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Old 08-23-2008, 09:42 AM  
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Default How to create air change for a house in a cold climate

We have an old 1950' house that we totally re-insulated to a R 30 in the walls ( with spray foam) and R 60 in the attic. This should definately help with our energy consumption however now that the house is so tighly sealed I need to find a way of creating some air change in order to avoid humidity and stale air problem. I would appreciate any advice on what to use and how much it cost.



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Old 08-23-2008, 10:58 AM  
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Welcome Scally:
Research Products makes an air exchange unit; however, and inexpensive way to make the exchange is to put a 3" pipe into your return air plenum from the outside. That way the unit can condition the air before it comes into the living space and the extra air will keep a positive pressure inside making the small leaks blow out rather than leaking cold air in.
Many government buildings use a similar system to keep fresh air in the building and keep the over pressure. In my home state of Kentucky they are required to use 14% make-up air at all times. It really works well.
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Old 08-24-2008, 08:01 AM  
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Check out a HRV or a ERV
These ventilating units will not only bring in fresh air but will also exhaust any stale air
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