Called on Memorial Day with my air not working, knee surgery the next day in 90 degree heat outside and now 85 degrees inside, NORTHERN jumped into action to schedule me the next day, ordered a part and to schedule a return visit. So very impressed with this company. From Kate in the office and the tech, Eric that helped get my air conditioning up and running truly an exceptional staff. Eric explained everything thoroughly, very professional and courteous. Can not say enough about this company!!