thankyou fan in a can.....

jonny88

sprayfoamed insulated house as tight as tight can be,home owner disconnected carbon monoxide alarm as it annoyed him when it went off.sealed boiler room,200,000 btu boiler .fresh air was via a 10"x3" duct.i put a pieceof paper on boiler and it got blown back from chimney backdraft.our temporary solution was a 6" line from outside house into boiler room hooked up to fiel control cas-4 fan in a can.my first time using it and am very impressed.

BillW

Those can be a big help!

Outside combustion air is often needed, especially in the tight"energy efficient" homes.  People need fresh air, too, and Energy/heat recovery ventilators work for them.

RJ_4

good product

 have been using this fan on my commercial jobs for years   in some cases i have 2 . some basements just dont have enough space for gravity fed ducts for combustion/fresh air    Field controls also makes a good barometric damper