Best automotive ac expansion valves according to redditors

We found 2 Reddit comments discussing the best automotive ac expansion valves. We ranked the 2 resulting products by number of redditors who mentioned them. Here are the top 20.

1. UAC EX 10093C A/C Expansion Valve

1 mention
UAC EX 10093C A/C Expansion Valve
Brand New, OE replacement: UAC branded Block Expansion Valve100% Guaranteed Fit! Add your car (year/make/model) to Amazon's garage to confirmPremium ISO/TS 16949 quality; tested to meet or exceed OEM specificationsMaximum cooling efficiencyMachined ports guarantee exact fit
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2. Four Seasons 39045 Expansion Valve

1 mention
Four Seasons 39045 Expansion Valve
Four Seasons 39045 Block Type O-Ring Expansion Valve (39045)Part number: 39045Package Weight: 0.25 poundsPackage Dimensions: 5.08 H x 8.89 L x 6.858 W (centimeters)
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Top Reddit comments about Automotive Replacement Air Conditioning Expansion Valves:

u/patbak13 · 2 pointsr/BMWE36

I am not an A/C system master, but have read up on them a little when I was shopping for an E30 without A/C...

First of all, your E36 uses R12 refrigerant (pg 640-11 from the Bentley manual), but this unnecessary information. Before anything, take your car to an A/C shop and have them flush your system completely, this should be free because they can resell the refrigerant (If not pay you for it). Then do a leak test with a can of dyed r134a using a conversion kit fromyour local autozone/advanced auto/oreilys/etc. Something like this below.

http://www.amazon.com/Interdynamics-320-Retrofit-Kit/dp/B001AIZLQY

And then most people recommend replacing the expansion valve as well.

http://www.amazon.com/dp/B0019ILOF2/ref=asc_df_B0019ILOF24310609?smid=ATVPDKIKX0DER&tag=shopzilla0d-20&ascsubtag=shopzilla_rev_121-20;14643263694201161168710070301008005&linkCode=df0&creative=395093&creativeASIN=B0019ILOF2

Not sure on the accuracy of this information! But good luck! I got lucky with my E36 being R134a!

u/mattstryfe · 2 pointsr/S2000

I've redone the entire AC system myself after my compressor 'ate itself alive'. The proper way, is to replace everything. The reason for this is because of what you eluded too; the metal shavings. I opted to replace every single line (high and low), the compressor, and the expansion valve.

Once you have all new components you need to add the oil. The amount you add is dependent on how much is in the compressor (or the whole system). There are a few guides on this and HELMS manual has a calculation you must do. For sanity's sake, if you're close, you'll probably be alright. However, full disclosure, I am no HVAC expert.

  • You can use a compressor if you have one but you'll definitely have to remove every single component to ensure you get every single nook.
  • It might be. Remove it from the firewall and take a look. They're pretty cheap if you have to pick one up. I bought this one and it's been running fine for years.
  • No. Aside from a new serp belt if it's showing signs of wear.
  • You're right. Having this done by a shop is the only right way. They need to evacuate your entire system once you have it all sealed up. Then put new freon(whatever it is nowadays) into it. Then charge it to the proper PSI. (as i understand it).

    You can do ALL of the work yourself save for the charging/recharging/evacing.