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Technical Heat and Cool

Discussion in 'Traditional Hot Rods' started by Willywash, Oct 13, 2020.

  1. Willywash
    Joined: Sep 18, 2019
    Posts: 64

    Willywash
    Member

    Can anyone tell me the best fitting heat and cool evaporator that will fit behind dash on 31 Model A?
    I have the bottom of gas tank cut out. Looking at the Gen11 Mini , but still can't tell if I have room to run vent hoses off the top of unit. I have installed a few cheap units in trucks with good results, but I don't think there are any out there small enough for the A.
     
  2. BJR
    Joined: Mar 11, 2005
    Posts: 6,524

    BJR
    Member

    Look at Vintage Air, I just put one in my 49 Buick. They have a mock up unit that you can borrow, with a deposit, to see if it fits.
     
    olscrounger likes this.
  3. Almostdone
    Joined: Dec 19, 2019
    Posts: 315

    Almostdone
    Member

    I just installed the Vintage Air GenII Mini in my ‘31 Model A. It all fit with the gas tank removed, but there’s not much room left. I used a ‘32 dash and a 5-gauge cluster. Worked great, but tight. I installed everything with the cowl (old gas tank top) out and put it back in when everything was done behind the dash. I used their center vent and control unit for the ‘32 dash and added two of their cheapest vents near the outboard edges.

    I’m happy with it. 10BEE70C-99BC-4EF7-9D0C-439359AE76DA.jpeg

    EF90859B-0C4A-4381-9490-8423FAED09D5.jpeg BDA2914D-EAF4-4AE9-9329-151BFC5C20F0.jpeg
     
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  4. Willywash
    Joined: Sep 18, 2019
    Posts: 64

    Willywash
    Member

    Like the paint on your Buick! Thinking of a flat white on by A with gross black firewall and rims. Do you have the
    Gen 11 Mini? And does it do a good job cooling? I have a 14x 18 condenser mounted and Sanden 508 on SBC.
    Thanks for the pics! I have a 4 inch recess firewall....hop
     

  5. vintage air makes a unit for behind the seat. much better option than trying to cram it under the dash.
     
  6. seb fontana
    Joined: Sep 1, 2005
    Posts: 6,608

    seb fontana
    Member
    from ct

    I put one [vintage air] behind the seat in my Shoebox about 25 years ago, the ones they have now are probably more compact and made to go behind seats..
     

    Attached Files:

  7. Dirk35
    Joined: Mar 8, 2001
    Posts: 2,032

    Dirk35
    Member

    This is how I did the brackets to install the Vintage Air Mini in my 1928 Model A. I used a Aftermarket 32 style fiberglass dash. I don't have a pic with the A/C installed. 1928 Model A Dash 1.JPG 1928 Model A Dash 2.JPG 1928 Model A Dash 3.JPG 1928 Model A Dash 4.JPG
     
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  8. Almostdone
    Joined: Dec 19, 2019
    Posts: 315

    Almostdone
    Member


    I flipped the original firewall, so gained about 4 inches of engine room. The AC still fit, but it’s tight in there!
     
  9. bubba55
    Joined: Feb 27, 2011
    Posts: 340

    bubba55
    Member

    What about using the mustang style heat / AC unit - small and compact - that's what I plan on using in my 30 coupe


    Sent from my iPhone using H.A.M.B.
     
  10. I used the Gen II heat/air unit in my 32 sedan last year and moved the unit over to the passanger side as to be able to use the cowl vent, I am more than pleased with how it turned out and how well it works.

    I also used the optional control panel that mounted to the bottom of the dash, I my cash I did not want to drill vent holes in the dash so we made some sheet metal panels and covered them with vinyl and that hid any unsightly hoses and fittings. HRP

    [​IMG]

    Nothing hanging down. HRP

    [​IMG]
     
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  11. Willywash
    Joined: Sep 18, 2019
    Posts: 64

    Willywash
    Member

  12. Hotrodprimer,
    Did you go with the mini unit or the compac ? I'm working on cleaning up my firewall before attempting to install the Gen II mini, so I can also keep the cowl vent usable.
     
  13. Gen II compac it does a great job of heating and cooling the sedan.

    I believe the mini ^ the compac are both the same size. HRP
     
    Last edited: Oct 16, 2020
    72yenkonova likes this.
  14. That's good to know!!, It says to install the largest unit possible, but at 20.5" long the compact evaporator would have been mighty tight. So I went with the mini & wasn't sure how effective it would cool the coupe during our Texas summers. I feel better now, with your help!!
     
  15. Gman0046
    Joined: Jul 24, 2005
    Posts: 6,253

    Gman0046
    Member

    A good rule ot thumb is buy the largest unit that will fit in the space available.
     
  16. Willywash
    Joined: Sep 18, 2019
    Posts: 64

    Willywash
    Member

    I found a 404 evaporator heat and cool on ebay. I have installed this under dash type in four or five in pickup projects. They have worked well. The problem with the behind dash 404 is that the vents are out the front and won't clear the dash in a Model A with a four inch recessed dash. So I think I can cut the vents off the front and put a plate over the front...that cuts the unit down to about 11 inches deep. I'm going to cut vent holes in front of top of unit. I have room to run hoses to vents on each side and middle. Did I say the 404 sells for 83.00, that's with controls. Hoping it works....but for the money...I'll roll the dice!
     
  17. There are 2 sizes of the compac. Look at Vintage airs website to see the differences. I believe it's around an inch in 2 directions.
     
  18. mgtstumpy
    Joined: Jul 20, 2006
    Posts: 8,218

    mgtstumpy
    Member

  19. Redrodguy
    Joined: Nov 18, 2016
    Posts: 94

    Redrodguy
    Member

    31 Model A coupe.
    Currently working on installing a Gen II ComPac heat, cool, defrost with center control like HRP used, plus under dash vents on each side. The trick to me was to make defrost vents that actually work. I'll try to get pics showing my solution.
     
    72yenkonova likes this.
  20. deansrr
    Joined: Jul 20, 2011
    Posts: 52

    deansrr
    ALLIANCE MEMBER

    I'm looking at the Heritage Series from Vintage Air, a little smaller. Can't decide if I want Heat or not! Suggestions
     
  21. Almostdone
    Joined: Dec 19, 2019
    Posts: 315

    Almostdone
    Member

    I haven’t charged my AC yet, but I’ve used the heat several times already. I suppose it depends on when and where you drive. It’s been in the 50s and 60s here lately.
     
    hotrodharry2 and 72yenkonova like this.
  22. Redrodguy
    Joined: Nov 18, 2016
    Posts: 94

    Redrodguy
    Member

  23. 32 hudson
    Joined: Mar 5, 2005
    Posts: 711

    32 hudson
    Member

    I realize Vintage Air is the most used A/C unit. But the Hurricane unit from OLD Air Products is a very compact unit for under dash. Has anybody had experience with Hurricane unit ? Price seems to be reasonable I think.
     
  24. Rick Coast
    Joined: Apr 19, 2020
    Posts: 35

    Rick Coast
    Member

    I bought a southern air a/c and heat unit . not impressed with it.should of spent more $ and got a vintage air, just saying.
     

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