ERV's and Cold Climates

There is a perception that ERV’s handle a lot of moisture so they freeze in cold climates. Our SMART ERV has a built-in frost control feature. The frost control is achieved by reducing the amount of cold intake air relative to the warm exhaust until the temp differential is achieved again at the wheel. It all has to do w/ the indoor RH and the outdoor temp and the set-point on the ERV (which goes to -10).