Hot Tub Cost Calculator

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Inflatable portable spas start around $300-800. Entry-level acrylic models run $3,000-6,000. Mid-range plug-and-play or 240V models cost $6,000-12,000. Premium hot tubs can exceed $20,000.
USD
Includes electrical work ($500-2,500), site preparation ($300-3,000), delivery and crane if needed ($200-800), and permits ($50-500). Inflatable spas have near-zero installation cost.
USD
120V plug-and-play spas use a 1,500 W heater. Most 240V models use 4,000-6,000 W heaters that heat faster and hold temperature more efficiently.
Typical single-speed pumps draw about 1,500 W. Variable-speed or dual-pump systems can draw 2,000-4,000 W total when jets are running.
W
How many hours per day you actually run the jets. The heater also runs at idle to maintain temperature; that idle heating fraction is estimated automatically.
hrs/day
The US national average is about $0.16/kWh as of 2025. Check your utility bill for your exact rate; Hawaii averages $0.36/kWh while Louisiana averages $0.09/kWh.
USD/kWh
Colder climates force the heater to work much harder to maintain your set temperature. This multiplier adjusts idle heating electricity accordingly.
Most hot tubs are set to 100-104 F (38-40 C). Higher temperatures mean more heat loss and more electricity used to maintain temperature.
F
Bottled chlorine or bromine chemicals typically cost $20-50/month. Salt-water or ozone systems may reduce chemical costs over time.
USD/mo
Most hot tubs need a full water change every 3-4 months. At $0.005/gallon average, a 400-gallon tub costs about $2-6 per refill. Enter your estimated monthly average.
USD/mo
Filters should be replaced 1-2 times per year at $30-150 each depending on tub size. Enter your estimated annual total.
USD/yr
Annual service visits, cover treatments, jet cleaning, and minor parts. Budget $200-500/year for most owners.
USD/yr
Average repair costs run $200-800/year factoring in pump replacements, heater elements, jets, and control boards. New tubs under warranty have lower short-term risk.
USD/yr
Hot tub covers cost $300-600 and last 5-7 years. Cover lifters, steps, and headrests add to the total. Enter an amortized annual figure (e.g., $400 cover over 5 years = $80/yr).
USD/yr
Most hot tubs last 10-20 years. 10 years is a common benchmark for comparing total cost of ownership between models.
years
Currency
Total monthly running costHigh running cost
$217

All recurring costs combined per month

Monthly electricity$111
Monthly water care$48
Monthly maintenance & repairs$58
Annual running cost$2,608
Total cost of ownership$35,580
Cost per soak$7.14

Your hot tub will cost about $217 per month to run.

  • Your running costs total about $2,608 per year - that is $217 per month on average.
  • Electricity accounts for roughly 51% of your monthly running cost. Better insulation and a good-quality cover reduce this figure significantly.
  • The purchase and installation cost of $9,500 brings your total 10-year cost of ownership to about $35,580.
  • Electricity is your biggest ongoing expense. Running the tub at a slightly lower temperature (even 1-2 degrees) and keeping the cover on when not in use can cut the heating bill by 10-30%.

Next stepCompare models by entering different purchase prices and heater wattages to see how a more efficient tub pays back over time.

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