Measuring Supply And Return FPM - HVAC - DIY Chatroom Home Improvement Forum


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

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 04-21-2012, 07:37 PM   #1
Member
 
Join Date: Jan 2008
Location: N.C.
Posts: 418
Rewards Points: 250
Default

Measuring Supply and Return FPM


I've completed my crawlspace HVAC upgrade from R4.2 flex to R8 pipe with dampers. Attic is next.

What is the best way to measure air flow FPM? I have a handheld anemometer. Is the best method to remove the deflector grills and place the unit flush with the opening and centered. I have noticed that the air flow measures higher or lower in different locations.

Advertisement

Earnie is offline   Reply With Quote
Old 04-21-2012, 09:13 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,417
Rewards Points: 4,484
Default

Measuring Supply and Return FPM


Quote:
Originally Posted by Earnie View Post
I've completed my crawlspace HVAC upgrade from R4.2 flex to R8 pipe with dampers. Attic is next.

What is the best way to measure air flow FPM? I have a handheld anemometer. Is the best method to remove the deflector grills and place the unit flush with the opening and centered. I have noticed that the air flow measures higher or lower in different locations.
Are you tying to determine CFM from through the supplies and returns. if so, then the covers must be on, and an average reading across the face is used.

Advertisement

beenthere is online now   Reply With Quote
Reply


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
Measuring supply & Return flows lakeresident HVAC 4 11-21-2011 07:12 PM
Closing off HVAC return and supply vents Kulingar HVAC 6 11-15-2011 10:22 AM
Distance between HVAC supply and return vents atlantatd HVAC 4 04-13-2011 09:30 PM
Cold Air Return next to supply duct thebigbbm HVAC 6 09-21-2010 06:51 PM
Supply and Return Issue billybob45 HVAC 4 07-31-2008 10:44 PM




Top of Page | View New Posts