Solution for whole house humidity problem, CT, Zone 5a
Of the myriad home issues I have dealt with, the humidity problem is a constant. While I am thankful that my house naturally falls into the 40-60% range in winter, in the summer it is regularly well over this threshold. [I have written before about my incredibly leaky 1950’s ranch house.]
To control the moisture in the home currently, there is a Santa Fe dehumidifier running full-time in the plastic-covered crawlspace, and two Pure HEPA filter/dehumidifiers running on the main floor, along with a Panasonic WhisperGreen in the bathroom (all three running all day). [The house is a 1400 sq ft ranch.] There are two window air conditioner units, one at each end of the house. All of this keeps us relatively comfortable and within the 40-60% humidity range. However, it would be nice to ditch the dehumidifiers on the main floor.
In the winter, the windows are covered in “shrink wrap” and it is incredibly effective in terms of comfort. The plan is to replace the windows (single pane with metal storms) after the Covid crisis, as well as add an ERV, which should take care of the humidity problem, along with other issues.
Until then, would it help reduce the humidity to a noticeable degree if I put the shrink wrap back on the windows? One window per room would need to be uncovered to allow for fresh air at night or on cool days; would the non-shrink wrapped windows defeat the purpose, or – as Martin pointed out in an article regarding a crawl space that could only have plastic on a portion of the floor – would the percentage covered basically equal the percentage of humidity reduced in the home?
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