“Minnesota is normally thought of as cold place, but in reality, it goes through significant hot and cold climate changes yearly, which affect air conditioning (AC) systems in radical ways. AC systems within the state all have to contend with one crucial elemental factor: water.
Indeed, a lot of major efficiency problems with air conditioners revolve around water concerns. Minnesota is subject to high humidity in the hot summers, and ice and sub-zero temperatures in the winter. These climatic conditions stress AC components in harsh ways.
While idle through the winter months, air conditioning systems can accumulate “gunk” that affects everything, from copper coils to fan motors. These problems have to do with water and water vapor collecting on surfaces. “