I'm working on a couple of ventilation issues in my home. I've added a half bath and have installed a new vent. Can I connect this new bathroom vent to the existing vent line that goes to the roof, considering the bathrooms are adjacent?
Also, I have a microwave vent and a range hood vent now. The range hood vent was already in place, but the microwave is above the range and we don't plan to use its vent at all. Can these two vents be connected to the same roof vent?
2 Answers
It's generally not a good idea to tie vents together. Each vent system needs to work independently. Since your microwave isn't actually over the range, you're unlikely to use that vent anyway. But remember, the range hood definitely needs to be vented outdoors. As for your bathrooms, it's best if they have their own dedicated vents, especially because one of them is just a small 'fart fan' that doesn’t drain moisture like a full bath would.
I agree with the previous comment about keeping the vents separate. If the range hood is already vented to the roof, that's great. If you don't plan on using the microwave vent at all, you might consider either not connecting it or venting it out to the attic. But venting to the attic isn’t ideal either, so keeping it separate from the range hood is probably the safest bet.