Hansgrohe 88586000 TB-2 Thermostatic Cartridge

Refresh Hansgrohe 88586000 TB-2 ThermoBalance II Thermostatic Cartridge

Restore precise, consistent shower temperatures with the Hansgrohe 88586000 TB-2 thermostatic cartridge—engineered for ThermoBalance II valves. This genuine cartridge lets your valve regulate temperature accurately and includes an adjustable high-temperature limit stop to help meet code and reduce scald risk. It is the direct service part for ThermoBalance II systems and installs following Hansgrohe’s service steps. Use it to bring aging showers back to smooth, reliable performance without opening the wall.

• Brand: Hansgrohe
• MPN: 88586000 (TB-2)
• Type: Thermostatic Cartridge for ThermoBalance II Tub/Shower Valves
• Size/Capacity: For ThermoBalance II two-function valves (system flow rating up to 8 GPM @ ~44–45 psi)
• Material/Finish: Not specified (see service manual)
• Performance: Thermostatic control with adjustable high-temperature limit stop per Hansgrohe service instructions
• Connections/Fit: Fits ThermoBalance II rough-in valves 06623000 (without stops) and 06627000 (with stops); for use with ThermoBalance II trims. Not for iBox or ThermoBalance I/III valves.
• Dimensions: Cartridge inserts into existing rough body (layout-dependent; see manual)
• Included: Thermostatic cartridge assembly (follow service booklet; remove old blue sealing gasket from rough before installing)
• Certifications: When installed in a ThermoBalance II valve: ASME A112.18.1 / CSA B125.1; IAPMO listed; UL listed (see valve listing)
• Warranty: Hansgrohe Limited Lifetime consumer warranty; 1-year commercial (USA/Canada)

Restore Stable, Safe Temperatures

The TB-2 cartridge maintains set temperature as pressures fluctuate, helping eliminate sudden hot/cold swings. After installation you can set the integrated high-temperature limit stop to meet local code and reduce scald risk—Hansgrohe specifies a maximum shower outlet of 120 °F (112 °F in MA).

Designed for ThermoBalance II Roughs

This is the factory cartridge for ThermoBalance II systems and services rough-in valves 06623000 (no stops) and 06627000 (with stops). It is not compatible with Hansgrohe iBox Universal Plus or other series; ThermoBalance I and III use different cartridges (TB-1 88585000 / TB-3 88500000). Verify your rough before ordering.

Quick, Guided Replacement

Hansgrohe’s service booklet shows the TB-2 change-out step by step. A key callout: remove the old blue sealing gasket from the rough body before installing the new cartridge to avoid damage, then tighten the screws in the numbered sequence.

Built for Two-Function Showers

ThermoBalance II valves supply two separate outlets and are rated up to ~8 GPM at ~44–45 psi, giving plenty of capacity for a showerhead plus handshower. Per Hansgrohe, do not use this valve with a diverter tub spout. The TB-2 restores the valve’s original thermostatic performance.

Confidence in Code & Compliance

While the cartridge itself is a service part, the complete ThermoBalance II valve assembly carries third-party compliance—ASME A112.18.1/CSA B125.1, IAPMO listing, and UL listed—when installed per instructions. Using genuine TB-2 parts helps keep that compliance path intact.

Backed by Hansgrohe Warranty

Hansgrohe backs its consumer installations with a Limited Lifetime warranty (1-year for commercial), available on purchases from authorized sellers. The service page also provides tech tips and support if you need a hand during replacement.