The Homemade Heat Pump Manifesto

[Vlad]

Theprof,

I guess Klimaire is a mini split AC unit that uses R410a. If it is I think propane is not the best option.

1. Capacity will change. From 12k BTU you will get only 9k or 10k who knows?

2. All your safety devices are for much higher pressure range. Just as an example your high pressure switch is hard to trigger with R290.

If you want more "help" we need more info.