Testing newly purchased Evap Cores and other HVAC items

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Diametric
Posts: 38
Joined: Mon Aug 07, 2017 3:13 pm

Testing newly purchased Evap Cores and other HVAC items

Post by Diametric »

I maintain a personal inventory of Evap Cores, Condensers and A/C hoses for my hobby of collecting and maintaining older Dodge Grand Caravans.

Every time I get a new one I used to wonder if it's got any leaks (Oh, I worry about the AC equipment as well :-).

installing it immediately on the vehicle can reveal leaks in time to return defective items, but still the work to install a defective (Leaking) Evap core, condenser etc just to remove it, send it back, get a replacement and do it all again is daunting. So here's how I test my cores and any part that is supposed to hold pressure (by testing vacuum) before I use it.

Vacuum is the standard method for testing AC systems for pressure right? (I could use positive pressure of course but the stoppers might pop out)

This is mainly for those new to Automotive AC since I'm sure the Pros here have their way of doing it. Probably better. But this is a really cheap way I test mine before shelving them for the future...or immediate use. Show us your setup (and a link to a massive discount coupon please lol)
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They have these hand operated vacuum pumps for about $25.00 on Amazon
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