# w2 a/ H) W! V# \9 QHeat Recovery Ventilator (HRV):# c9 X+ m" x* t7 X1 Q1 Y
The heat recovery ventilator (HRV) is the proper choice in colder climates where there is excess humidity during the heating season, since it can eliminate it.& e( ?0 s) z: x) X" k) W
The HRV keeps the home supplied with a steady flow of fresh outdoor air. As stale, warm air is expelled, the heat recovery core warms the incoming fresh, colder air before it is distributed throughout the home. 6 F. o# b) P# {. WThe result is a constant supply of fresh air, no unpleasant drafts and greater home comfort. ) v' Q% t+ y$ U* a% b1 Z/ z
其实这里房子冬天室内湿度都很低,一般在30左右,不存在湿度过高的问题。主要问题是窗户保温不好。外面温度很低时,室内窗户还会结冰。我的解决办法是:remove inside sidings for all windows and doors, redo undulations and seals; in summer time re seal out side frames for all windows and doors. Then increase the temperature inside. It helps a lot. But the best way is to replace with new windows and doors with good insulation. Add more insulation for the house if necessary.