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2004 chevy trailblazer_lt
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417 Posts
Discussion Starter · #1 ·
i was just wondering if anyone has used the sub-zero a/c booster? they claim 18% colder air, i have seen other products that also claim 20-40% colder air?
 

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2003 chevy trailblazer_lt
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190 Posts
sales pitch

Good marketing sales pitch......... most vent temp range from 38* to 50* that's an average of 44* out the vent. So 18% of 44* is approx 37*.......... If you purchase, ck the temp before and the temp after and see what the difference will be.
 

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2003 chevy trailblazer_ls
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1,708 Posts
My experience was R-12 vent temp was 32 or so and 134a was 46 or so. I have a 30 lb can of one of the blends and the vent temp was 38. I needed this because I converted my ranger from R-12 to 134a and the evap was too small to cool the truck on 134A. The blend is 134a and IIRC 400 something and 122. I would need to look it up but the head pressure will go up and the evap. temp did go down. I would not try this in a system that was made for 134A.
 

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2004 chevy trailblazer_lt
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Discussion Starter · #4 ·
okay thanks, just wondering. The stuff that we're looking at is made for 134a ill check into it further not that i dont believe you guys.:)
 
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