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Technical Under Dash Heaters

Discussion in 'Traditional Hot Rods' started by spillaneswillys, Nov 4, 2018.

  1. I am wanting to put an under dash heater in my 34 Dodge for driving on the decent winter days Speedway has a few different ones and j am just w/o daring if you guys have had any good or bad luck with these I expensive heaters. Not looking for a Vintage Air or anything like that.
  2. classiccarjack
    Joined: Jun 30, 2009
    Posts: 730


    Roberts Motor Parts sells a 12V heater that resembles a vintage heater....

    Sent from my Moto Z (2) using The H.A.M.B. mobile app
  3. chop job
    Joined: Feb 16, 2013
    Posts: 389

    chop job
    from Wisconsin

    Went to Roberts web site and no picture was available do you have a picture that you could share with us?
  4. classiccarjack
    Joined: Jun 30, 2009
    Posts: 730


    I don't, I called them a few months back and they told me that it resembles the old square under dash heaters. Perhaps you can call them on Monday. They seem to be really good at describing their products.

    Sent from my Moto Z (2) using The H.A.M.B. mobile app
    chop job likes this.
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  5. 49ratfink
    Joined: Feb 8, 2004
    Posts: 16,810

    from California

    I bet Speedway doesn't have any heaters like these...

    IMG_5229 $39.99.JPG IMG_5238 $49.99.JPG IMG_5249 $45.00.JPG IMG_6151 $65.00.JPG
    patmanta, lowroller1, fauj and 6 others like this.
  6. There are a lot of vintage heaters out there,these old boxes can put out a lot of heat. HRP
    49ratfink and classiccarjack like this.
  7. In my roadster, I took one of those modern square box style auxiliary heaters (I think they were designed for use in the back of suburban type trucks in the '70-80's) that looked completely uninteresting (like it came out of the 70-80's) and made a couple simple changes to bring it into the era. I made a new front cover out of sheet metal...with rounded edges and corners, I added a trap door to the bottom of the new face (and used the original side vents that came on the heater), I painted the new front cover with rattle can hammertone grey, I added some art deco era type trim (made using 3 strips of stainless steel bars welded together with studs on the backside (I scavanged from old oven racks that I found at the dump)), and then added a reproduction trunk badge from a '40 ford trunk.

    The plus side of this heater was it was cheap, 12 volt, came with a new heater core and fan. Works great.
    20181104_093950_resized.jpg 20181104_093959_resized.jpg 20181104_094016_resized.jpg 20181104_094027_resized.jpg
    Gremlinguy, i.rant, MO_JUNK and 41 others like this.
  8. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,222

    sloppy jalopies

    got a old hadeez heater somewhere...
    my opinion is find one that uses an easy to find modern shape core, if you can't find a core try a power steering fluid cooler...
    maybe use spray expand-o-foam and some wax paper to make a mold to help anchor it... and a 12v computer fan or two, low voltage, quiet, and easy to find... $0.02...
    afgjr likes this.
  9. johndee138
    Joined: Jul 12, 2009
    Posts: 36

    from Atlanta GA

    I found some nice ones off epay but you gotta be persistent
    Usually have to clean them good and find a little 12v fan motor to make em blow but no big deal
    Here’s the one I put in my 36 coupe
    It’s a Hadees for 36 found in dilapidated shape with no fan motor on epay
    Rewired, replated the doors, polished the frame(it’s gonna get plated too)
    I’ve got a nice Montgomery Ward with a chrome plated case I should prolly sell
    Now pix of the MW heater
    IMG_0128.JPG IMG_0129.JPG

    Sent from my iPhone using H.A.M.B.
  10. 270ci
    Joined: May 17, 2010
    Posts: 333


    That looks terriffic!
    Could you show a pic of the heater you started with, or if it's too off topic, shoot me a pic in a PM?
  11. big duece
    Joined: Jul 28, 2008
    Posts: 4,930

    big duece
    from kansas

    My favorite is the Harrison. I have two of them set aside for both '32 projects. 32road_bright6.jpg
    akoutlaw, Tim, jim snow and 8 others like this.
  12. classiccarjack
    Joined: Jun 30, 2009
    Posts: 730


    I second this. Great job!!!

