Does A Powder Room Need An Exhaust Fan

Most cases a toilet exhaust fan.

Does a powder room need an exhaust fan. An in line fan will work to ventillate exhaust but you will require make up air that cannot be via the hvac so you ll need louvered door an undercut door transom or similar source for your make up air. Despite this archaic loophole and the time honored tradition of relying on a bathroom window which let s face it typically stays closed 90 of the time for ventilation and though you may technically be up to code with those three square feet of glass and screen it s just not enough. Hvac do you really need a fan in a 1 2 bath i disconnected it simply unplugs the fan in our powder room because it s on the same switch with the light and the noise was really annoying. Yes a 50 cfm exhaust fan is required and an 80 cfm is required if there is a tub or shower.

Wait a minute does my bathroom need a fan. Is there a window in this powder room. 5 points 10 months ago. They dont call it a fart fan for nothing.

See icc table r1507 4 note. Bathrooms require exhaust venting fans in some communities this section may be in lieu of section r303 3 or in addition to it. While powder rooms can benefit from exhaust fans they can usually operate just as well with a window that opens. You mention a shower but say i assume the powder room has a toilet.

A vent fan is not required per irc code provided the window meets a certain size 3 sq ft i believe. Also wondering how mold got up in the ceiling. 5 points 10 months ago. You don t need an exhaust fan if there s no shower or tub it s just a powder room.

You must eliminate the wiring as you indicated as well. An operable window you will need mechanical ventillation. Yes humidity created by the shower can cause mold. Exhaust duct to terminate a minimum of 3 from any window.

This exhaust fan should not be needed and can therefore probably be eliminated entirely.