Ice Bath Cost Calculator
Bagged ice feels cheap until you do it three times a week through a summer. Enter your habit and local ice price — get your real monthly spend and the month a chiller would pay for itself.
Rule of thumb: 4–8 bags to bring a 100-gallon tub to ~50°F; more in summer.
Standalone chillers run ~$800–2,500; all-in-one tubs ~$3,500–6,000.
Chiller math includes ~$20/month estimated electricity for maintaining a covered, insulated tub. Your rates and climate will shift this — treat the breakeven as a planning number.
The honest takeaway
Under 2 sessions a week, ice wins and it isn't close — buy the $100 tub, prove the habit, keep your money. At 3+ sessions a week, the spreadsheet flips fast: most people land at a 6–18 month breakeven, and that's before pricing the friction of hauling bags (which is what actually kills cold habits). Frequency first, hardware second.
Frequently asked questions
How much ice does an ice bath take?
To pull a 100-gallon tub from tap temperature (~65°F) down to 50°F takes roughly 40–80 lbs of ice depending on starting temp and weather — about 4–8 standard 10 lb bags. Colder targets or summer tap water can double that.
Is a cold plunge chiller worth it?
It depends entirely on frequency. At 3+ sessions a week, $15–25/week of ice usually overtakes a chiller's amortized cost within 12–24 months — before counting the time spent on ice runs. At 1 session a week, ice stays cheaper for years.
How much electricity does a cold plunge chiller use?
A typical 1/2 HP chiller maintaining a covered, insulated tub uses roughly 3–6 kWh/day depending on ambient temperature — about $15–30/month at average US rates.
Ready to compare always-cold options? Our cold plunge rankings cover the full range — and the cost guide breaks down every tier.