Connect HVAC drain line to sewer drain?

Discussion in 'General Plumbing Help' started by Mike Peck, Jul 25, 2019.

Help Support Plumbing Forums by donating:

  1. Jul 25, 2019 #1

    Mike Peck

    Mike Peck

    Mike Peck

    New Member

    Joined:
    Jul 25, 2019
    Messages:
    1
    Likes Received:
    0
    Location:
    Springfield, MO
    My drain pipe off of the HVAC system runs through my crawlspace and drains out into my back yard. I would like to eliminate the water mess in creates, so thinking of going down into crawlspace and cutting the drain pipe from the HVAC and connecting to another drain pipe in the crawlspace like maybe the drain from my kitchen sink, or bathroom sink, etc. Are there any code violations if I do that? If not, are the bathroom or kitchen sink drain pipes good choices to tap into for the HVAC drain? Mike
     
  2. Jul 25, 2019 #2

    MASTRPLUMB

    MASTRPLUMB

    MASTRPLUMB

    Professional Professional

    Joined:
    Jan 27, 2018
    Messages:
    15
    Likes Received:
    13
    Location:
    ,
    LET ME COUNT THE WAYS THAT WOULD VIOLATE CODES,
    WHAT YOU NEED TO IS DIG A FRENCH DRAIN FOR YOUR HVAC TO EMPTY INTO,
    THIS WATER IS THE EXCESS MOISTURE BEING PULLED OUT OF YOUR HOUSE BY YOUR A/C
     
    breplum and Zanne like this.
  3. Jul 25, 2019 #3

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    9,332
    Likes Received:
    1,317
    Location:
    Southern California,
    My A/C guy, when he placed my A/C unit into the attic, placed the condensate line into a gravity fed vent line, basically making a wet vent. He also has a secondary catch pan with a 120v water intrusion alarm, and a third back up as a condensate line protruding over an exterior window, and it passed code in my area. 20151111_090347_resized.jpg
     
    Zanne likes this.
  4. Jul 25, 2019 #4

    CT18

    CT18

    CT18

    Junior Member

    Joined:
    Apr 30, 2014
    Messages:
    513
    Likes Received:
    127
    Location:
    Bloomfield Hills, Michigan
    Your sewer has sewer gas which are bad, you do not want to connect your furnace to that.
     
    Zanne and MASTRPLUMB like this.
  5. Jul 25, 2019 #5

    havasu

    havasu

    havasu

    Administrator Staff Member Admin

    Joined:
    Jan 6, 2010
    Messages:
    9,332
    Likes Received:
    1,317
    Location:
    Southern California,
    I understand but what I was told it essentially confirms that the p trap will always be functioning to stop the gasses.
     
    Zanne and MASTRPLUMB like this.
  6. Jul 25, 2019 #6

    Matt30

    Matt30

    Matt30

    Professional Professional

    Joined:
    Jan 17, 2012
    Messages:
    2,123
    Likes Received:
    818
    Location:
    Halifax, Nova Scotia
    If you can get it to a floor drain, or another trap you can indirectly connect it by an air break
     
  7. Jul 26, 2019 #7

    voletl

    voletl

    voletl

    Well-Known Member

    Joined:
    Dec 18, 2014
    Messages:
    678
    Likes Received:
    211
    Location:
    New York
    I never liked the pipe AC drains into the plumbing system to be honest I always thought it was hack work. I always pipe them outside where you can physically see it draining or I would drill into the gutter and have it drain into that
     
    breplum and MASTRPLUMB like this.
  8. Jul 26, 2019 #8

    FishScreener

    FishScreener

    FishScreener

    Well-Known Member

    Joined:
    Aug 23, 2018
    Messages:
    282
    Likes Received:
    82
    Location:
    83467
    My dad collected the condensate in fifty gallon drums, and used it to feed drip emitters for the flower beds.

    The amount of water the two a/c units produced in Vegas, at 14% or less relative humidity, was really surprising.

    Local codes may restrict whether you can connect the condensate line to the sewer system. Depending on the situation at the treatment plant, they may or may not want the extra water. If it is in the sewer system it has to be treated, and that typically costs money.
     
    Rossando likes this.
  9. Sep 9, 2019 #9

    adanew

    adanew

    adanew

    New Member

    Joined:
    Sep 9, 2019
    Messages:
    2
    Likes Received:
    0
    Location:
    London
    One of the key elements of corporate time management is the standard for calendars and time planning. A unified system of time planning provides a significant increase in manageability for managers and the convenience of employees. What good programs with time tracking do you know? I found this program https://www.managemart.com/hvac and besides the scheduling, it has other cool functions, what do you think about this?
     
    Last edited: Sep 12, 2019 at 3:01 PM
  10. Sep 10, 2019 at 2:26 AM #10

    FishScreener

    FishScreener

    FishScreener

    Well-Known Member

    Joined:
    Aug 23, 2018
    Messages:
    282
    Likes Received:
    82
    Location:
    83467
    I have the impression you are a robot spammer. New to the forum, posting in existing threads, with no relationship to the posts before yours.
     
    Diehard likes this.
  11. Sep 10, 2019 at 6:11 AM #11

    Rossando

    Rossando

    Rossando

    Well-Known Member

    Joined:
    Jul 2, 2018
    Messages:
    73
    Likes Received:
    8
    Location:
    San Francisco
    Pipe in a neutralizer and that should make it fine to go down any drain.
     
  12. Sep 11, 2019 at 6:31 PM #12

    frodo

    frodo

    frodo

    Just call me Macgyver Professional Supporting Member

    Joined:
    Sep 28, 2014
    Messages:
    7,496
    Likes Received:
    2,347
    Location:
    ,
    cut a tee into a vent pipe
    install a tee and p trap
    run the ac drain to the trap
     
  13. Sep 12, 2019 at 2:53 AM #13

    Rickyman

    Rickyman

    Rickyman

    Well-Known Member

    Joined:
    Feb 5, 2018
    Messages:
    129
    Likes Received:
    49
    Location:
    ,
    What happens in the winter time when a/c isn’t running and the trap dries out? Sewer gas gets pulled into the airstream whenever the heat is on.

    You need to pipe it into a wye branch tailpiece under a sink or outside into a dry well.
     
  14. Sep 12, 2019 at 6:10 AM #14

    breplum

    breplum

    breplum

    Professional Professional

    Joined:
    Nov 14, 2017
    Messages:
    229
    Likes Received:
    86
    Location:
    Lafayette, CA
    It is all in the plumbing code.
    Ir is NOT code or safe to run condensate into a vent line "havasu". FAIL
    It is called "indirect waste" IF YOU WANT TO USE INDOOR SANITARY PLUMBING do it to code.
    There is a lot to know and too long to illucidate on Chapter 8 of the UPC/CPC at this hour for me.
    Bottom lines:
    IGNORE Rossando's incorrect comment without first having a proper indirect waste set-up.
    Better: DO as voletl described and pipe to outside
    A building code official that allows condensate to run into a vent line directly is incompetent, ignorant and lacks knowledge.
    So passing an inspection, unfortunately in that case is bogus crap and not legitimate.
    As to the Original post: Dig a 12 x 12 pit, line with filter cloth, fill with gravel/drain rock and run a piece of pipe up out of the gravel and cover with the drain cloth then dirt on top.
    If your soil cannot percolate using that amount of volume, use a larger drain pit size.
     
    Diehard likes this.

Share This Page