Ventilation to cool down poorly-insulated house
My wife and I recently bought an old (1880's) two-story duplex with separate apartments on each floor, each about 750 square feet and very poorly insulated. We have long-term renovation plans, but our primary near-term complaint is the inability of the apartments (especially upstairs) to cool down at night -- even with our quite cool summer nights here in Northern Colorado and all the windows open. We don't want air conditioning, but we would like to improve night-time ventilation.
I've considered a whole-house fan, but the roof has no soffit vents and only one small static vent at the peak (hip roof on all four sides) -- not enough (I think) to support a whole-house fan without making some changes to the roof (money tight right now). The floor plans in both units are not very open, either, which I think is preventing natural cross-ventilation via windows. Ideally, each apartment would have some individual control over the degree of ventilation.
I'm thinking maybe a window-mounted exhaust system -- or, perhaps, a robust bathroom exhaust fan (or maybe the two in tandem?). The upstairs apartment bathroom needs an exhaust fan anyway...
Does the GBA community have recommendations? Suggestions for particular products? Appropriate rate of air movement? Any help very much appreciated. Thank you.
Posted Jul 24, 2014 8:36 PM ET
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