Is heat a boring subject?(not if you're cold)

I used an Olympian 3,000 but heater before I bought a used plat cat, the only difference is one is vented and thermostatically controlled, and one is not.

The Coleman heater is OK, though I used one and it made an awful smell. They should be made stable since anything that is not secured can fall over and start fires.
Cheaper, and certainly safer than using a non-catalytic heater indoors.

These I don't recommend for overnight use because the fuel source is connected to the heater. Unless you can place the fuel canister outside and bring the fuel to the heater using a hose. permanent heaters in RV's are required to have the fuel source outside of the vehicle.

For a permanent heater, my first one, an Olympian 3000 , was mounted behind the passenger seat. It is still there. this, combined with the 6000 Btu heater, give a total of 9000 Btu.
I installed the overhead skylight to help vent the Olympian, and it helped keep condensation down, a byproduct of the catalytic combustion.

There are also trace hazardous elements, and carbon dioxide.
So, lot's of ventilation is need to keep this to a minimum when using a non-vented catalytic heater.

Do you know the BTU rating of the Coleman?

Robert
1982 Westfalia