How to stop win­dow con­den­sa­tion

The Hamilton Spectator - - REAL ESTATE -

If beads of wa­ter run down the in­side of your win­dows dur­ing cold weather, it's not nec­es­sar­ily a sign you've got bad win­dows. In fact, your win­dows are prob­a­bly do­ing just what they're sup­posed to do ( keep­ing out­door air out­side.

Wet win­dows can sim­ply be an in­di­ca­tion of two dif­fer­ent but re­lated prob­lems. In­door hu­mid­ity lev­els in your house may be too high, or the qual­ity of air in­side your home prob­a­bly isn't what it should be.

The so­lu­tion to both th­ese is­sues is in­creased ven­ti­la­tion. Ex­per­i­ment by run­ning ex­haust fans and range hoods longer and more of­ten than usual, while also open­ing a cou­ple of win­dows an inch or two. As stale, hu­mid air is forced out­side, fresh, low-mois­ture air is drawn in­doors.

With suf­fi­cient ven­ti­la­tion, in­door hu­mid­ity lev­els will drop, your win­dows will dry out, and the qual­ity of air you breathe will im­prove. The only trou­ble is heat loss ( you'll be los­ing pre­cious heated air to the out­doors.

Want to have fresh air with­out rais­ing your heat­ing costs? A ven­ti­la­tion ap­pli­ance called a heat re­cov­ery ven­ti­la­tor is the so­lu­tion. It draws fresh out­door air into your home while re­cov­er­ing most of the heat from stale, hu­mid in­door air that it ex­pels out­side. A prop­erly in­stalled and op­er­ated HRV will solve win­ter­time win­dow con­den­sa­tion and boost in­door air qual­ity.

If you in­stall an HRV, make sure you hire some­one who's prop­erly qual­i­fied to do this type of spe­cial­ized work. The Cana­dian Home Builder's As­so­ci­a­tion can help you con­nect with a heat­ing and ven­ti­la­tion pro who can solve your con­den­sa­tion prob­lems and boost in­door air qual­ity. Find more in­for­ma­tion at www.getit­in­writ­ (NC)

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