VENT-AXIA PIV FAN UNIT 500W Bought it used off ebay when I bought our victorian house. Read too much online about damp victorian houses. Turns out we had a drain issue causing a damp patch and the PIV unit was not needed. Used Filters and some ducting included. Ideal for getting rid of condensation, mold etc Clearing out the cellar so needs to go.
eBay