Free tool
What will a hot tub really cost to run?
Plug in your tub's heater and pump, your electricity rate and your upkeep, and see the monthly, yearly and ten-year picture.
Electricity / month
$46
289 kWh
All running costs / month
$79
Per year
$945
10-year total
$9,448
running costs only
Where the electricity goes
That works out to about $4.54 per soak across all running costs.
How this is calculated
Monthly kWh = (heater kW × heater hours + pump kW × pump hours) × about 30.4 days. Electricity cost = kWh × your rate.
Heater hours are the big unknown: they climb in cold weather, with poor insulation or a worn cover, and with higher set temperatures. If you can, measure a week with a plug-in energy meter and use the real number.
Chemicals, water, filters and the purchase price are your inputs, since they vary by tub and region. Tubs that need a 240V circuit also have installation costs this tool doesn't model.
Read next
- Hot Tub Buying GuidePurchase price, electrical needs, running costs, base requirements and the questions to ask a dealer — everything to know before buying a hot tub.
- Best Inflatable Hot TubsInflatable hot tubs are the cheapest way to start soaking at home. Here's how Lay-Z-Spa, Intex, Coleman and MSpa compare — and the trade-offs to know first.