Chiller Cooldown-Time Calculator
Estimate theoretical cooling load and a practical cooldown range.
Cold-plunge equipment, engineered
Buy the right system for your space, climate and operating cost.
We compare tubs and chillers by capacity, cooldown performance, insulation, electrical requirements, filled weight, sanitation architecture and ownership cost—not vague wellness marketing.
Launch database5 models
Current manufacturer-source-backed capacity, weight, dimensions and system architecture.
Useful before you buy
Tools built around the actual bottlenecks
Cold Plunge Electricity-Cost Calculator
Estimate monthly chiller energy cost from watts, duty cycle and electricity rate.
Ice vs Chiller Break-Even Calculator
Compare recurring ice spend with chiller ownership cost.
Cold Plunge Filled-Weight Calculator
Estimate water, tub and user load before placement.
Technical buying guides
Start with load, space and operating constraints
Cold Plunge Chiller for a 100-Gallon Tub: What Size Actually Matters?
A sizing framework for 100-gallon cold-plunge tubs based on heat load, insulation, ambient temperature and desired cooldown time.
1/3 HP vs 1/2 HP Cold Plunge Chiller
How to compare 1/3 HP and 1/2 HP chillers without treating horsepower as a complete performance spec.
1/2 HP vs 1 HP Cold Plunge Chiller
When the jump to a 1 HP chiller is worth the extra cost and electrical load.
How Long Does It Take to Cool 100 Gallons From 70°F to 45°F?
A practical cooldown-time framework for a 25°F temperature drop in a 100-gallon cold plunge.
Cold Plunge Chiller Electricity Cost: Monthly Calculator and Buying Guide
Estimate monthly electricity cost from power draw, duty cycle and electricity rate.
Ice vs Chiller Cost for a Cold Plunge: Where Is the Break-Even?
Compare recurring bagged-ice spending with chiller purchase and electricity costs.
Why this site exists
Cold plunges are equipment systems, not just tubs.
Cooling load
Water volume, ambient temperature, insulation and target temperature determine the real work a chiller must do.
Installation
Filled weight, dedicated circuits, drainage, ventilation and service clearance can eliminate products before price matters.
Ownership cost
We model electricity, ice, filters, sanitation and replacement components instead of comparing sticker price alone.