ERV vs. positive pressure vs. none
Leaky 1800’s log home. Radon issue being worked on via traditional methods with mixed success. Radon issue improves dramatically when windows are open — I assume this is dilution and perhaps also pressure equalization?
Wondering if ventilating may help dilute radon w/o the windows open energy penalty, especially in winter. If so:
1. Positive Pressure Ventilation — perhaps a dehumidifier ducted to draw outside air — might the positive pressure help reduce radon draw and simultaneously dilute the radon issue?
2. ERV — does a balanced system ever make sense in a leaky home? The house also has some negative pressure devices (bath fans, boiler, wood stove insert). Goal here might be simply to dilute bad air whereas a positive pressure system may dilute but also prevent tendency to draw bad air in.
Is there a drawback to positive pressure in such a home?
Would you go with 1 or 2 ? or neither? I have a few follow-on questions depending on best course. Thank you.
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