Pool & Hot Tub Energy Calculator
Calculate the energy costs for your swimming pool pump, heater, and hot tub. Get personalized savings recommendations for variable-speed pumps, solar covers, and heat pump heaters.
Swimming Pool
Average pool: 15,000-25,000 gal
6-12 hours typical
Pool Heating
Hot Tub / Spa
Energy Rates
Pool Energy
Pools can add $50-300+ monthly to your energy bill. The pump is the biggest continuous draw, while heating (if used) is the most energy-intensive operation.
- • Pool pumps: 1,500-3,000+ kWh/year
- • Pool heating: varies widely by climate
- • Hot tubs: 2,500-4,000 kWh/year typical
How to Use
- Enter your pool size, pump type, and daily run time
- Add heating details if you heat your pool
- Check the hot tub box if you have one
- Enter your electricity rate and click Calculate
FAQ
Is a variable-speed pump worth it?
Usually yes. Variable-speed pumps cost $800-1,500 more but save 50-70% on pump energy. Most pay for themselves in 1-3 years and are now required by code in many states.
How long should I run my pool pump?
You need to turn over all pool water through the filter once per day. For most pools, this means 6-8 hours with a properly sized pump. Variable-speed pumps can run longer at lower speeds, which is more efficient and quieter.
What's the cheapest way to heat a pool?
Solar covers (free heating from sunlight) combined with a heat pump is the most economical. Heat pumps are 5-6x more efficient than gas or electric resistance heaters. A solar cover alone can raise water temp 10-15°F and cut heating costs 50-70%.