Non-mains heating

Propane or kerosene heaters are in wide use in the US. Here is one reputable brand:

I see you are posting from London. Perhaps this will be of use:

You are asking a lot. About the only thing I can think of, and would not want to use myself. would be a kerosene heater. They tend to smell, have been known to have CO problems and have been responsible for too many fires to make me happy.

Get a porta-nuke heater

Thanks for the replies. After reading what you say and the links, I don't think a portable combustion heater would be a good idea.

I note that one website discussing Kerosene heater safety says the following

"Newer models are manufactured with numerous safety features, but operator errors such as using gasoline instead of kerosene, failure to provide adequate ventilation, fuel spills, etc. have resulted in numerous home fires."

Using gasoline instead of kerosene? Would this sort of thing qualify for the Darwin award?

you might be better with a single super insulated room with say 2 feet of insulation perhaps foam to minimizes losses.

still you need water sewer lines and prevent them from freezing and enough ventilation so you can live.

sadly theres no free lunch and wood pellets can be expensive...

You don't want electric, you don't want gas, you don't want a portable combustion heater... Try using people, as in "the matrix".

I had a flooded basement during a power outage. Every 2 hours, 24/7, for a week I had to put gasoline in a pump, and every 6 hours kerosene in a heater. I am a bit surprised I didn't get them mixed up.

"Mains" sounds UKsian. If an 8' cube has 2' of Styrofoam insulation with a thermal conductance of 6x8'x8'/(24xR5) = 3.2 Btu/h-F, a 300 Btu/h person could warm it 300/3.2 = 94 F. Then again, I bought a $10 pair of British Army surplus Arctic pants with 1" of padding.

A writer might enjoy a trash can with a tilting lid that would ignite balls of paper tossed into the lid, maybe something with a propane torch and a small chimney to the outdoors.

Nick

Hi, Real small? Camping stove. Coleman type.

I used a gasoline heater for years, but it required an exhaust.

Yea, but I have seen it done a few times around here. It is a sad thing to have happen.

Kero containers are yellow, gasoline containers are red.

Blue for diesel.

I can't remember where I heard this, but Coleman type stoves emit a LOT of carbon monoxide. Also charcoal pumps out monoxide.

Would not be safe to use indoors.