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New Berlin






Menomonee Falls


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New Berlin




Menomonee Falls




Commercial Services by Thielmann

At Thielmann & Son we understand that every business is unique, and therefore, so too are the heating and cooling systems for those businesses. We also understand that having a heating and cooling system that does not function properly can not only cost you customers, but it can also greatly affect the productivity of your employees. The experienced professionals at Thielmann & Son have installed and maintained HVAC systems in Churches, Schools, Restaurants, Banks, Credit Unions, Mini-Malls, and Multi-family units. Let the experts at Thielmann & Son handle all of your commercial heating and cooling needs.

Maintenance/ Tune Ups

Unexpected breakdowns can have a huge influence on your bottom line. Having annual maintenance performed on your furnace, air conditioner, or roof-top unit will help to extend the life and efficiency of your system.

New Construction/ Remodeling/ Build-outs

Whether you are remodeling office space, doing a build-out for a new tenant space or building and new facility, the experts at Thielmann & Son can handle your commercial project. From Plan and Spec to Design/Build we can work with you to value engineer a system to keep your business comfortable and within budget.

Equipment Repair

Don’t allow equipment breakdowns to affect your business. We have service technicians available 24 hours a day 7 day a week to get your system back up and running.

Equipment Replacement

If there comes a time when your current equipment repairs start to nickel and dime you or the equipment simply cannot be repaired, the experts at Thielmann & Son can work with you to replace your equipment quickly and efficiently to limit any down time to your business.