ProfileHVAC Companies in Sioux City, Iowa
Rasmussen Mechanical Services
Rasmussen Mechanical Services
Rasmussen Mechanical Services is a family-owned mechanical contractor serving commercial and industrial facilities in Sioux City and surrounding areas. It has provided commercial HVAC service there since 1970, with technicians available 24/7.
Last Updated October 3, 2026.
Business Highlights
- Rasmussen Mechanical Services is a third-generation, family-owned business.
- It lists a license to perform boiler repairs in Sioux City.
- It holds R, S, H, U and PP stamps for pressure-vessel repairs.
- Its technicians are factory-trained and certified.
Service Area
Nebraska, Iowa, South Dakota, Kansas, Colorado, Missouri, Minnesota, western Illinois and western Wisconsin.
Active Business Listing
Rasmussen Mechanical Services is one of 11 HVAC companies ProsGrade lists in Sioux City, Iowa.
Active
Public local listing
Listing details
12 services listed, including Commercial HVAC repair, Complete HVAC replacements and HVAC system maintenance. Open 24 hours, 7 days a week. Rated 4.5 from 11 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How Rasmussen Mechanical Services compares with the other 10 HVAC companies on ProsGrade in Sioux City, using public Google ratings and review counts.
- One of 11 Sioux City HVAC companies on ProsGrade.
Trust Signals
Open 24/7 for commercial HVAC service calls in the Sioux City area.
Services Covered
12 services- Commercial HVAC repairAll major brands; chillers, rooftop units, air-handling units, boilers, heat pumps and building automation systems.
- Complete HVAC replacements
- HVAC system maintenance
- Boiler and furnace service
- Indoor air quality solutions
- Boiler repairBoilers, pressure vessels and water heaters of all sizes.
- Boiler burner service
- Boiler maintenance and inspection
- Boiler installation and replacement
- Emergency boiler rentalsIndustrial and commercial boilers in a range of sizes and manufacturers.
- Compressed-air service and repairRotary screw, reciprocating and centrifugal compressors; all major brands and types.
- Mechanical construction and design-buildProcess piping, HVAC integration, sheet-metal fabrication and ductwork, and boiler, chiller and pump installation.
Reviews
What customers say
Customers praise the work and service; one customer says the team is there when needed. One customer reports calling four times to have refrigerant added after an AC compressor replacement; the unit later blew hot air again, and the customer says they were told they were on the company's “do not service” list.
Customer Reviews
Mr. Semi MikeG
For semi truck shipping and receiving on 5th street at the end of street Overnight parking yes on street Good customer service In and out
Roger Walker
Randy, Allen and there team are awesome! They are always here when I need them, and do excellent work!
Jen Jen Clarey
great service company, would highly recommend
Nikki McLaughlin
After paying 3k for an AC compressor replacement, I have had to call the 4 separate times to come & fill it with Freon. The 2nd or 3rd trip out the technician had told me he saw something originally that probably should've been replaced as well...a coil or something, & that he had replaced it this time so we should be good. That was probably 4 calls ago. I called on Monday & told them it was ridiculous. They told me they would get someone to come look at it. Tonight we called because it's again blowing hot air & we were told we are on the 'do not service' list. Extremely Poor customer service.
Write a Review
Share your experience with this business. Reviews are moderated before they appear publicly.
Frequently Asked Questions
Does Rasmussen Mechanical Services provide residential services?
It does not currently provide residential services.
What size projects does Rasmussen Mechanical Services take on?
Projects range from single-day repairs to multi-month renovations or new construction.
How long can a minor HVAC repair take?
Most minor repairs can be completed within a day, depending on the equipment, parts and available manpower.