    Sent from my Moto Z (2) using The H.A.M.B. mobile app
  13. Thanks guys...I started with something that looked very similar to this:

    It may not have been this exact unit. The one I used was a swap meet score a number of years ago (it was unused and still in the original box). You get the idea though....and within context. 20181104_110917_resized.jpg
    Last edited: Nov 4, 2018
    Gremlinguy, akoutlaw, DLRIDES and 4 others like this.
  14. gatz
    Joined: Jun 2, 2011
    Posts: 1,283


  15. firstinsteele
    Joined: Jun 13, 2013
    Posts: 719


    Dang, that is neat! A factory one would not look as good.

    Last edited: Nov 4, 2018
    anothercarguy likes this.
  16. chop job
    Joined: Feb 16, 2013
    Posts: 389

    chop job
    from Wisconsin

    Very nice job. VERY cleaver.
    anothercarguy likes this.
  17. 41rodderz
    Joined: Sep 27, 2010
    Posts: 903

    from Oregon

    That's a sweet piece of work.:)
  18. 392
    Joined: Feb 27, 2007
    Posts: 733


    Nice job.
  19. Gman0046
    Joined: Jul 24, 2005
    Posts: 5,120


    Nothing looks better then a restored vintage heater. Wouldn't even think about an ugly looking repop.

  20. jazz1
    Joined: Apr 30, 2011
    Posts: 1,273


    I have my original in my '41 but after seeing some of these heaters no doubt there are folks who collect vintage heaters exclusively. That Harrison heater is very unique, never seen that model.
  21. RMONTY
    Joined: Jan 7, 2016
    Posts: 1,142


    I have an old one I found in the trunk of a parts car. I don't know if it leaks or not. Might try it some day but I really don't have any use for it as of now. It could probably be made to look decent. IMG_7004.JPG


    IMG_7006.JPG IMG_7008.JPG
    classiccarjack likes this.
  22. 270ci
    Joined: May 17, 2010
    Posts: 333


  23. wood remover
    Joined: Dec 23, 2012
    Posts: 636

    wood remover

    Love the vintage heaters , a few I have collected and hope to use someday 20181104_163313.jpg
    Vanness, brEad, jazz1 and 3 others like this.
  24. ronzmtrwrx
    Joined: Sep 9, 2008
    Posts: 371


    That is very cool. Well done.
  25. Mr48chev
    Joined: Dec 28, 2007
    Posts: 23,506


    A lot of those vintage heaters are cute but will cost far more to get working right than just buying a good heater. I full and understand the why and have several small under dash heaters in the shed but outside of one rig that having "correct" is a must I probably won't use any of them because of the expense to fix them.
  26. mrharley51
    Joined: Sep 16, 2007
    Posts: 120


    Traded an old Sun tach for this Hudson heater...put a new heater core in it from a Ford F150 100_8961.JPG and a 12v converter...
    I have used the box heaters from Yogi's and Speedway, Vintage air...they work fine but are a bit expensive...enjoyed scrounging an old one back to life for some time and 40 bucks...

    Attached Files:

    brEad, Hombre, blownhemi48 and 7 others like this.
  27. I have a couple of old heaters but they don't hold pressure. I might try and cover a new one with an the shell of a vintage heater but for this year just going to go new style. Any luck with the new ones or bad luck out there?
  28. Joe H
    Joined: Feb 10, 2008
    Posts: 651

    Joe H

    I had a Vintage air heater under the seat of my '37 for years. It made great heat, actually to much, there was no control on the water flow, so I hat full heat or no heat. The cab is really small so I didn't take much to stay warm. I always drove with the cowl vent open to regulate the heat. I also added a second resistor to slow the motor down even slower to make more manageable. I recently added a A/C unit with heat with a variable water valve. Best move I made, you can have warm but not hot air.
    Something to think about when designing your system. Maybe a cable operated heater valve?
    Tim and classiccarjack like this.
  29. mrharley51
    Joined: Sep 16, 2007
    Posts: 120


    I agree with you on the control valve...put one in line and use a choke cable to operate if you can't do it manually in the cab. I use a valve from ebay...old Dodge/Ford part about 7-12 bucks ..
  30. RMR&C
    Joined: Dec 26, 2009
    Posts: 2,765

    from NW Montana

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