DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   HVAC (http://www.diychatroom.com/f17/)
-   -   question on return duct (http://www.diychatroom.com/f17/question-return-duct-36640/)

familyman 01-23-2009 01:11 PM

question on return duct
 
I am trying to figure out if I can reduce the size of my return duct in my kitchen.

My kitchen has a studded in return next to the refrigerator. The return is about 25x17 inches. The return is just a drywalled opening not a metal duct. Down in the basement the return is reduced to a 20x10 metal duct that attaches to my heat pump. I have been told by someone who works in HVAC that I can reduce the return in my kitchen to the size of the return that it reduces to in the basement (20x10). I am thinking that they made the return that large to make the space for the refrigerator. I would love to just run a 20x10 duct up because we are renovating the kitchen and are planning on moving the refigerator and need the extra space. Is this possible?

thanks

hvaclover 01-23-2009 01:22 PM

Don't know who told you that but it is against code to put cold air returns in the kitchen/

JohnH1 01-23-2009 01:53 PM

Try the bath room you wont mind recurculating air from there eather. :laughing:

dac122 01-23-2009 01:57 PM

Yup, kitchens and baths are no-no's for returns. Among many reasons you don't want those odors wafting around the house. It is time to move that return somewhere else as part of your remodel.

familyman 01-23-2009 02:40 PM

I am sorry I was not clear, the return runs up the wall of the kitchen, the grill is in the living room. I am trying to find out if I can reduce the size of the retun to the size of the duct for the return in the basement.

beenthere 01-23-2009 04:54 PM

NO!

The hole in the floor is already restricting air flow.
Using a smaller opening in the wall will restrict it more yet. And shorten the life of your furnace.

hvaclover 01-23-2009 08:26 PM

Quote:

Originally Posted by familyman (Post 217942)
I am sorry I was not clear, the return runs up the wall of the kitchen, the grill is in the living room. I am trying to find out if I can reduce the size of the retun to the size of the duct for the return in the basement.


I won't even WRITE what I am thinking.....jeeze

familyman 01-24-2009 01:23 PM

ok thanks, so just to make sure I am clear on it, attached is a diagram of the duct work. Do I have any other options on making the drywall return smaller? What is the reason the drywall return would be larger then the metal return?

[IMG]http://i306.photobucket.com/albums/n...ACreturn-1.jpg[/IMG]

beenthere 01-24-2009 02:43 PM

Subtract the plate dimensions at the floor, and what size is the opening then.

familyman 01-24-2009 03:21 PM

Quote:

Originally Posted by beenthere (Post 218405)
Subtract the plate dimensions at the floor, and what size is the opening then.

What do you mean by the plate dimension at the floor? The opening in the floor looks like it is 20x10. I measured the internal measurement of the drywalled return at the top and it is 25.25 by 18.5 inches. The grill is 19 by 19. What other options would I have if I need to keep the drywalled return the same size. Could I change the shape of it? Thanks for all your help.

beenthere 01-24-2009 05:35 PM

The chaise has to have a frame.
Most likely made from either 2x4s or 2x3s.

When you frame around the hole, the drywall dimension becomes bigger then the hole.

So if they framed out the hole by keeping the frame on the outer edge of the hole, then that is the smalllest it can be.

Dr Heat 01-24-2009 10:39 PM

Quote:

Originally Posted by hvaclover (Post 217917)
Don't know who told you that but it is against code to put cold air returns in the kitchen/

Can you sight the code? :whistling2:
Just messin with ya drac

Dr Heat 01-24-2009 10:46 PM

Quote:

Originally Posted by familyman (Post 217942)
I am sorry I was not clear, the return runs up the wall of the kitchen, the grill is in the living room. I am trying to find out if I can reduce the size of the retun to the size of the duct for the return in the basement.

Just a little more info:
The grill on your return has in the area of 50% free area meaning when you figure in the louvers and center bar and the frame your actual air opening is around 1/2 the rough opening. This is a guess to a certain extent because I do not know the specs on your ra grill but many residential grills are 50% free area.

JohnH1 01-25-2009 11:05 AM

If you need to make the return smaller could you add another return to another location. Say add a floor return to a livingroom or dinning room area That is not in the walking path.


All times are GMT -5. The time now is 08:45 AM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved