HVAC For Small Spaces - HVAC - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC


Thread Tools Display Modes
Old 02-10-2010, 01:32 PM   #1
Join Date: Dec 2008
Location: Washington, DC
Posts: 355
Rewards Points: 250

HVAC for small spaces

We are in the planning stages of a small addition to our home that will add 50 sq. ft to each of our three floors and I am trying to figure out the HVAC needs. The house has an oversized forced air heat/ac system, so picking up the additional square footage.

On one floor the space will serve as a foyer/mudroom and will connect without a door to a conditioned living room. On the next floor, the addition will be subdivided into a mudroom and a very small powder room, just 16 sq. ft. The mudroom and the powder room will of course be divided by a door, but the mudroom will connect to the conditioned kitchen without a door. On the third level, the addition will function as an annex to a conditioned bedroom without a door.

On all three levels, the adjoining conditioned space has sufficient supply air to service the addition. By adding supply vents to the addition spaces, is there any risk of over conditioning the space, making is hotter or cooler than is desirable? I am especially concerned with the 16 sq. ft. powder room, where it seems even a 3" duct would overwhelm it.



stubits is offline   Reply With Quote
Old 02-10-2010, 02:26 PM   #2
An old Tradesmen
Join Date: Oct 2008
Location: Somewhere
Posts: 34,589
Rewards Points: 8,164

Just install dampers in the supplies to those new rooms. Balance as needed.


beenthere is online now   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
History of HVAC Industry Brands winkydink HVAC 8 03-25-2011 07:28 AM
HVAC plans for remodel wease HVAC 3 03-23-2011 10:47 AM
Engineered Joists & holes for HVAC ducts walt1122 Building & Construction 3 07-04-2009 07:37 PM
HVAC Upgrade Questions JonC HVAC 8 02-27-2009 05:04 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1