Is Mr heater Made in USA?
Keeping this in consideration, are Mr heaters safe indoors?
This portable heater is safe to use indoors and it is completely portable. The Mr. Heater F232000 heater is an indoor radiant heater, which provides heat quickly and efficiently to your room so that you will be feeling warmer in no time.
Similarly, you may ask, where was the heater invented?
Franz San Galli, a Prussian-born Russian businessman living in St. Petersburg, invented the radiator between 1855 and 1857, which was a major step in the final shaping of modern central heating.
Fitting a 20lb propane tank The obvious benefit is extended run time. For example, two 1lb bottles will give you around 3 to 12 hours of heat (depending on what setting it's on), whereas the two 20lb propane tanks last for 50 to 220 hours (again depending on the setting).