[non-entity]

I've often wondered how much it would cost to learn HVAC stuff myself and then set up a "business" so I could purchase the the necessary items to DIY AC fixes.

[smileysteve]

You can get books from my local library that can lead towards getting a license in hvac.

Without a license, you can learn to safely change capacitors, contactors, 24v transformers, and thermostats.