Swim Spa Running Costs UK — What Does It Actually Cost Per Month?
Total Monthly£80–£150
Electricity£60–£120/mo
Chemicals£20–£35/mo
Maintenance Time15–20 min/week
The Real Monthly Numbers
A well-insulated, mid-range swim spa used 3–4 times per week in the UK typically costs £80–£150 per month to run. If you see claims of £30/month, be sceptical — those figures come from warmer climates or ideal lab conditions, not British winters.
Electricity: The Biggest Cost
Electricity accounts for 70–80% of running costs. At current UK rates (~24p/kWh), maintaining temperature costs £60–£120/month depending on season and insulation. Winter months cost 30–40% more than summer.
The quality of your thermal cover has an enormous impact — a well-fitting hard cover reduces heat loss by up to 80%.
Chemicals: £20–£35/Month
Chlorine or bromine sanitiser, pH balancers, and periodic shock treatments. Test weekly, dose accurately, and avoid over-treating — overdosing is a common and unnecessary expense.
How to Keep Running Costs Low
- Invest in a quality thermal cover — replace when waterlogged or heavy
- Maintain a steady temperature rather than heating from cold each time
- Shelter from wind — a pergola or fence on the windward side makes a real difference
- Use off-peak electricity if on Economy 7 or similar tariff
- Choose a well-insulated swim spa — our Nuovo Swim 14ft and XL 19ft feature full-foam insulation
- Keep filters clean and water chemistry balanced
Perspective: £100–£150/month is roughly the cost of a family gym membership — except your swim spa is open 24 hours, provides hydrotherapy and relaxation as well as exercise, and is in your own garden.
