Condensation on windows
I am a HERS rater, back in the summer, i tested a house for a builder.
built about a year ago and lived in.
â€‹theyâ€‹ had a problem with condensation â€‹collectingâ€‹ on windows
windows face north, and air changes in house were 2.4ACH
they had one continuous fan that was not working
so they replaced this fan which is guest bath, off kitchen, near laundry.
this now is supposed to run at 60 cfm continuous.
They replaced a second fan in the master bath to run continuous at 50,
occupied at 100cfm. â€‹both on the main floor, there is no second floor,
but a finished walk out basement.
exhaust rate now meets ashrae standard of 110 cfm,
so, thought problem was fixed, just got an email,
they want me out again to diagnoses because
windows are still condensating.
â€‹any ideas that can help ?
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