DIY Glycol Chiller Rust

Systems, Gear, & DIY
1

Hi everyone,

I made a DIY glycol chiller out of a old cooler and a A/C unit a few years back.  The condenser on the AC unit is rusting and now my glycol liquid is a nasty orange.  Is there anything I can do to prevent the rust from getting worse?  Do I just make a fresh batch of glycol solution and run it till it dies?

Thanks

2

What kind of water are you using to dilute the glycol?  If it has chlorine in it that could be the problem.

3

I’m pretty sure I used distilled water a few years ago when I filled it up.  I may have topped it off with a bit of tap water though at some point which would have a had a little chlorine.

4

I would use distilled water or RO water to dilute the glycol.  That way you could be sure there was nothing in the water that could corrode your system.

5

My GF chiller specifically recommends distilled.