I am currently Sales Manager for H.A. Thompson & Sons in Bismarck, ND. Our Mechanical HVAC - (Heating, Ventilating, & Air Conditioning) - Services are available in the entire state of North Dakota, Western Minnesota, Northern South Dakota, and Eastern Montana. We perform system upgrades, repair and retrofit services, as well as maintenance agreements to ensure that mechanical systems perform efficiently, safely, minimize breakdowns, provide good comfort, and extend the useful life of the equipment.We can be contacted at 1-800-238-5462.Specialties: HVAC Maintenance Agreements - we maintain the mechanical systems of over 700 buildings in our territory.