Corey Valaskey PE

Estimator/Project Manager

Contact us

24/7 Service Available:


1500 Radford Rd.

Dubuque, IA  52002

Fax: 563-583-7365

    Bob Reisdorf

HVAC Dept. Manager

  Alison Geisler

Service Manager

        Bill Maus

Roofing Estimator

Celebrating 125 years in Business!

*Experienced Staff- our Technicians have all been working with us for 15+ years.

Jason Kraft

Service Tech.

Mark Sullivan

Service Tech.

Carl Heidesch


Our Staff

   Tom Hunt

Service Tech.

   Tom Leicht

Shop Foreman

          Jim LaPage

Fabrication Department

Heating and Cooling in Dubuque and Tri-State Area

About Us


 * Commercial and Residential heating and cooling installation and Repair

* Serving the Dubuque and Tri-State area.

*Commercial Roofing

*Sheet Metal

Geisler Brothers


Est. 1892

Bryce Nannenga

Roofing Manager

George Hannaman

  Project Manager

Todd M. Geisler