4-person inflatable hot tub running cost — Winter daily use (1.5 h, tub covered)
Winter daily use with a good insulating cover: higher maintenance fraction (15%) due to cold ambient temperature. A 4-person inflatable hot tub (1,500 W heater + 1,500 W pump) costs approximately £17.48/week at Ofgem cap 26.11p/kWh (1 July to 30 September 2026).
4-person inflatable hot tub — Winter daily use (1.5 h, tub covered): Active: 4.50 kWh (1.5 h × 3.0 kW). Standby: 5.06 kWh (22.5 h × 1.5 kW × 15%). Total/day: 9.56 kWh = £2.50. Weekly (7 days): £17.48. Annual: £908.82. Source: Which? — How much does a hot tub cost to run (electricity consumption data) + Ofgem (OGL v3.0).
- Per day (used)
- £2.50
- Per week (7 days)
- £17.48
- Per month
- £75.74
- Per year
- £908.82
Tub specification
- Seats
- 4 adults
- Heater
- 1,500 W
- Pump
- 1,500 W
- Active use
- 1.5 h/day
- Standby load
- 15% of heater
- Days used/week
- 7
Lay-Z-Spa Paris / Bestway 4-person published specs (2024): 1,500 W heater + 1,500 W blower
How the cost is worked out
- Active use: (1,500 W + 1,500 W) ÷ 1000 × 1.5 h = 4.50 kWh.
- Standby: 1,500 W ÷ 1000 × 22.5 h × 15% = 5.06 kWh.
- Daily total: 4.50 + 5.06 = 9.56 kWh × 26.11p = £2.50.
- Weekly: £2.50 × 7 days = £17.48.
- Annual: £17.48 × 52 = £908.82.
Same scenario — other tub sizes
Track hot tub running costs
Updated each time the Ofgem cap changes.
No spam. Unsubscribe anytime. A Gera Services product.
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.