2-person inflatable hot tub running cost — Standby / maintain temperature only
Tub is kept hot but not used — standby heating cost only. A 2-person inflatable hot tub (800 W heater + 800 W pump) costs approximately £3.51/week at Ofgem cap 26.11p/kWh (1 July to 30 September 2026).
2-person inflatable hot tub — Standby / maintain temperature only: Active: 0.00 kWh (0 h × 1.6 kW). Standby: 1.92 kWh (24.0 h × 0.8 kW × 10%). Total/day: 1.92 kWh = 50.1p. Weekly (7 days): £3.51. Annual: £182.48. Source: Which? — How much does a hot tub cost to run (electricity consumption data) + Ofgem (OGL v3.0).
- Per day (used)
- 50.1p
- Per week (7 days)
- £3.51
- Per month
- £15.21
- Per year
- £182.48
Tub specification
- Seats
- 2 adults
- Heater
- 800 W
- Pump
- 800 W
- Active use
- 0 h/day
- Standby load
- 10% of heater
- Days used/week
- 7
Lay-Z-Spa Miami / Coleman SaluSpa published specs (2024): 800 W heater + 800 W blower motor
How the cost is worked out
- Active use: (800 W + 800 W) ÷ 1000 × 0 h = 0.00 kWh.
- Standby: 800 W ÷ 1000 × 24.0 h × 10% = 1.92 kWh.
- Daily total: 0.00 + 1.92 = 1.92 kWh × 26.11p = 50.1p.
- Weekly: 50.1p × 7 days = £3.51.
- Annual: £3.51 × 52 = £182.48.
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.