Gas vs Wood-Burning Fireplaces: South Africa Running Costs and Comparison

Gas vs Wood-burning Fireplaces: Which One Actually Makes Sense?

We install both gas and wood-burning fireplaces across Cape Town, and the question comes up every single time: which is better? The honest answer is that it depends on how you live, what you can afford to run, and how much effort you’re willing to put in. But there are some clear winners depending on your situation. Let’s break it down.

How They Actually Perform

A gas fireplace gives you instant heat. Push a button or flip a switch and the flames are there. Adjust the height, set a timer, walk away. The warmth is consistent and predictable — unlike an open grill where heat escapes. Most gas fireplaces — and gas braais — run at 80-90% efficiency, which means almost all the gas you pay for turns into heat in your room.

A wood-burning fireplace takes more work. You need firelighters, kindling, and dry wood. The heat builds slowly. But once it’s going, a closed-combustion wood stove delivers a deeper, more penetrating warmth than gas. The kind that heats your bones — something gas braais struggle to replicate, not just the air. Closed-combustion units hit 70-80% efficiency — far better than open fireplaces at 10-35%.

Tony Jones from Fireplace Warehouse put it well: it costs about R20 per hour to run a gas stove, while you can heat your home with wood for about R2000 for the entire winter. That’s a massive difference if you’re using your fireplace daily.

Running Costs: The Real Numbers

Let’s talk money because that’s what actually drives the decision, including upfront cost differences for most South African homeowners.

Gas fireplace running costs: A standard 9kg LPG cylinder runs a gas heater for about 15-18 hours on medium. In winter, you might use two to three cylinders per month. That’s R600 to R1000 per month for one room. Gas prices fluctuate and supply shortages happen during peak winter demand.

Wood fireplace running costs: A bakkie load of seasoned hardwood (Blue Gum or Sekelbos) costs R800 to R1500 depending on your area. That typically lasts a full winter season for a moderate-sized home. Per day, you’re looking at R10 to R15 — cheaper than gas and much cheaper than electric panel heaters.

Electric heating for comparison: A single 2kW heater running 5 hours a day pushes R500 to R700 onto your monthly bill. For one room. Multiply that by three rooms and you’re paying more than a wood fireplace costs all winter. And loadshedding makes electric heating unreliable unless you have inverter backup.

Installation: What You’re Getting Into

A gas fireplace — or a gas braai — needs a gas line connection and proper venting. Direct vent systems are common in modern homes — they draw air from outside and vent exhaust back out, which means no chimney needed. But you still need a professional installer for the gas connection. Installation costs range from R15000 to R35000 depending on whether you need a flue system or can use direct vent. Gas braais follow a similar pattern — professional installation is always worth the investment.

A wood-burning fireplace needs a proper flue system, adequate clearances from combustibles, and structural support for chimney components. Installation costs are similar at R12000 to R30000. The difference is that a wood fireplace often adds more value to your property — a built-in braai or fireplace is a permanent feature that buyers notice.

For apartments and sectional title homes, gas is usually the only option. Gas braais follow similar rules — body corporates often have restrictions on open-flame cooking. Body corporates don’t allow chimneys. A flueless gas unit works well in a flat where space is tight and you can’t lug wood upstairs.

What About Loadshedding?

In the wood vs gas debate for reliability, wood wins hands down. When Eskom switches off the power, your wood-burning fireplace keeps working. No grid dependency. For many South African homeowners, this alone is reason enough to choose wood. Gas fireplaces that use LPG tanks (bottled gas) also work during loadshedding, but piped gas depends on pressure systems that may or may not have backup.

Maintenance and Effort

Gas fireplaces need an annual service — burner check, safety valve test, vent inspection. That’s about it. No ash, no soot, no woodpile to manage. If you want heat without hassle, gas is the answer.

Wood fireplaces and wood braais both need regular attention. Clean the ash after every few fires. Sweep the chimney at least once a year to prevent creosote buildup, which causes chimney fires. Store your wood properly — undercover, off the ground, and seasoned for at least six months. Wet wood smokes, doesn’t heat, and damages your flue.

Safety Considerations

Modern gas fireplaces include oxygen depletion sensors that shut off the gas if oxygen levels drop too low. Safety shut-off valves are standard. But gas leaks are a real risk — professional installation and regular inspections are non-negotiable. South African law doesn’t allow vent-free gas fireplaces in bedrooms or bathrooms.

