Results 1 to 5 of 5

Thread: What to do?

  1. #1
    Join Date
    Dec 2004
    Location
    newton,mass.
    Posts
    6,109

    What to do?

    OK, just got asked this ... they have a hallmark HBD85 oil furnace with an "A" coil of unknown size and want to add a/c. From what i'm told the house is under eight hundred sq. feet. My first thought is the furnace is to big, and it is new, as is the coil, this adds to the problem. So, what advice would you give them as far as adding a/c. I would like to tell them to start over. The furnace is going to run for a very short time when heating and move to much air when cooling. So, what would you guys do?

    PS
    I am not doing this job.
    .
    "Nothing else can poison our culture, corrupt our society or ruin the character of our people like unearned money or unearned opportunity." -- James R. Cook

    "Fooling around with alternating current is just a waste of time. Nobody will use it, ever." Thomas Edison, 1889.

  2. #2
    Join Date
    Jan 2004
    Location
    Here and there
    Posts
    4,808
    Silly Charlie. A load calculation and sell new and fix duct as needed
    i belong to peta ... people eating tasty animals. all my opinions are just mine.

  3. #3
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    18,218
    Why not sell them a condenser and new evap. and just adjust the fan speed for the proper CFM?
    To put the world in order, we must first put the nation in order; to put the nation in order, we must put the family in order; to put the family in order, we must cultivate our personal life; and to cultivate our personal life, we must first set our hearts right.
    -- Confucius

  4. #4
    Join Date
    Sep 2002
    Location
    Northeast Ohio
    Posts
    4,855
    As far as oil furnaces go, no huge. Highboy 85 out with a 3 ton max drive. 4 sp blower properly set up with decent duct system and you should be able to make a good install out of it. Everybody loves a challenge
    A good HVAC tech knows how, an educated HVAC tech knows why!

    DEM


  5. #5
    Join Date
    Dec 2004
    Location
    newton,mass.
    Posts
    6,109
    Quote Originally Posted by coolwhip View Post
    Why not sell them a condenser and new evap. and just adjust the fan speed for the proper CFM?

    The guy who asked me is there now looking at it and getting more info. I went on line and looked at the furnace spec's, it has a three speed motor that even on low may be well over the cfm needed. Also, the size coil that's in there is unknown ... as of this moment. I think the duct work is original and I would think there is not much of it. Strangely enough I found out that this house is two blocks from where I live ... I wonder if they signed the petition to have me thrown out of town ...


    .
    "Nothing else can poison our culture, corrupt our society or ruin the character of our people like unearned money or unearned opportunity." -- James R. Cook

    "Fooling around with alternating current is just a waste of time. Nobody will use it, ever." Thomas Edison, 1889.

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