Like I said, depends on the finish. Both Glitza and Basic recommend "air transfer" to carry off any solvents and excess moisture that could be airborne then settle back down on the fresh finish, causing problems. Run the AC up to the point of applying the finish, then turn it off while applying the finish and until the finish has become non tacky, about one hour. Then open doors windows, etc. and turn on HVAC to circulate air and bring fresh air in and carry moist, solvent laden air out. OMU's are a different story as they take much longer to become tack free, typically about four hours or so.
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