Unless your furnace is incredibly old and/or bad I can’t believe electric is cheaper than propane. I switched to it from oil and I’m saving hundreds of dollars a year.
It’s a 4 year old furnace.
My propane bills by month starting in November are typically: $500, $650, $700, $750, $600 with the first one being a fill-up for the time from the previous March to end of October.
This winter so far, my electric bills with the space heaters are $137, $224, $230.
I switched to a new electricity supplier after de-regulation and chose to experiment with the space heaters. They are actually more efficient at heating the rooms we use and cheaper as you can see above.
I replaced a 10 yr old gas unit w a more efficient hybrid system (heat pump/propane). My propane use dropped 40% and my electric dropped 15%.