LP usage

Going from a ‘reverse engineering’ point of view, spec sheet says your Winnie has an 18 gallon tank, if your gauge is even roughly close, and assuming it really was full, you’ve used about 13 gallons. Winnie also lists your furnace as being a 32k BTU input unit. Propane is about 91k BTU per gallon.

So 13 gallons times 91k is about 1.2 million BTU, or about 37.5 hours of furnace run time, that’s about 7.5 hours a day for 5 days.

Does that sound about right to you?

That sounds like a pretty small tank or excessive propane use.

Is the reluctance to use LP a matter of refilling it, or just money?

Trying to remember what we used in the Class A, 18 gal tank I seem to think,
living in FL, cold months of Jan/Feb... seemed like a tank for 14 days. I had sun to warm it up inside during the day. An electric heater helped during the real cold days.

I currently have a 31' fifth-wheel, heat at 65 at night, 72 in a.m., sun warms it up later on, during "cold" weather (to a Floridian) 1 30# tank a week, think that equals like 7.3 gallons?

Sounds like you are basically within reason.

I guess that is why you often see RV's wintering with a big bottle of propane connected outside. Your current usage seem to indicate about 7-8 days under those conditions.

I would certainly go up to the max with electric heaters instead of the propane furnace, but do watch if it gets colder that your tanks and valves are protected.

I like pipe tape around sensitive spots that comes on when the built in thermostat calls for hear.