Wood-Burning vs Electric Sauna: Which Is Right for Your Garden?
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Every garden sauna buyer hits the same fork in the road: wood-burning or electric? It's the single biggest decision that shapes the experience, installation requirements, running costs, and where your sauna can go. Here's the honest comparison.
The Experience
Wood-burning is ritualistic. You load logs, light the fire, wait 40–60 minutes for heat to build. The crackling sound, the smell of burning birch, the visible flames through the glass door — it's a sensory experience that electric simply can't replicate. The heat feels different too: softer, drier at the top, and there's a quality to it that traditional Finnish sauna purists insist on.
Electric is convenient. Press a button (or tap your phone with a Wi-Fi module), and the sauna reaches 80°C in 30–40 minutes. The temperature stays precisely where you set it. No ash to clean, no firewood to store, no chimney to maintain. If you want a spontaneous Tuesday evening sauna with zero preparation, electric wins.
Installation Requirements
| Factor | Wood-Burning | Electric |
|---|---|---|
| Electrical supply | None needed (battery LEDs optional) | Dedicated 32A supply required |
| Electrician cost | £0 | £400–£800 |
| Chimney/flue | Yes — included with heater | Not needed |
| Clearance from boundaries | Check local rules (typically 1m+) | Same |
| Firewood storage | Yes — need dry storage nearby | Not needed |
| Ventilation | Built into sauna design | Built into sauna design |
Running Costs Compared
At current 2026 UK prices:
- Electric (Harvia Cilindro 9kW): £1.50–£2.00 per session, approximately £230–£310/year at 3 sessions/week
- Wood-burning (Harvia 20 Pro): £5–£8 per session in kiln-dried hardwood, approximately £780–£1,250/year at 3 sessions/week
Electric is significantly cheaper to run. But wood-burning has zero upfront electrical installation cost. Over 5 years, the total cost of ownership is surprisingly similar. Read our full sauna running costs breakdown.
Maintenance
Wood-burning: Empty the ash box after every 2–3 sessions. Clean the chimney once or twice a year (or hire a sweep for £60–£80). Inspect the flue seals annually. Store firewood under cover to keep it dry.
Electric: Virtually maintenance-free. Replace sauna stones every 1–2 years (£20–£40). Wipe down the heater guard occasionally. That's it.
Where Can You Put Each Type?
Wood-burning saunas work anywhere — on-grid, off-grid, rural fields, campsites, festival grounds. No power needed. This is why wood-burning is the standard choice for mobile sauna businesses and remote locations.
Electric saunas need mains power. If your sauna is more than 20–30 metres from your consumer unit, the cable run gets expensive. Check with an electrician before committing.
Our Range: Both Options Available
Every sauna in our outdoor range is available with either heater type:
- Heat Quad 5-Person — Electric from £9,990 / Wood-burning from £10,400
- M-Sanctuary 4-6 Person — Electric from £11,499 / Wood-burning from £11,999
- The Sanctuary — Electric from £14,995 / Wood-burning from £15,699
- Fort Soleil 5-Person — Electric from £14,499 / Wood-burning from £15,199
- The Hideout 6-Person — Electric from £19,995 / Wood-burning from £20,499
Browse our full outdoor sauna collection.
The Verdict
Choose wood-burning if: you love the ritual, you're off-grid or in a remote location, you're building a mobile sauna business, or the authentic experience matters more than convenience.
Choose electric if: you want push-button convenience, lower running costs, minimal maintenance, and you have mains power available.
Neither is objectively "better." They're different experiences. Many of our customers who start with electric end up adding a wood-burning sauna later — and vice versa.
Frequently Asked Questions
Is a wood-burning sauna better than electric?
Neither is objectively better. Wood-burning offers a more authentic, ritualistic experience with no electricity needed. Electric is more convenient with lower running costs and minimal maintenance. The best choice depends on your location, lifestyle, and what you want from the sauna experience.
Can I convert a wood-burning sauna to electric later?
It's possible but not straightforward. The chimney opening needs sealing, the ventilation may need adjusting, and you'll need a 32A electrical supply run to the sauna. It's generally more cost-effective to choose the right heater from the start.
Which heater heats up faster?
Electric heaters typically reach 80°C in 30–40 minutes. Wood-burning takes 40–60 minutes depending on wood quality and outdoor temperature. The difference is 10–20 minutes in practice.
Do wood-burning saunas need planning permission?
In most cases, no — garden saunas fall under permitted development. However, the chimney adds height, so check with your local planning authority if the total structure exceeds 2.5m or is within 2m of a boundary.
Need help deciding? Call 0330 133 6617 — we'll talk through your setup and recommend the right heater for your situation.