Wood fireplaces carry different risks: chimney fires from creosote, carbon monoxide from poor draft, and sparks from open units. A closed-combustion wood stove eliminates most spark risk. Always use dry, seasoned wood — wet or green wood creates more smoke and creosote.

What About Asthma and Air Quality?

This matters more than most people think. Gas fireplaces burn cleaner and produce fewer particulates. If anyone in your household has asthma or respiratory issues, gas is the safer indoor option. Wood smoke contains fine particles, carbon monoxide, and nitrogen oxides that can trigger asthma attacks and aggravate existing conditions.

That said, a well-maintained closed-combustion wood stove with properly seasoned wood produces significantly less smoke than an open fireplace. It’s not gas-clean, but it’s much better than an open hearth.

Our Recommendation

In the wood vs gas debate for daily heating in a family home, a closed-combustion wood stove wins. Cheaper to run, works during loadshedding, and adds proper value to your property.

For convenience in a modern home or apartment: gas fireplace. Instant heat, minimal maintenance, clean operation. Works especially well with a remote control for lazy evenings.

For a holiday home or weekend use: wood. You won’t mind the effort when you’re only lighting it once or twice a week, and the ambience is hard to beat.

Gas Braais vs Wood Braais: Does the Same Logic Apply Outdoors?

Everything we’ve covered about indoor fireplaces maps almost perfectly to your outdoor setup. The wood vs gas debate doesn’t end at your back door — it follows you straight to the braai.

Gas braais are booming in South Africa right now, especially in newer estates around Durbanville, Paarl, and the Atlantic Seaboard. And it makes sense. You get home at 6pm on a Tuesday, you’re not spending 45 minutes getting coals right. A gas braai fires up in seconds. Burgers on, done, cleaned up by 7:30. For weeknight cooking, nothing beats it.

But here’s the thing. Ask any South African what a real braai tastes like, and they’re not talking about gas. They’re talking about wood coals, slow heat, smoke working into the meat. A wood braai on a Saturday afternoon with friends — that’s a different experience entirely. You can’t replicate that smoky grill flavour with a gas flame, no matter how expensive the unit is.

Running costs outdoors follow the same pattern as indoors. Gas braais chew through cylinders — a 9kg bottle lasts maybe 8-12 hours of cooking. At R400+ per refill, that adds up if you’re braaiing twice a week. Wood braais cost almost nothing if you source your own wood, or R100-200 per weekend session with bought hardwood.

Most of our clients in Cape Town end up with both. Gas braai for the quick midweek grill, wood braai for the weekend sessions. If you’re only choosing one, ask yourself: do you braai to eat, or do you braai to braai? Your answer tells you which way to go.

Upfront Costs: What You’ll Actually Spend

People always ask about running costs first. But the upfront cost is where the real sticker shock hits — and it’s different for every setup.

A gas fireplace installed properly runs R15,000 to R35,000 depending on whether you need a flue system or can use a direct-vent wall exit. The unit itself might be R8,000 to R20,000, then installation, gas connection, and finishing adds the rest.

Wood fireplaces land between R12,000 and R30,000 installed. Closed-combustion units cost more upfront than open hearths, but they pay for themselves within two winters through fuel savings.

Outdoors, the spread is even wider. A quality gas braai — we’re talking Weber, Cadac commercial-grade, or a built-in unit — runs R8,000 to R40,000. That includes the gas braai unit, regulator, hose, and professional fitting. A basic wood braai? You can build a solid brick braai for R1,500 to R5,000, or go custom with a built-in setup for R10,000 to R25,000.

The pattern is consistent across braais and fireplaces: gas costs more to buy and more to run, but saves you time and effort. Wood costs less everywhere except in the hours you’ll spend managing fuel and cleaning up. Pick the trade-off that fits your life.

What Is the Cheapest Type of Fire to Run?

If running cost is your main concern, wood wins by a country mile — for both fireplaces and braais. A full winter’s heating from a closed-combustion wood fireplace costs R2,000 to R3,000. The same heating from gas will set you back R3,000 to R6,000. Electric? Don’t even ask. A single panel heater running daily hits R500-700 per month per room.

