Hello, I plan on installing two Delta bath exhaust fan (sorry don't have dimensions, CFM or model # handy but they're definitely bigger than the small Broans....I'll post this after I get home) into two bathrooms. I removed the humidity sensor (per provided instructions) as the manufacturer support said that was the only way to get it to work in tandem with the light switch like I want. (otherwise it ONLY works based on humidity, which I assume doing a #2, or a person breathing sitting on the toilet, would not trigger?)
Anyhow, as you can see from the photos (I'm shooting from the doorway on both), there's no avoiding me installing it within a foot or so of the A/C vent. (to both be centrally located in the big bathroom, and in the small bathroom, to drop it in place of the existing one) I was initially worried about the exhaust fan sucking out A/C air (I do have those A/C vent louvers closed, though some still leaks out). But someone here told me the bath fan probably wouldn't suck out much A/C at all, since cold air fails and the humid hot air (that you want to remove) will rise to where the exhaust fan can get to it. So if that's the case, I should not worry about it being so close? However, the bath fan is supposed to move a lot of CFM so it could matter? Some suggest using plastic or cardboard to block off the A/C vents, so I could do that. (my 40 yr old Trane's air pressure is pathetic anyways) The other obvious option to me is installing it directly above the shower. I don't know how smart that is, nor if it violates any National or Arizona electrical or HVAC code in any way. I'm sure it would be great for directly sucking out shower mist, but probably not ideal for sucking out toilet odors, especially with the shower curtain drawn as most people prefer to keep it?
The bathroom with the diffuser vent is tiny. So small you have to close the door to sit on the toilet. I estimate the other bathroom is maybe 10 feet from doorway to outside wall and maybe 6' at most from side to side walls. If it's critical I'll measure it, let me know. Also the drilled hole next to the A/C vent marks where the attic exhaust roof jack was installed, and the toilet is to the left of the vent (below the towels) in the larger bathroom. In the tiny bathroom it's between the potted plant and the shower. If I put it above the shower in either bathroom, the connector duct in the attic would need to be angled to reach the roof jack a few feet away.
Any advice from either electricians (on the code) or HVAC guys (on the location)? I wasn't sure if I was allowed to post to both forums, but maybe I can post in Electrical asking if they can read this post in HVAC?
few feet away.
Anyhow, as you can see from the photos (I'm shooting from the doorway on both), there's no avoiding me installing it within a foot or so of the A/C vent. (to both be centrally located in the big bathroom, and in the small bathroom, to drop it in place of the existing one) I was initially worried about the exhaust fan sucking out A/C air (I do have those A/C vent louvers closed, though some still leaks out). But someone here told me the bath fan probably wouldn't suck out much A/C at all, since cold air fails and the humid hot air (that you want to remove) will rise to where the exhaust fan can get to it. So if that's the case, I should not worry about it being so close? However, the bath fan is supposed to move a lot of CFM so it could matter? Some suggest using plastic or cardboard to block off the A/C vents, so I could do that. (my 40 yr old Trane's air pressure is pathetic anyways) The other obvious option to me is installing it directly above the shower. I don't know how smart that is, nor if it violates any National or Arizona electrical or HVAC code in any way. I'm sure it would be great for directly sucking out shower mist, but probably not ideal for sucking out toilet odors, especially with the shower curtain drawn as most people prefer to keep it?
The bathroom with the diffuser vent is tiny. So small you have to close the door to sit on the toilet. I estimate the other bathroom is maybe 10 feet from doorway to outside wall and maybe 6' at most from side to side walls. If it's critical I'll measure it, let me know. Also the drilled hole next to the A/C vent marks where the attic exhaust roof jack was installed, and the toilet is to the left of the vent (below the towels) in the larger bathroom. In the tiny bathroom it's between the potted plant and the shower. If I put it above the shower in either bathroom, the connector duct in the attic would need to be angled to reach the roof jack a few feet away.
Any advice from either electricians (on the code) or HVAC guys (on the location)? I wasn't sure if I was allowed to post to both forums, but maybe I can post in Electrical asking if they can read this post in HVAC?
few feet away.
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