Based in Mandan, GOS Enterprises LLC is a top-notch HVAC E-commerce that offers maintenance and installation of central air conditioners, boilers, furnaces, and heat pumps. Before starting any job, I’ll provide my certifications upon request so that you know I'm on the up and up. Any contractor worth their salt will do the same, so you can be sure you’re hiring a top-quality worker. I also sell a full range of HVAC units; take yours! If you have any questions, contact me at (701) 946-2619.