Propane gives heat without a fuel tank to fill or a flue to install, which is why it suits temporary and moving work. Output runs a very wide span here, from 14,330Btu per hour on a bottle-mounted machine up to 400,000Btu on the largest industrial bodies, so the same leaf covers a single work position and a whole building.
Radiant or forced air is the type decision. A radiant heater directs heat at what is in front of it, warming people and surfaces without moving air, which suits an open or partly open space. A forced air machine pushes warm air through a space and heats it as a whole, which suits an enclosed one.
Mounting decides how the heater is set up and moved. A bottle-mounted machine sits straight on the cylinder and needs nothing else, which makes it the quickest to deploy. A freestanding machine separates from the bottle and can be aimed independently. Industrial LPH bodies and cabinet gas heaters cover the fixed installations. Two cordless machines sit in the SIP range for work with no supply of any kind on site.
Supply is worth checking even on gas. Forced air machines need power for the fan, and the SIP Fireball DV bodies run 110V or 230V for site use while cordless Fireball machines need no supply at all. Draper Jet Force propane machines run 34,000 to 136,000 BTU through the middle. Questions go over WhatsApp on 07754288583 with the space being heated.