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  1. #14
    Join Date
    Jan 2008
    Posts
    13
    Hi thanks, looked at both on the fan side and the duct side. Held a flashight in the a coil and could see the light from the other side. Didn't have much access to check every square inch though. Model number of furnace: Carrier Weathermaker 58SXC060 Series 100 installed in 1992. FYI put a temp probe in my vents in my office at home 66 degrees in the cold air return and 82 coming out the heat vent, but no velocity not getting the house over 67 degrees. Believe it was in the teens here last night.

  2. #15
    Join Date
    Aug 2007
    Location
    Atlanta, Ga
    Posts
    213
    Has the duct work come apart somewhere...no velocity in any supply?


    If the unit is in the attic, is the attic warm?

  3. #16
    Join Date
    Jan 2008
    Posts
    13
    Hi, unit is in the basement, can see the duct work all ok, basement is cold also, normally warmer there when furnace worked. Thanks.

  4. #17
    Join Date
    Jul 2001
    Location
    VA
    Posts
    2,801
    You need to call somebody.
    ___________________________________________


  5. #18
    Join Date
    Jan 2008
    Posts
    13
    Thanks, he's coming out tomorraw afternoon Will update as soon as.

  6. #19
    Join Date
    Jul 2001
    Location
    VA
    Posts
    2,801
    Good, the air is doing one of two things... going somewhere it shouldn't, or not moving at all.... If it isnt moving at all, where is the heat all going? This is why I say it needs a first hand look.
    ___________________________________________


  7. #20
    Join Date
    Jan 2008
    Posts
    13
    Hate to be the boy calling wolf, but guess my "no velocity" isn't the HVAC version of 'No Velocity." Tech brought a meter with a fan on the end of the stick (sorry for the technical terms) and tested the heat vents and said that he read 200 CFM(?) + and that, I believe, 150 is minimum expected, so velocity is fine. He then tested the temp with a meter and sensor at the cold air inlet above the furnace at 67 degrees, and on the hot air side at 82 degrees. He said my problem is lack of insulation in the walls and ceiling and that the air is too cold going into the furnace. Blower is running on low of three speeds. So I guess I'm back where I started. 34 degrees outside and can't get house over 68 degrees. Again in my first explanantion we didn't have this trouble over the last three winters. So I'm at a loss. Furnace keeps running flame on. Guess I think that the heat rise should be higher then 15 degrees. Any insight on that? Thanks for all responces.

  8. #21
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    A furnace with only 15 degrees rise??

  9. #22
    Join Date
    Nov 2004
    Location
    North Carolina
    Posts
    443
    Call another tech, because the one you have appears to have a brain lock. A 15 degree heat rise from a fire??? Not normal.

  10. #23
    Join Date
    Jan 2006
    Location
    Powell River, BC, Canada
    Posts
    763
    Definitely get someone else to check it out, that guy is an idiot. 67* is NOT too cold of a return temp for the furnace! IIRC, the manual states it is good to 50* RA. Temp rise should be 30-60*, preferably in the middle-to-high side of that range. My first thought is low gas pressure, either supply or manifold. (Or both!) Make sure whoever comes out has experience with gas furnaces. The first guy obviously didn't have a clue!
    Where are you? Are you done yet? I got ONE more call for you.....

  11. #24
    Join Date
    Jul 2001
    Location
    VA
    Posts
    2,801
    Ohhhhh brother
    ___________________________________________


  12. #25
    Join Date
    Apr 2007
    Location
    Dallas TX
    Posts
    192
    we are all human. some motors have a direction direction lead set and the blower blows in the same direction regardless of motor direction.

  13. #26
    Join Date
    Apr 2007
    Location
    Dallas TX
    Posts
    192
    the side of the blower next to the service door should move down and the backside should move up.

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