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  1. #1
    Join Date
    Dec 2011
    Location
    somewhere between here and there
    Posts
    478

    Hot air coming from Return Air Ducting?

    So i got a phone call from a buddy today....A friend of a friend asked me to do a retrofit(on the side)

    I dont mind making a shwack load of cash in a short period of time. As dont have any overhead, a couple side jobs per year is a nice little cup of gravy.

    But at the present time/situation, I told the guy I was not available.

    Personal reasons made me turn the offer down.

    So the homeowner gets Company B to do the work. a legit hvac company.

    Maybe not legit employees, but a licensed company.

    Now I get a phone call from this guy and he says....now my filter is on the bottom(used to be on top).....and i have hot air coming fron the return vents?


    OMFG.....Really?

    I understand that we are all at dif levels of skill......has anyone ever seen this or heard of such a dumbass mistake?

    Obviously he had a counterflow and they installed as upflow!!!!!!!


    Please, Please Please......keep the Factory Smoke in the Wires!!!!!


    Is it Rum'Oclock yet???

  2. #2
    Join Date
    May 2011
    Location
    Oklahoma
    Posts
    362
    Still works though right? Supply is in a central section of the house and each room gets a return. You still get so many changes per hour...

  3. #3
    Join Date
    Dec 2011
    Location
    missouri
    Posts
    173
    I have never seen it done before, but have found quite a few evap. Coils sitting on top of counterflows over the years. Destroys a heat exchanger pretty quickly.

  4. #4
    Join Date
    Feb 2012
    Location
    Pacific Northwest
    Posts
    96
    LOL!!!

    You ask what kind of ding dong would do this? Well, I am one of those ding dongs.

    I installed an air handler the wrong way once. I was just on "auto pilot" and forgot that it was a downflow situation and just plopped the box in the way the writing on the front was.

    Still heated the house, just some rooms where warmer than others...

  5. #5
    Join Date
    Dec 2011
    Location
    somewhere between here and there
    Posts
    478
    LOL u went back and corrected the situation tho...right?


    Please, Please Please......keep the Factory Smoke in the Wires!!!!!


    Is it Rum'Oclock yet???

  6. #6
    Join Date
    Jun 2011
    Location
    Seattle WA
    Posts
    1,225
    The last lead I fired installed an air handler upside down. Then proceeded to argue with me saying the directions told him to do it that way. I had to go out on a Sunday and fix it, he didn't even offer to come out with me to do the job, a helper did and got a raise while he got fired. Had he been apologetic and helpful he'd still be employed.
    America; first we fight for our freedom,
    then we make laws to take it away.

    -Alfred E Newman

  7. #7
    Join Date
    Feb 2011
    Location
    Eustis, FL
    Posts
    2
    Can't say it was quite that bad, but not too long back I got the return and supply crossed on a residential package unit. Pretty easy to correct but somewhat embarrassing when the homeowners filter shot up out of their return.

  8. #8
    Join Date
    Jul 2010
    Location
    Eastern Kentucky
    Posts
    55
    That's the beauty of this field. anything could go wrong lol Not funny at the time though. I've put in a reversing valve in backwards one time. Well, instead of removing the reversing valve and redoing it I put a normally closed set of contacts on one of the wires going to the solenoid lol. And I have had a lot of people ask why didn't I just switch the wire around from O to the B on the thermostat. Well thats fine and dandy until the unit attempts to go into defrost. The board will still call for O. Well on most equipment that is.

  9. #9
    Join Date
    Feb 2012
    Location
    Pacific Northwest
    Posts
    96
    Quote Originally Posted by BigBacardi View Post
    LOL u went back and corrected the situation tho...right?


    Well, yeah. Only after the homeowner brought it up to my attention. It went a little like this: "hey there, you know that new heat pump you installed for us last week? It's working great and all, but it seems like some rooms are much warmer than others. Is there supposed to be air coming out of that big register in the hallway?" And then I was like: "ummm, I am gonna need to come over and check on that"...

    That's when I went, DOH!!! It was easy to fix, since the sheetmetal transition I made worked when the unit is flipped around, and there was enough slack in the electrical and lineset that it only took me a few hours to fix. After that I learned to slow down a little, and pay a little more attention.

  10. #10
    Join Date
    Dec 2004
    Location
    Chicago area
    Posts
    1,439
    I have intentionally done this more then once in split level applications. I outline the game plan in advance and it allways includes alot of retrofit sheetmetal. In every application the system performace increased in spades. The originally were usually upflows that I convert to down flows b/c the majority of air was being forced to make a 180 turn to head into the slab floor in the original arrangement. So to save on all the duct loss, I just re-design it for less utilizing a downflow. But, the registers never saw a change in flow direction.

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