Bio-ethanol fireplaces burn a plant-derived alcohol that produces heat, water vapour and a small amount of CO₂ — no smoke, no soot, no flue penetration. That makes them the only real option for many apartments and heritage buildings, but they come with their own set of trade-offs.
How much heat do they actually produce
A typical bio-ethanol burner delivers 2–4 kW — enough to lift a small lounge by a few degrees and provide the visual warmth of a real flame, but not enough to be a home's primary heat source in Cape Town winter. Think ambience and supplementary heat, not whole-house heating.
Running costs
Quality bio-ethanol fuel runs at roughly R80–R110 per litre; a typical burner uses 0.3–0.5 litres per hour. That works out to R30–R55 per hour of use — more expensive than wood or gas per kW, but you save on installation, flue, and maintenance.
Ventilation and safety
- Always operate in a room with at least one openable window; keep a small cross-draught.
- Never refill a hot burner — allow it to cool for 15 minutes first.
- Use only certified bio-ethanol fuel; never methylated spirits.
- Keep a Class B fire extinguisher within reach.
Where they excel
- Apartments where a flue is not permitted by the body corporate.
- Heritage homes where roof and wall penetrations are restricted.
- Freestanding sculptural pieces in bedrooms, dining rooms or outdoors.
Bio-ethanol vs a wood fireplace: the real cost
Bio-ethanol wins on installation — there is none. A wood fireplace needs a flue and an installer, but it heats a whole room for a fraction of the running cost. For comparison, a fully installed closed-combustion fireplace breaks down like this at our prices (incl. VAT):
- Installation: R 5 500 single-storey or R 8 000 double-storey, including one core drill.
- Flue kit: R 6 715 for fireplaces up to 10 kW (Ø130 mm), R 7 390 for 11–15 kW.
- Transport: R 500 for the first 20 km, then R 10 per km.
- This month's Magma special: R 23 970 fully installed.
Who should choose bio-ethanol
Apartment owners in Sea Point, Green Point, Century City and Claremont, where the body corporate won't allow a flue through the roof, are the most common buyers. So are owners of heritage homes in Bo-Kaap or Stellenbosch's historic core, and anyone wanting a flame on a patio or in a bedroom where a wood fireplace isn't practical.
If you live in a freestanding house in Durbanville, Paarl or on the West Coast and want real winter heat, a wood or gas fireplace will serve you far better — bio-ethanol works best alongside it, not instead of it.
Buying tips
- Choose a burner with a closing lid to snuff the flame safely.
- Check the tank size — larger tanks give longer burns between refills.
- Buy fuel in 5-litre containers; it's cheaper per litre than small bottles.
- Place the unit well away from curtains and allow at least 1 m clearance above.
Quick answers
Do bio-ethanol fireplaces smell? Quality fuel burns almost odourless. A faint smell usually means cheap fuel or a burner that needs cleaning.
Can a bio-ethanol fireplace heat my whole house? No. At 2–4 kW it adds warmth to one room. For whole-home heat in a Cape winter, choose a wood or gas fireplace.
Do I need a certificate to install one? No flue or gas certificate is needed, which is why they suit apartments. Check your body corporate rules before buying.
Can I use one outdoors? Yes — tabletop and freestanding burners make a lovely patio feature, but wind makes the flame harder to control, so choose a model with a glass screen and keep it out of the south-easter. For real outdoor heat on a Cape evening, a braai or boma fire pit throws far more warmth.
Written by
Progress Group
Fireplace, braai and gas specialists since 1990 — showroom in Bellville, installations across Cape Town and the Western Cape.