It typically costs £25–£37.50 per month (around £400–£500 per year) to run a hot tub in the UK — driven by energy tariff, usage, insulation, and heater efficiency.
Besides inquiring about features and installation procedures, one of the most common hot tub questions people ask is: how much does it cost to run a hot tub? It’s a fair concern — but the exact cost depends on usage, size, insulation, and efficiency (have you seen the best luxury hot tubs?).
How much does it cost to run a hot tub per month?
| Usage | Estimated Cost |
|---|---|
| Daily (few hours) | £1.70–£2.50 |
| Monthly (30 days) | £25–£37.50 |
| Yearly (365 days) | £400–£500 |
Pro tip
Most owners don’t use their tub daily — your real monthly cost is often lower.
Average total running cost (beyond energy)
Water & chemicals
£250–£300 / year
£250–£300 / year
Servicing & maintenance (why it matters)
£200–£500 / year
£200–£500 / year
Typical total: £850–£1,300 per year.
How to reduce running costs
- Upgrade insulation for better heat retention.
- Use a thermal cover to prevent heat loss by evaporation.
- Maintain regularly to avoid inefficient components and breakdowns.
- Compare energy tariffs to cut per-kWh costs.
- Leave it on between frequent uses — reheating from cold costs more (efficiency tips).
Biggest saver: Air-source heat pumps
Our tests show air-source heat pumps can use ~3.36kWh vs ~7kWh for standard heaters — cutting daily cost to ~£0.85 (≈50% saving).
Quick monthly cost estimator
Edit to match your tariff.
Daily kWh: 7.2 • Monthly cost: £0.00
Cut your running costs by up to ~50%
Ask about hot tubs with air-source heat pumps
Ask about hot tubs with air-source heat pumps
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