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For over 35 years, Jensen Mechanical has been more than just a heating and cooling service—we’ve been your neighbors.
Founded in 1987, we are proud to be a family-owned and operated business dedicated to serving the Grinnell community and surrounding areas.

Get to know us

Services

Since 1987, Jensen Mechanical has been the trusted local provider for all your heating, cooling, and new in 2025, plumbing needs. Whether you’re managing a large commercial property or simply need a furnace tune-up at home, our family-owned team delivers reliable, expert solutions with honest, personal service.

Design & Installation: Customized system design and installation for new construction, build-outs, and system replacements (including rooftop units and VAV systems).
Maintenance Contracts: Comprehensive service agreements to maintain system efficiency, extend equipment life, and prevent costly breakdowns.
Repair & Troubleshooting: Rapid response and expert diagnosis for all major commercial heating and cooling equipment.

Heating & Furnace Services: Complete installation, repair,
and preventative maintenance for furnaces, boilers, heat pumps, and ductless systems. Stay warm through the toughest winters.
Cooling & AC Services: Fast and reliable repair, installation, and seasonal maintenance for central air conditioning and ductless mini-split systems.
Indoor Air Quality: Solutions including air purifiers, humidifiers, and ventilation services to ensure the air inside your home is clean and healthy.

Projects

Residential Applications

In the last 10 years, Jensen Mechanical has installed 40+ new construction builds and 200+ residential change outs each year. Now offering plumbing services!

Industrial

Jensen Mechanical proudly serves as the
main service provider for local industry/
factories from small tune ups to major
industrial additions/renovations.

The Knoxville Suite Tower at Knoxville Raceway completed in 2025

Commercial

Jensen Mechanical takes on 15-20
commercial projects per year. The Knoxville Suite Tower at Knoxville Raceway was designed and built in house.

Testimonials

The qualified and dependable Jensen team is priceless to the 400-plus residents who rely on comfortable heating and cooling. Tracy has the qualified staff and experience to take care of all our HVAC needs.

- Jack Morrison, Mayflower Homes

Jensen’s recommended we replace our old, non-functioning zone systems with proper sizing and airflow properties. My wife, sons and I have all appreciated the ease of use and everyone is comfortable.

- Skip Lowe, Grinnell Resident

In 2008, we changed out our old commercial low efficient Air Handlers throughout the building. Jensen was able to complete the work on time and on budget, all while handling during normal working hours.

- John Guthrie, Grinnell Mutual Reinsurance Company

Jensen Mechanical proudly services and installs leading brands in the HVAC and plumbing industry, ensuring our customers receive reliable, high-quality equipment backed by the best manufacturers.

Affiliations