AC Auxiliary Fan Recommendations

[BlueMonday]

I need to replace my Auxiliary fan as without it my recently converted AC system is not functioning. I'm looking for recommendations at various price points. I've seen Spal mentioned but wasn't sure what other options people recommend.

I admit I haven't yet researched effort on doing the job, but any advice there would be appreciated too. Is it just a case of swapping a new one in? Any things to look out for?

Thanks!

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[jeffnhiscars]

Some where in my barn find build thread is everything you need to know about the fan upgrade as well as the rest of the ac system

[flyboyx]

get a fan from an e32 740 or 750i. should cost less than 40 bucks at a junk yard. you get 2 factory speeds and perhaps 3x the airflow of the original.