6-person hard-shell hot tub running cost — Daily evening soak (1 h)
Switched on for an hour each evening — the most energy-intensive regular use. A 6-person hard-shell hot tub (6,000 W heater + 2,000 W pump) costs approximately £39.84/week at Ofgem cap 26.11p/kWh (1 July to 30 September 2026).
6-person hard-shell hot tub — Daily evening soak (1 h): Active: 8.00 kWh (1 h × 8.0 kW). Standby: 13.80 kWh (23.0 h × 6.0 kW × 10%). Total/day: 21.80 kWh = £5.69. Weekly (7 days): £39.84. Annual: £2071.88. Source: Which? — How much does a hot tub cost to run (electricity consumption data) + Ofgem (OGL v3.0).
- Per day (used)
- £5.69
- Per week (7 days)
- £39.84
- Per month
- £172.66
- Per year
- £2071.88
Tub specification
- Seats
- 6 adults
- Heater
- 6,000 W
- Pump
- 2,000 W
- Active use
- 1 h/day
- Standby load
- 10% of heater
- Days used/week
- 7
Hydropool / Jacuzzi 6-person hard-shell: 6 kW heater + 2 kW pump (Which? 2024)
How the cost is worked out
- Active use: (6,000 W + 2,000 W) ÷ 1000 × 1 h = 8.00 kWh.
- Standby: 6,000 W ÷ 1000 × 23.0 h × 10% = 13.80 kWh.
- Daily total: 8.00 + 13.80 = 21.80 kWh × 26.11p = £5.69.
- Weekly: £5.69 × 7 days = £39.84.
- Annual: £39.84 × 52 = £2071.88.
Same scenario — other tub sizes
Track hot tub running costs
Updated each time the Ofgem cap changes.
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Heater and pump specs from Which? — How much does a hot tub cost to run (electricity consumption data). Unit rate 26.11p/kWh from Ofgem — Energy price cap unit rates and standing charges (1 July to 30 September 2026), OGL v3.0.