Thelen Heating & Roofing

We provide comprehensive HVAC installation services for residential and commercial properties. Our certified technicians install high-efficiency furnaces, air conditioners, and heat pumps. Our systems deliver energy savings while maintaining consistent comfort levels throughout your space.

Our commercial roofing division handles installations, repairs, and maintenance for businesses. We work with built-up roofs, rubber membranes, and metal standing seam systems. Our team ensures watertight protection while meeting specific building requirements and codes.

Preventative maintenance programs help avoid system failures through regular inspections. We offer customized schedules from annual to quarterly visits. Our technicians check equipment operation, clean components, and identify potential issues before they become emergencies.

Custom sheet metal fabrication services create tailored ventilation systems for commercial and industrial applications. Our in-house facility produces ductwork and specialized components to exact specifications, ensuring proper airflow and system efficiency.

We design and install complete ventilation solutions for residential and commercial buildings. Our systems improve indoor air quality through proper air exchange while maintaining energy efficiency. Services include air exchangers, exhaust systems, and custom ductwork installations.

With decades of industry experience, Tim Haglin leads commercial operations and strategic growth initiatives at Thelen Heating & Roofing. His expertise in large-scale HVAC projects ensures clients receive optimal system designs and implementation.

John Thelen Jr. oversees residential sales and project estimations. As a second-generation leader in the family-owned business, he brings deep product knowledge and customer service excellence to home comfort solutions.

Mike Childs coordinates complex HVAC and roofing projects from planning to completion. His 15+ years in construction management ensure timely execution while maintaining strict quality control standards for commercial clients.

Steve Isle directs all commercial roofing operations with specialized expertise in industrial roof systems. He manages installations and repairs for large facilities while ensuring compliance with safety and building codes.

Gunnar Niemeyer leads our 24/7 service team handling emergency HVAC repairs. With extensive technical training, he ensures rapid response times and effective solutions for both residential and commercial heating and cooling issues.

We provide complete residential HVAC solutions including furnace and air conditioner installation, maintenance, and emergency repairs. Our services cover heating, cooling, air purification, and ventilation systems.

Yes, we provide 24/7 emergency HVAC and roofing services with technicians available for immediate response to urgent situations.

We install built-up roofs, rubber membranes, asphalt, gravel, and pre-finished metal standing seam roofs for commercial properties.

Regular maintenance prevents system failures and extends equipment lifespan. Our contracts include priority scheduling and comprehensive system inspections to maintain optimal performance.

We serve the Brainerd Lakes area and throughout Minnesota, including Twin Cities, providing HVAC, roofing, and ventilation services for residential and commercial clients.

Contact us at (218) 829-1491 or through our website to schedule appointments. Emergency services are available after hours through our dedicated line.

Great experience with Thelen working on our mini-split. Knowledgeable and easy to work with. Our unit was still under warranty and they did all of the communication with the manufacturer to get a new unit right away and it was installed the day the unit arrived.

Thelen Heating and Roofing made a special, sheetmetal boot to connect the range hood to the ducting going up through the roof. The complex piece involved offsets and was completed in less than two hours. The final product looked very professional and was quite reasonable in price. This was the second or third time that Thelen has been the quick and professional solution to a particular ducting problem that I presented to them.

Beware as you will be paying for drive time for the service from the time the service agent leaves their office to the time they return to the office; and not just the time they are at your house!? Absurd! Thelen's does not make you aware of this. To have a service come to adjust the fan speed of my furnace cost $200. Very disappointed -- and to top it off, their billing agent was extremely rude on the phone. There are plenty of competing businesses in this area to consider. No thanks, Thelen.

Thelen completed FOUR projects on my building totalling over $30,000. All bills were paid promptly. TWO of the projects were less than satisfactory. The mini split installation required almost $550 (out of my pocket) to local service contractors for modifactions over the next year to correct problems directly related to the Thelen installation. A zone heating modification never worked properly after a $2500 (paid) installation, Two Techs spent four hours reviewing the problem and stated that the system design was was incorrect.

The system design was done by Thelen! I told this to the technitians. For this assesment I was billed $624! I refused to pay for this "trouble call" and told them so. The office/account manager then sent this bill to a collection agency. I documented all of the problems and expenses and provided it to the management who refused to discuss the issues until I paid the collection agency. Now I am dealing with a collection agency for a $624 bill after spending $30k here.