Heating

Electricity Cost Calculator:
Hot Tub

Hot tubs are notorious energy consumers, with inflatable models using 1500W heaters and permanent tubs using 3000-7500W. The real cost isn't heating water once - it's maintaining 104°F 24/7, which costs $30-100/month depending on model efficiency, insulation quality, and outdoor temperature.

Calculate Running Costs

Adjust the settings below to see real-time cost estimates for your Hot Tub

Check your device label or manual for wattage

Default: $0.16/kWh (America average)

💡 Your Estimated Costs

Per Hour
$0.24
Per Day
$1.92
Per Month
$57.60
Per Year
$700.80
Energy Consumption: 12.00 kWh/day · 360.00 kWh/month · 4380.00 kWh/year

⚠️ These are estimates based on continuous usage at the specified wattage. Actual costs may vary based on usage patterns, thermostat cycling, and local electricity rates.

📊 Quick Reference Table

Average running costs for a 1500W Hot Tub at $0.16/kWh (US average)

Usage Energy (kWh) Cost (USD)
1 Hour 1.50 $0.240
8 Hours/Day 12.00 $1.92
Per Month (30 days) 360.00 $57.60
Per Year (365 days) 4380.00 $700.80

* Based on 8 hours daily usage. Use the calculator above for your specific usage pattern.

💡 3 Ways to Reduce Energy Costs

1

Use an insulated cover religiously - heat loss through the water surface accounts for 50-70% of energy waste, a quality cover cuts costs by 30-40%

2

Lower the temperature by 5°F when not in use for 2+ days - each degree saves 3% on heating costs without long reheating times

3

Run filtration cycles during off-peak electricity hours if you have time-of-use rates - saves 20-40% on pumping costs

Frequently Asked Questions

How much does it cost to run a hot tub per month?

Inflatable hot tubs (Lay-Z-Spa): $40-80/month in summer, $80-150/month in winter. Permanent insulated hot tubs: $25-60/month summer, $50-100/month winter (at $0.16/kWh). Outdoor temperature is the biggest factor - each 10°F colder outside costs approximately 15-20% more to maintain 104°F water.

Is it cheaper to leave a hot tub on all the time or heat it when needed?

For well-insulated permanent hot tubs, leaving it on costs less - heating from cold uses more energy than maintaining temperature. However, for inflatable tubs with poor insulation, if you only use it weekly, heating on-demand is cheaper. Break-even is typically 3-4 uses per week.