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.
Plunge All-In Gen 2 Review: Specs, Installation and Ownership Tradeoffs
A source-based review of the Plunge All-In Gen 2 without pretending to have tested it hands-on.
Plunge Standard Chiller vs Pro Chiller: Is the Faster Cooling Worth It?
Compare Plunge Standard and Pro chiller behavior using current Plunge Air cooling-rate, size, temperature and electrical information.
Plunge Air vs Plunge All-In: Portable Tub vs Integrated System
Compare Plunge Air and Plunge All-In by filled weight, cooling workflow, portability, setup, floor load, serviceability and who each system fits.
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.
Cold Plunge Setup for Hot Climates
How to plan a cold plunge for high ambient temperatures without relying on marketing claims.
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.