Hi. I recently got my glowforge pro and absolutely loving it. Currently I’ve been venting out the window using the 4” exhaust hose I received with the machine.
I’ve been researching about permanent ventilation through wall in my home office on second floor.
I plan on adding a 4 to 6” adapter to printer exhaust and from there everything will be 6” i.e., exhaust hose (8ft), 6” AC infinity fan, AC infinity backdraft damper, vent duct connector | wall | 6” dryer vent hood.
Do I still need a blast gate? Or backdraft damper would be enough? I live in Seattle and I am worried about colder months since we get snow every year now. (I looked at getting a plug for hole in wall option but it looked complicated taking it out every time using the printer.)
I have both a vent with a flap and a blast gate. I am more concerned with the humidity in the summer when it is 90 degrees and 90% humidity outside and 70 degrees and 45% humidity in my basement. Without the blast gate, i am concerned about condensation inside the fan and GF when the hot humid air hits equipment.
If you add a bend into your system you can ignore rain in pretty much any non-flooding situation, and the total run length you’re looking at the bend would be largely irrelevant from an airflow-restriction point of view.
Just bend down a couple inches before going into the wall, make sure the wall penetration has a slight slope to the exterior (to avoid water pooling at the elbow) and no rational amount of rain will reach the GF.
…heck, even just adding the slight slope would suffice in most (all?) cases (and is a good idea in any case) but I am generally a fan of pointless over-engineering so why not go for the gusto and add a bend.