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Thread: Wag Aero vs Piper Heater box

  1. #1

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    Wag Aero vs Piper Heater box

    I see the Wag Aero heater box has 3 connections: an inlet for the warm air from the Heat Shroud, one outlet to the cabin and another outlet to dump the warm air away from the cabin when the cabin heater/vent is switched off.

    The Piper (PA-12) heater box has 4 "connections" an inlet for the warm air from the heat shroud, an inlet for cold air from a vent on the bottom of the lower cowl and an outlet to the cabin. Warm air is dumped away from the cabin when the heater is off, through a hole in the wall of the warm air inlet connection, which releases the warm air into the lower plenum area when the heater is off

    Questions:


    • Which box is recommended when either are choices?
    • Does anyone use the Piper heater box for fresh/unheated air?
    • How "warm" is the air from the heat shroud via the box?


    I have an original PA-12 box and based on the feedback to this question will either:


    • Connect it as per the Piper Parts book (although mount it to the firewall)
    • Modify it to just use 3 outlets as per the Wag Aero box
    • Buy a stainless steel Wag Aero box


    I'm looking forward to the experiences and opinions

    Thanks!!!
    Every day's a school day

  2. #2

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    i dont have one of these guys heat boxes but next time i will.http://www.aviacompinternational.com/heatboxes.html
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  3. #3

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    Quote Originally Posted by tempdoug View Post
    i dont have one of these guys heat boxes but next time i will.http://www.aviacompinternational.com/heatboxes.html
    These are the ones Wag Aero sell and also Aircraft Spruce etc. They have the warm air in and out connections only, hence my question about the cold air connection on the Piper box? Is it just to provide another source of cool air into the cabin, or something else?


    Sent from my iPad using SuperCub.Org mobile app
    Every day's a school day

  4. #4
    skywagon8a's Avatar
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    Use caution with Wag-Aero parts. Some are approved and some are not. They sell a lot of stuff to the experimental crowd. Sometimes it is difficult to determine whether the part they are selling is certificated for a particular airplane or not. Sometimes they imply that it is and it really isn't.
    N1PA
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  5. #5

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    Quote Originally Posted by skywagon8a View Post
    Use caution with Wag-Aero parts. Some are approved and some are not. They sell a lot of stuff to the experimental crowd. Sometimes it is difficult to determine whether the part they are selling is certificated for a particular airplane or not. Sometimes they imply that it is and it really isn't.
    Thanks for this SkyWagon!! Any thoughts on the cold air connection stuff please?
    Every day's a school day

  6. #6
    skywagon8a's Avatar
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    Sorry Phil, can't help with that.
    N1PA

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