Shower-drying portable fan?

In reply to ProDarwin :

Yep. I agree. It was definitely a long shot, but worth mentioning. 
 

There are still areas of the country where no AC is "normal". 
 

(Not where you and I live)

Rain-X?  If the water does not build up it won't mold.

SV reX said:

It's very possible you need a dehumidifier, not a fan. 

I was wondering that too. This forum is great/horrible for my Squirrel! brain.

-First i went the route of a little ceiling mounted loop of an inlet duct near the exhaust fan, a short section of tube with a booster fan, exiting back into the shower at the far end blowing down towards the floor-all wired in with the exhaust fan and able to be controlled with a simple timer switch.

-Next I thought of a clip on fan for that towel rack and searched amazon for those.

-Then I looked at wet environment ceiling fans.

-Next I chased tiny semi classy looking countertop dehumidifier prices on Amazon.

-Then I looked into humidistats and posted. 

This is how I handle projects, school, etc. I often buy exploratory parts along the way and change my mind before I use them. I'm trying ADD meds. Now I feel like I still have ADD-I'm just faster. 

Where is the mold appearing?

..also try holding a Kleenex in front of the exhaust fan. Find out if it's pulling at all. 

ProDarwin said:

Where is the mold forming?  on the shower floor?

 

Are your sure that ceiling fan is installed properly/not clogged?  I'd get up in the attic / on the outside of the house and check the airflow first.  I dealt with a fan like that before in a rental property - the circular duct running to the soffit wasn't connected properly and was restricting flow.

Interestingly I almost never use the fan at all in my house and have no issues.

My son's new house had water dripping down the windows of his entire house during the first cold ND winter. His microwave/exhaust fan did not have an outside vent, just recirculate (we fixed that but that wasn't the only problem). We went outside and discovered that his two bathroom exhaust fans where missing the wall outlet flappers and where plugged shut with plastic caps. The builder came over, installed the flappers and he has had no more problems.

We use a 10" quiet fan sitting on our bathroom vanity and always leave the bathroom door open (when not in use) along with a high flow LOUD fan just because we are courteous of others.  

Mold needs two things to grow, moisture and a food source. I'm pretty sure it doesn't eat soap scum, and I'm not sure about hard water mineral deposits, but we have to every now and then spray the caulking around our tube/shower with Clorox spray cleaner with bleach to knock it down. I agree with the grout sealer idea. You might need an industrial floor drying fan unless your willing to wipe down the shower with a towel which I never would. Maybe you need a shower head attachment with a sprayer and rinse the shower down after every use to wash away all of the body dander you always shed.

Clever little canoe 

Old thread, but I'll share our solution to this problem. 

We use this WooZoo fan from Costco. It has a timer on it, it oscillates up and down as well as side to side. After we get out of the shower, we turn it on, press the button for 1 hour, and stick it in the shower. Mold and mildew problems are gone.