Anthracite sits in the middle. It burns longer and hotter than wood, costs around R3,000 to R4,000 per winter, and produces less smoke. It’s a solid middle ground if you want wood-style heating without the constant fire management.

The wood vs gas cost gap gets even bigger outdoors. Wood braais cost almost nothing to fuel — especially if you’re buying offcuts from a sawmill or using your own trees. Gas braais will run you R200-400 per month if you’re cooking regularly.

Bottom line: wood is cheapest, anthracite is the low-effort compromise, gas is the convenience premium, and electric is the most expensive option across the board.

Frequently Asked Questions

What Are the Downsides of a Gas Fireplace?

Running costs are the biggest drawback — R20 per hour adds up quickly if you’re heating daily through winter. Gas is also a fossil fuel, so there’s an environmental consideration. LPG supply isn’t always reliable during peak demand. And while gas fireplaces are cleaner, they lack the sensory experience of a real wood fire — no crackling, no smell, no building the fire.

What Type of Gas Fireplace is Best?

For most South African homes, a direct-vent gas fireplace is the best balance of efficiency and installation simplicity. It vents through an exterior wall, so no chimney is needed. For bedrooms, only balanced-flue units are legally allowed. For outdoor cooking, gas braais offer more flexibility with venting requirements. For open-plan living areas, a freestanding gas fireplace with good heat output (8-12kW) covers most spaces. Choose a unit rated for your room’s square metreage — oversized fireplaces waste gas and undersized ones won’t keep you warm.

Is it a Good Idea to Have a Gas Fireplace?

Yes, if you value convenience, clean operation, and consistent heat. Gas fireplaces are particularly good for daily use, elderly homeowners who can’t manage wood, and homes where wood storage isn’t practical. They’re also excellent as supplementary heating in rooms that your primary system doesn’t reach well. The main trade-off is higher running costs versus wood.

What Kind of Fireplace is Best for Asthma?

A gas fireplace is the best option for asthma sufferers. It produces no smoke, no particulate matter, and no creosote. Look for a direct-vent or balanced-flue model that completely separates combustion air from indoor air. If you prefer wood, a closed-combustion stove with proper flue drafting minimises indoor smoke exposure, but it’s never as clean as gas. Avoid open wood fireplaces entirely if anyone in the household has respiratory issues.

How Much Does it Cost to Run a Gas Fireplace vs Wood Fireplace?

Gas: approximately R20 per hour, or R600-R1000 per month for daily winter use. Wood: approximately R2000 for an entire winter season with a good supply of seasoned hardwood. Over 5 years, the savings on wood are substantial — potentially R30000 to R50000 less than running gas daily. But factor in your time: sourcing, storing, and tending a wood fire takes effort that gas doesn’t require.

Is a Gas Fireplace or Wood Fireplace Better for Loadshedding?

A wood-burning fireplace wins here. Zero grid dependency. A bottled gas (LPG) fireplace also works during loadshedding, but you need to keep spare cylinders. Piped gas may or may not work depending on whether the pressure system has backup power. For guaranteed off-grid heating, wood is the answer.

What is a Closed Combustion Fireplace?

A closed-combustion fireplace is a wood-burning unit with a sealed glass door and controlled air intake. Instead of burning in an open hearth, the fire burns in an enclosed firebox with regulated airflow. This pushes efficiency from 10-35% (open fireplace) to 70-80%. Less wood, more heat, less smoke. They’re the biggest growth area in South African fireplaces because they solve the main problems with traditional wood fires: inefficiency, pollution, and heat loss up the chimney.

Can a Gas Fireplace Heat a Whole Room?

A properly sized gas fireplace or gas braai absolutely can. For a standard 30-40 square metre living room, an 8-12kW gas fireplace provides sufficient heat. Use a fireplace output calculator to match the unit to your room volume — multiply length x width x height. Most suppliers have these calculators on their websites. The key is sizing correctly: too big and you’ll waste gas with the thermostat constantly cycling, too small and you’ll be cold.

Does a Wood Fireplace Add Value to your Home?

Yes. A well-installed, quality wood-burning fireplace (particularly a built-in or closed-combustion model) adds tangible value to a South African property. Buyers see it as a permanent feature that reduces heating costs and enhances lifestyle. A freestanding gas unit adds less value because it’s portable and not considered a fixture. Budget R15000-30000 for installation, and you’ll likely recover that and more on resale in a desirable area.