Heating, Cooling, Plumbing & Electrical


What Theis Services Can Do For You
Go to Heating


Expert Installation and service of residential heating systems. Comfortmaker products + 10 year parts limited warranty.

Go to Cooling


Air Conditioning installation and service with attention to detail and comfort.

Go to Plumbing


Water heater installation & repair, Heat Plumbing, Main water lines, Well Pumps, Main Sewer Installation & Repair + Backhoe services.

Go to Electrical


Residential electric work from installation to repairs. Theis Services delivers quality you can trust from a local expert.


Theis Services is locally owned and operated
Quality Installation and Repair from a Local Expert

Theis Services proudly serves Tiffin and Northwest Ohio delivering air conditioning, heating, electrical and plumbing services. From new installations to repairs, you can trust the experts at Theis Services to do the job right and to stand behind our work. Theis Services offers a No Hassle replacement limited warranty and 10 year parts limited warranty. We only use the best products available with Comfortmaker air conditioning and heating products.