Before I go and buy a new/used heater for my shop...does anyone have a Mr. Heater Propane Heater —
100,000 BTU, Model# F191925 propane shop heater for sale or similar?
I have changed to propane ( Local natural gas company ONG is a joke, cost wise.) and my installer tells me my old ifra-red natural gas heaters cannot be adapted to propane.....I don't understand why, he's not saying...seems like some kind of Masonic secret !!

as these heaters are exactly the same as the Mr Heater one above...just they are 20 years old.....what exactly is the difference between a propane and a natural gas heater.?
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