9 c* {" X; U N$ E. PHeat Recovery Ventilator (HRV):4 u8 b( P- N1 J: D" R: J$ L
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. 8 h$ s: J# n% D2 h) UThe 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.& D) `4 P `' |) v! g) N
The result is a constant supply of fresh air, no unpleasant drafts and greater home comfort. - ^! l4 u" x+ S% ~- ~/ u# g* S' K
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.