Heat Pump and space required - can it be inside a barn?

[JamesW]

I think that if I build stone walls on 2 sides of the unit, back it up to exterior barn wall and put a hedge in front (using a vertically fanned heat exchange) then this should go some way to reducing any sound.

You still have to be careful not to block air flow towards the heater. Air flows to the heater from all sides and is pushed out the top by the fan.

 

[Soupy]

You should look into a propane tank and delivery service.