Page 1 of 2 12 LastLast
Results 1 to 13 of 14

Thread: Venting

  1. #1
    Join Date
    Jun 2013
    Location
    Northeast Wi
    Posts
    158

    Venting

    Im going to replace my rheem modulating with a new Airease mod. Furnace this weekend. My current setup is single piped with 3"about 20' with a 2" termination through the wall. The venting is short so i can stick with 2" or should i do 3"? I guess my question is is larger better for a short run? Are there pro vs cons for short 3" runs? What would you do?

  2. #2
    Join Date
    Jul 2010
    Location
    nebraska
    Posts
    1,629
    Follow the installation instructions.

  3. #3
    Join Date
    Jun 2013
    Location
    Northeast Wi
    Posts
    158
    The install manual says i can use something like 100' give or take of 2" or 3". I will use 4 elbows total. Just wondering if one size is better than the other being that i have such a short run.

  4. #4
    Join Date
    Aug 2007
    Location
    Northern VA 38 degrees N by 76 degrees W
    Posts
    5,058
    Quote Originally Posted by 11crv View Post
    The install manual says i can use something like 100' give or take of 2" or 3". I will use 4 elbows total. Just wondering if one size is better than the other being that i have such a short run.
    Smallest for short run

  5. #5
    Join Date
    Jun 2011
    Location
    Seattle WA
    Posts
    1,225
    Who makes Airease?
    America; first we fight for our freedom,
    then we make laws to take it away.

    -Alfred E Newman

  6. #6
    Join Date
    Jun 2013
    Location
    Northeast Wi
    Posts
    158
    Lennox

  7. #7
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,699
    Pardon my bringing it up, but this shouts DIY to me even though it is posted in tech-to-tech. I would expect any technician to know what the OP is asking.

  8. #8
    Join Date
    Aug 2007
    Location
    Northern VA 38 degrees N by 76 degrees W
    Posts
    5,058
    Quote Originally Posted by kdean1 View Post
    Pardon my bringing it up, but this shouts DIY to me even though it is posted in tech-to-tech. I would expect any technician to know what the OP is asking.
    I would expect them to know also but not necessarily reality. Reading the instructions and following them is a huge issue with catagory 4 equipment.

  9. #9
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,100
    I found this one yesterday on an estimate to replace the existing furnace. I bet it was like this from day one. Then I am looking at it more, why did the tract guy put duct tape on the connection?

    Inventor/Manufacturer:
    KoppLift™ Hand Truck Lifting Bar
    http://www.amazon.com/shops/JohnGKoppLLC
    Video
    http://youtu.be/FsSViwAEz7A

  10. #10
    Join Date
    Jun 2013
    Location
    Northeast Wi
    Posts
    158
    All I wanted to know is if the furnace will benefit from one size or the other. There is only a 20' length difference between the 2" and 3". I am s tech and help the installers when we get swamped. From a performance stand point which is better or doesn't it matter. I'm just curious.

  11. #11
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,100
    Sorry I ment to post the photo on another thread. Your 2" should be fine. But as you say 3" is ok too. I would run 2" if book says it's ok.

  12. #12
    Join Date
    Jun 2011
    Location
    Seattle WA
    Posts
    1,225
    Quote Originally Posted by JKopp View Post
    I found this one yesterday on an estimate to replace the existing furnace. I bet it was like this from day one. Then I am looking at it more, why did the tract guy put duct tape on the connection?

    Looks like it was too short and had 1/2 of bite so duct tape was the hack. A mouse ran by and it came loose. That's criminal
    America; first we fight for our freedom,
    then we make laws to take it away.

    -Alfred E Newman

  13. #13
    Join Date
    Oct 2013
    Posts
    9
    20 ft + 4 ells =60ft, to me that's not a short run, 3" JMO......

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event