Spray foam and HRV system questions
Hi I have a raised ranch.
I am gutting the first floor and adding a 2nd story addition. With full attic.
I am going to use open cell spray foam.
All walls and attic roof lines. After the addition I will use it to finish the basement.
I am running a 90+ efficient furnace for the 1st floor and basement.
Which does draw fresh air into it
I am planning to get a similar unit for the addition
3 baths with fans, 1 600 CFM range hood
Would I need to install a HVR unit?
I live in the Midwest. I heard stories about windows icing up and having to open windows.
I would hate to have to install one later.
Would it be wise to just do it now?
I have been doing some reading and talking to people I know that have had issues and people that have the HVR unit and no problems.
Any help would be greatly appreciated.
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