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-   -   help with dryer. vent size problem? (http://www.diychatroom.com/f47/help-dryer-vent-size-problem-73356/)

semidevil 06-10-2010 03:26 PM

help with dryer. vent size problem?
 
so I ordered a washer/dryer to put in my apt from best buy.

they came to try to install and they told me that the dryer uses a 4 inch vent hose, and my vent opening is only 3.5 inches, so it does not fit. they told me to buy an adaptor. In the mean time, they put the vent hose through my wall and put a lint trap.

I went to a model home in my apartment with a 4 inch vent hose, and it seems to fit fine on a 3.5 vent hole on my all. Am I missing something?

I also went ahead and bought an adaptor, but I dont even know if I got the correct one. I bought a 4inch by 3 inch reducer. To me, it seems like it fits better witout the adaptor. Am I missing something?

no matter what, they are coming over this weekend and I want to make sure to get this fixed.

Is the adaptor I bought the correct one? Am I missing somethng here?

oh'mike 06-10-2010 04:42 PM

I never hear of 3 1/2 inch vent pipe----Measure it your self--I don't like the idea of restricting in vent down to 3 inch.--Mike--

Gary in WA 06-10-2010 08:32 PM

4" is the minimum safety code size all across the country...........

Be safe, Gary

Jim F 06-10-2010 09:38 PM

Quote:

Originally Posted by semidevil (Post 454127)
they came to try to install and they told me that the dryer uses a 4 inch vent hose, and my vent opening is only 3.5 inches, so it does not fit. they told me to buy an adaptor. In the mean time, they put the vent hose through my wall and put a lint trap. Am I missing somethng here?

Where is Rusty when you need him. He fixes 97 dollar installations.:laughing:

Yoyizit 06-10-2010 09:55 PM

Reducers, elbows, tees, etc., have an equivalent duct length [of 4" duct or 3" duct] but I cannot find the reducer value anywhere on the Web.

From Nutone:
"
Determine the equivalent duct length for each 90 degree
elbow by adding one foot of duct length for each inch of
duct diameter, i.e., a 4 inch diameter duct elbow equals
4 feet equivalent duct length and an 8 inch diameter
duct elbow equals 8 feet equivalent duct length.
"

Gary in WA 06-11-2010 09:12 PM

"they came to try to install and they told me that the dryer uses a 4 inch " ----------The dryer requires 4", DO NOT REDUCE IT. Buy anew Type "A" termination hood with wall ducting: http://www.appliance411.com/faq/dryer-vent-length.shtml

Be safe, Gary

Yoyizit 06-11-2010 09:28 PM

From the link, 0.6" of water column is easily checked using a piece of clear tubing.

Maybe reducers become lint traps, rather than raising the back pressure so much.

walldoo99 09-06-2013 01:38 PM

3.5" duct pipe
 
You probably have a brick facade on your house reducing the space in the wall and need an adapter. The other option is clamp it down and tear the house then wrap with duct tape. I don't know why they don't just make it with a 4" opening on the end. You might try a mobile home supply place if you don't find the adapter

md2lgyk 09-06-2013 03:00 PM

This is an apartment, right? Go to the management and explain that your dryer vent is illegal and poses a fire hazard to you and every other tenant. I'd bet yours isn't the only apartment with this problem.

beenthere 09-06-2013 03:10 PM

This is a 3 YEAR old thread.


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