Complete cold plunge system
Thermal and hydraulic architecture.
1Define the vessel
Volume, insulation, ports and environment.
2Size cooling
BTU, target, climate and cooldown.
3Protect flow
Pump curve, filtration and plumbing.
4Commission & maintain
Prove performance and keep the baseline.
Start here
Ice bath knowledge hub
Chiller, filtration, setup, DIY and cost.
DIY cold plunge build
Long-form start-to-finish guide.
Cooling & equipment
Chiller sizing
BTU, heat load and low-temperature uncertainty.
Best-fit chiller comparison
Compare supported technical data.
Why HP is misleading
Use comparable cooling data.
Pump sizing
Operating point, not zero-head GPH.
Filtration
Filter without starving the chiller.
Chiller + filter compatibility
Minimum-flow gate under restriction.
Build & plumbing
Plumbing diagram
Pump → filter → chiller → return with valves.
Plumbing guide
Diameter, fittings and head loss.
Commissioning
Leak test, prove flow, log cooldown.
Insulation & covers
Reduce holding load.
Indoor vs outdoor
Solar, ambient and equipment rating.
Tub guide
Vessel types, ports and insulation.
Operate & troubleshoot
Maintenance
Keep flow and cooling near baseline.
Troubleshooting
Separate hydraulic from thermal faults.
Water care
General education without unsupported sanitation claims.
Operating cost
Use measured kWh and duty cycle.
Build + 5-year cost
Editable system budget planner.
Buying checklist
Buy in dependency order.