What Is a Bioethanol Fireplace and How Does It Work?

A bioethanol fireplace is a fireplace that burns liquid alcohol instead of wood or gas. It produces a real, open flame — and needs no chimney, no flue, no gas line and no electricity.

That last sentence is the whole reason the category exists, and it follows from one fact of chemistry. This guide explains that fact, what it makes possible, and what it does not.

What is bioethanol?

Bioethanol is ethyl alcohol produced by fermenting plant material — typically corn, wheat, sugar beet or sugar cane. Chemically it is the same alcohol found in any spirit, distilled to a much higher concentration and denatured so it cannot be drunk.

For fireplace use, the working purity is 96 to 97 per cent. That band matters more than most people expect, and we cover why in our guide to choosing bioethanol fuel.

The reaction that removes the chimney

When ethanol burns with enough oxygen, it converts almost entirely into carbon dioxide and water vapour. Both are gases already present in the air you are breathing.

Compare that with wood. Wood is a complex solid that never burns completely: it leaves particulates, tar, soot and ash, and those have to go somewhere. That somewhere is a chimney.

Bioethanol leaves nothing solid behind. There is no smoke to extract, no soot to deposit, no ash to remove. With nothing to vent, the flue becomes unnecessary — and with it the building work, the sweeping, the permissions and the four-figure installation.

Everything else about these fireplaces follows from that single point.

How the appliance is built

The mechanism is deliberately simple, which is why there is so little to go wrong.

• The burner — a sealed metal reservoir, usually stainless steel, holding the liquid fuel. Fuel does not burn as liquid; it evaporates at the surface and the vapour is what ignites.
• The slider — a metal plate that opens and closes the burner opening. Opening it wider gives a bigger flame and more heat; closing it partially gives a smaller flame and a longer burn. It also serves as the snuffer.
• The glass — tempered panels that shield the flame from draughts and keep it visible from every side.
• The body — the structural base, in our case matte black steel, weighted for stability.

No electronics, no pump, no ignition system. You fill it, light it with a long lighter, and close it with the snuffer — see the step-by-step guide.

What it delivers

Real heat. Between two and three kilowatts, comparable to a plug-in electric heater, enough to noticeably warm a room of up to 30 m². And with no flue carrying heat away, practically all of it stays in the room — unlike an open wood fire, which loses most of its output up the chimney. More in do bioethanol fireplaces actually give off heat.

A defined burn. Tabletop models give 45 minutes to an hour per fill — the length of a dinner or an aperitif. The floor-standing ORA 80 holds a larger burner and gives around three hours, enough for a whole evening. Consumption runs 0.3 to 0.6 litres an hour depending on how far the burner is opened.

No smoke, no soot, no smell. Nothing settles on walls or fabrics. There is a brief alcohol note at lighting and at extinguishing, and nothing in between — see do bioethanol fireplaces smoke or smell.

Placement freedom. No chimney means no fixed position. It works in a flat, a rental, a room with no hearth, or a sheltered terrace — and it moves when you do.

What it is not

It is not a heating system. It warms one room, while it is burning, and it cannot be left unattended or run overnight.

It is not the cheapest source of heat — roughly £1 to £2 an hour against about 52p for an equivalent electric heater. We set out the arithmetic in full, including why the comparison misses what you are actually buying.

And it is a real flame, with real rules: never refuel a hot burner, never use water to extinguish it, keep a metre of clearance. Those three habits cover almost everything — our safety guide covers the rest.

How it compares

Against a wood burner, bioethanol trades heat output and fuel cost for the absence of a four-figure installation. A log burner fitted in a UK home without a chimney runs to between £4,600 and £7,300. Full comparison here.

Against an electric fireplace, it trades running cost and convenience for the one thing an LED cannot produce. Compared here.

And on the environment, the case is strong on air quality and more nuanced on carbon — we set it out honestly.

Which type suits which home

Freestanding models stand on the floor, carry a larger burner, burn longer, and suit homes with children since they cannot be knocked off a table. Tabletop models sit on furniture, move easily between rooms and terraces, and put the fire close to people.

Our choosing guide settles it in four questions, and if you live in a flat or rent, this guide is written for you.

The whole range is in the bioethanol fireplaces collection — from the floor-standing ORA 80 to the compact CUBE.

In one paragraph

A bioethanol fireplace burns plant-derived alcohol to give a real flame with genuine warmth, and because that combustion produces only carbon dioxide and water vapour, it needs no chimney and no installation. It is not a heating system and not the cheapest heat available. It is the only way to have an actual fire in a home that was never built for one.