Ayuh,... That's 24 sq. inches....
How much air ya gonna push through a 4" flex-vent tube,..??
bath exhaust
I have determined the CFM exhaust I need for my bath to be 80; however with almost all baths, privacy with a closed door reduces the amount of airflow into the bath. My 24" door has a 1" opening at the bottom for airflow. I don't know how much air CFM this allows into the bath nor what the consequences are for my bath motor if this is insufficient.
Should I be concerned with this restricted air flow into the bath?
Should I be concerned with this restricted air flow into the bath?
1 - 13 of 13 Posts
How much air ya gonna push through a 4" flex-vent tube,..??
spaces under doors are 5/8" up to over an inch average. as long as it is at least 5/8" off the floor the a/c-heat unit and bath fan will work just fine.
yea you will be ok. i will be more concerened with the length of the duct run
Do what? I don't believe that is any code I have seen.I think you must add a small decorated window (A very small one) to your door so that air can pass through it properly but make sure you don"t see on the other side from any position and like wise.
Never heard of it either. Nor have I ever seen a bathroom door with a window in it.Do what? I don't believe that is any code I have seen.
how did you determint the required cfm?
By the size of the room.how did you determint the required cfm?
how did you determint the required cfm?
One of many web sites for calculating the cfm...Suggested CFM for the bathroom is based on cycling all the air in the bathroom 8 times per hour. The bath fan calculator is standard guide to help you find the minimum fan rating for your specific bathroom. The higher the bath fan rating the more air can be vented out of the bathroom, which means less moisture and mold build-up.
http://www.ventingdirect.com/bath-exhaust-fan-calculator/c16459
One of many web sites for calculating the cfm...
http://www.ventingdirect.com/bath-exhaust-fan-calculator/c16459
Wow thank you very nice link, very helpful information.:thumbup:
bath exhust
Thanks to all for the info.
Thanks to all for the info.
Bookmarking that one.One of many web sites for calculating the cfm...
http://www.ventingdirect.com/bath-exhaust-fan-calculator/c16459
Nice link.
I'll stick with mine; flex duct, elbows, and roof/wall cap deductions; http://www.efi.org/factoids/bathroom_sizing.html
Lol.
Gary
PS. Termination hoods/fittings also create back pressure; from my dryer links; http://www.youtube.com/watch?v=cFOHGVhmyQA
Lol.
Gary
PS. Termination hoods/fittings also create back pressure; from my dryer links; http://www.youtube.com/watch?v=cFOHGVhmyQA
1 - 13 of 13 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
DIY Home Improvement Forum
A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Helping You to Do It Yourself!
Full Forum Listing
Explore Our Forums
Top Contributors this Month
View All
Nealtw
1040 Replies
chandler48
908 Replies
Fix'n it
487 Replies
Recommended Communities
