Air Conditioning Companies in Williston, ND

Comprehensive list of commercial and residential air conditioning companies in Williston, ND offering installation, repair and maintenance services.

Business Listings

Mon-Dak Heating & Plumbing. was set up in 1975. With two locations to serve you better, Williston, ND & Medicine Lake, MT, we currently have developed into one of the most respected plumbing & heating contractors in Northwestern North Dakota and Northeastern Montana. Quality products, dependable service and most of all, well trained and dedicated employees are the key to our success.


Welcome to Advanced Mechanical. serving Bismarck, North Dakota and surrounding areas. Our experienced staff of skilled specialists supplies expert new installation, service, and repair of HVAC systems and plumbing for homes and businesses. We provide service and installation of furnaces and central air conditioning units in mobile homes.


Making your comfort our main priority! Call Larry or Mark today regarding one of our attractive financing packages today! Additional Tax Credits available for high efficiency air conditioners too!