Refresh Hansgrohe 88500000 ThermoBalance III Thermostatic Cartridge (TBIII)
Bring your ThermoBalance III shower back to steady, precise temperature control. The genuine Hansgrohe 88500000 TBIII cartridge restores smooth thermostatic regulation and includes an adjustable high-temperature limit stop to help reduce scald risk. It’s a direct drop-in service part for ThermoBalance III rough valves, so you can repair from the finished wall—no tile demo. Ideal when you notice temperature drift, sudden swings, or difficulty holding a setpoint.
- Brand: Hansgrohe
- MPN: 88500000 (TBIII)
- Type: Thermostatic cartridge for ThermoBalance III tub/shower valves
- Size/Capacity: For three-function ThermoBalance III systems; system flow depends on trim (many trims list ~6.0 GPM @ 44 psi—see trim spec)
- Material/Finish: Not specified (see service instructions)
- Performance: Thermostatic temperature control with adjustable high-temperature limit stop
- Connections/Fit: Fits ThermoBalance III rough-in valves 06624000 (no stops) and 06628000 (with service stops); not compatible with iBox or ThermoBalance I/II systems
- Dimensions: Inserts into existing rough body; layout-dependent (see manual)
- Included: Thermostatic cartridge assembly (install per Hansgrohe service booklet)
- Certifications: When installed in a ThermoBalance III valve: ASME A112.18.1 / CSA B125.1; IAPMO listed; UL listed (see rough specification)
- Warranty: Hansgrohe Limited Lifetime (consumer); 1-year commercial (USA/Canada)
Restore Stable, Safe Temperatures
The TBIII blends hot and cold to hold your setpoint as household pressures change. After installation, set the built-in high-temperature limit stop to meet local code and reduce scald risk for family and guests.
Engineered For ThermoBalance III Roughs
This cartridge is purpose-built for ThermoBalance III rough-in valves—use it with rough 06624000 (without service stops) or 06628000 (with service stops). Verifying the rough model before ordering avoids misfit and rework.
Three-Function Shower Control
ThermoBalance III valves integrate thermostatic control with a three-way diverter for multi-feature showers. All three outlets must be plumbed (do not plug any outlet), and the valve is not for use with a diverter tub spout—follow the piping diagram for two-feature layouts.
Front-Side Service, No Wall Demo
Replace from the finished side: remove trim, close the stops (if present), align the locator tab with the notch in the rough, and tighten the retainer screws evenly. Finalize by calibrating the safety limit stop and checking for leaks.
Durable, OEM Sealing & Feel
Genuine Hansgrohe seals and tolerances help maintain the valve’s original smooth operation and reduce nuisance drips. With periodic system flushing and clean water supply, the TBIII delivers years of dependable control.
Compliance Path Intact
While the cartridge itself is a service part, the complete ThermoBalance III assembly maintains its ASME/CSA, IAPMO and UL listings when serviced per Hansgrohe’s instructions—supporting inspection and warranty requirements.
Clear Specs, Clear Expectations
System flow is governed by the trim and supply conditions; many ThermoBalance III trims specify around 6.0 GPM at 44 psi. Always consult the trim’s specification sheet and the rough’s instructions for exact limits and piping.
