Quick answer: hot tub running costs
- Lay-Z-Spa's figures: heater 2000 W, filter pump 50 W, massage 800 W; the socket must support 2050 W while heating.1
- Heating with the filter running costs 54p an hour at 26.32p per kWh. The filter alone: 1.3p an hour.
- Lay-Z-Spa: “The cost of running a Lay‑Z‑Spa hot tub depends on many individual circumstances.”1
- Last checked: 28 October 2026.
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Costs an hour
At full rated power while each part runs.
| Running | An hour |
|---|---|
| Heater and filter (2050 W) | 54p |
| Massage (800 W) | 21.1p |
| Filter pump (50 W) | 1.3p |
Electrical safety
Lay-Z-Spa: “No, extension cables cannot be used with a Lay‑Z‑Spa.” and “always use a grounded socket with RCD protection.”1
Who these figures cover
Costs use the Ofgem price cap average for England, Scotland and Wales, 26.32p per kWh by Direct Debit, 1 October to 31 December 2026. Your region and tariff change it.2
HMRC: “The temporary zero rate applies from 1 October 2026 to 30 June 2027.” The Budget on 28 October 2026 extended it from 31 March (announced; the legislation is due in early 2027). Gas stays at 5% VAT.3 In Northern Ireland, use the unit rate on your bill.