Hello All & Merry Christmas !

My girlfriend has a small 880 sq. ft. modular home in southern Sierra Mountains , California

She has a small natural gas heater that the blower is no longer working ..... She has been looking for a replacement with very little luck.

We have been looking at portable propane heaters ? and small electric heaters and are just not certain which way to go ?

Any advice on a solution ? greatly appreciated ! I just don't totally trust her home electric system as it's 60 + years old

The temp can get into teens overnight ...... Thank you !