Safety & CO4 min read
What You Must Never Burn Indoors (And Why People Still Do)
Charcoal, generators, camping stoves and patio heaters kill people indoors every winter. The mechanism behind each, and what to use instead.
Indoor fuel, explained safely
Burning fuel indoors is fine — right up until it isn't.
UpFuel publishes independent, technically checked guides to kerosene, propane, natural gas and solid fuel used inside the home: the ventilation figures, the carbon monoxide numbers, the run costs and the appliance specs that manuals bury in the fine print.
Start here
The guides that answer the questions people ask before they light anything.
Fuel Conservation5 min read
Practical Ways to Save Fuel at Home and on the Road
Fuel saving that actually works, ranked by payback — driving habits, tyre pressure, servicing, cooking and heating, and the useless gadgets.
Transport & Industry4 min read
Which Fuel Is Used in Aeroplanes? Aviation Turbine Fuel Explained
Jets burn aviation turbine fuel, a kerosene grade sold as Jet A-1. Small piston aircraft use avgas. Here is why kerosene beats petrol.
Browse by topic
Kerosene
2 guidesHow kerosene heaters work indoors, which grades burn clean, run costs, wick care and the ventilation they actually need.
Propane
1 guideIndoor-rated propane heaters, oxygen depletion sensors, cylinder rules and why 'indoor safe' never means 'no ventilation'.
Natural Gas
1 guideFlued and flueless natural gas appliances, combustion air, and how mains gas compares with bottled fuels for indoor use.
Safety & CO
2 guidesCarbon monoxide, alarms, ventilation math and the failure modes that turn a working heater into a hazard.
Run Costs
1 guideCost per hour and cost per kWh for every common indoor fuel, with the arithmetic shown so you can redo it at your own prices.
Buying Guides
1 guideWhat to look for on the spec sheet — BTU ratings, ODS, tip-over cutoffs, certification marks — before you spend money.
Fuel Science
10 guidesCalorific value, ignition temperature, combustion products and what actually makes one fuel better than another.
Fossil Fuels
10 guidesWhat coal, petroleum and natural gas are, how they formed, why they run out, and which everyday fuels are and are not fossil fuels.
Cleaner Fuels
8 guidesLPG, CNG, biogas, hydrogen and fuel cells — which are genuinely cleaner, by how much, and what the trade-offs are.
Transport & Industry
6 guidesThe fuels that move aircraft, rockets, trains and power stations, and why each application picks the fuel it does.
Fuel Conservation
1 guidePractical ways to cut fuel use at home and on the road, and why alternatives to fossil fuels matter.
Latest guides
All guides →Transport & Industry4 min read
Which Fuels Can Be Used in an Internal Combustion Engine?
Petrol, diesel, CNG, LPG, ethanol and hydrogen all work in an IC engine. Coal does not — and why explains what these engines need from a fuel.
Safety & CO4 min read
What You Must Never Burn Indoors (And Why People Still Do)
Charcoal, generators, camping stoves and patio heaters kill people indoors every winter. The mechanism behind each, and what to use instead.
Transport & Industry3 min read
Pulverised Fuel: The Advantages, and the One That Isn't
Grinding coal to powder gives faster, more complete, more controllable combustion — but costs grinding power and makes far more fly ash.
Buying Guides5 min read
Indoor Fuel Heater Buying Checklist: The Nine Specs That Matter
Certification marks, ODS, tip-over cutoffs, BTU sizing and runtime — the spec-sheet items that decide whether a heater belongs in your room.
Fuel Conservation5 min read
Practical Ways to Save Fuel at Home and on the Road
Fuel saving that actually works, ranked by payback — driving habits, tyre pressure, servicing, cooking and heating, and the useless gadgets.
Transport & Industry3 min read
What Fuel Do Trains Run On in India?
Indian Railways runs mostly on electricity now, with diesel for unelectrified lines. How the split works and why the switch happened fast.
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