520 W. South Park Avenue
Oshkosh, WI, 54902
920-231-5530

"We service all makes and models."

Thanks to Jay & the installers for the excellent service getting my tenants' heat stove put in. I'm very pleased with the service and I'm happy to say that GMS will be my new heating/cooling services for all future needs. Thanks again.

January 2025

Client Testimonials

Brian has always served us well. His humor, positive attitude and quality work is very much appreciated. He's my "Employee of the Month."

Norma
I am asking the Lord to bless you many times over for what you did for me. Your thankful customer.

Carol
Thank you. Excellent Service.

Bruce

pwilz@gartmanmechanical.com

520 W. South Park Avenue