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Hot Tub · Ofgem 1 July to 30 September 2026

6-person hard-shell hot tub running cost — Every other day (1 h)

A 1-hour session every other day — used for relaxation or recovery. A 6-person hard-shell hot tub (6,000 W heater + 2,000 W pump) costs approximately £17.08/week at Ofgem cap 26.11p/kWh (1 July to 30 September 2026).

6-person hard-shell hot tub — Every other day (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 (3 days): £17.08. Annual: £887.95. 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 (3 days)
£17.08
Per month
£74.00
Per year
£887.95

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
3

Hydropool / Jacuzzi 6-person hard-shell: 6 kW heater + 2 kW pump (Which? 2024)

How the cost is worked out

  1. Active use: (6,000 W + 2,000 W) ÷ 1000 × 1 h = 8.00 kWh.
  2. Standby: 6,000 W ÷ 1000 × 23.0 h × 10% = 13.80 kWh.
  3. Daily total: 8.00 + 13.80 = 21.80 kWh × 26.11p = £5.69.
  4. Weekly: £5.69 × 3 days = £17.08.
  5. Annual: £17.08 × 52 = £887.95.

Same scenario — other tub sizes

2-person inflatable hot tub: £2.69/wk4-person inflatable hot tub: £5.05/wk4-person hard-shell hot tub: £8.93/wk

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.