Need ventilation suggestions for remodeled office – it’s too tight!
Hi all –
I’ve successfully converted my residential 20×20 garage into a beautiful office and photo/video studio. It’s beautiful and I’m very happy except for one thing: lot’s of off-gassing, VOCs, and chemical smell. I’ve had the windows open for most of the last year and still if I close them, the odors build up over a few hours. Air testing shows high levels of VOCs, and detectable formaldehyde – likely from the spray foam or polyspartic floor covering but hard to say.
With the windows open, my consumer level AIQ monitor says the air is OK, so I’m thinking that adding a good ventilation system might do the trick. I have a ductless mini-spit installed, so this system will have to be added from scratch, i.e. no ducts or other system to integrate into.
I see a lot of people doing bathroom fans or ERV’s like Twinfresh but I worry that they may not be enough for this space. Yes, it’s only 4000 cubic feet (20 x 20 room with a cathedral ceiling) but there really is a lot of offgassing in the room and I want to install a pretty substantial ventilation system.
Another aspect is noise. This is a working video/audio studio, so quiet is a must. My Fujitsu mini-split is quiet enough, for sure, and I have exposed rafters and could easily hang/mount an ERV inside and run some 4 inch ducts with no trouble at all. No cosmetic issues to worry about – there are already lights and wires everywhere up there.
I’ve been reading around this forum and am considering exhaust fants with passive inlets, some through-the-wall ERV’s like a pair of Twinfresh units, and also installing a more beefy ERV up on the ceiling and running 2 exposed ducts to the corners of the room.
Any advice much appreciated. For the record, I am hoping to overpower this system a bit, in terms of CFM, because I have a known air quality issue (confirmed by professionals) and want a definitive solution.
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