Propane heat: Does it matter?

[Brian Knox]

If a property I'm looking at (3BR, 1.5BA) uses propane for heat, is that something to be wary of?

I've heard bad things, but I'm wondering how much of it is rumor and what the facts are.

Is it inefficient? I understand that filling a tank can cost a fair amount up front, but does it last for a while in a warm-ish climate (SC)?

Main question: Would it prevent you from pursuing a property as a buy-and-hold rental if it was heated by propane?

Thanks for any insight!