1 P+ G5 \: ~0 N1 a# z5 X$ \Heat Recovery Ventilator (HRV): 9 u* D( G& E8 R- @9 n9 q1 kThe 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. 7 U$ |7 b' ^. q$ q5 d9 `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.! [* m7 P0 _" B5 F+ d; S
The result is a constant supply of fresh air, no unpleasant drafts and greater home comfort.' m9 I w9 q( U& q3 }- H% w
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.