I have no idea if this is legit, but the risk / reward is quite good. If you are looking for a multiport ventilator, the price is hard to beat, less than $40 delivered. https://www.walmart.com/ip/Systemai...i-Port-Ventilation-4-Points-404-Cfm/977840124 Compare to Amazon at nearly $500! https://www.amazon.com/Fantech-CVS-400A-Multi-Port-Ventilation/dp/B003E5Z22Y Only 4 left, I thought about buying them all to flip on eBay.
It is central ventilation. I will be putting it to both bathrooms, the kitchen, and the living room, with makeup air supplied behind the wood stove.
Oh, I use a whole house fan. It works well. We open the windows a crack and turn the fan on. It is so powerful we can feel the air being sucked in all the windows. Cool Attic 24 in. Belt Drive Whole House Fan with Shutter-CX24BDM-2SPD - The Home Depot
