Say goodbye to the hardship of manually mixing your incoming water supplies to find the perfect temperature. Acquaint yourself with one of Affine's beautifully designed thermostatic mixer showers and enjoy perfect showering every time. CE Approved Includes a FREE 5-year guarantee, excludes the cartridge and shower hose, which are covered for 12 months. Maintains Constant Temperature In All Conditions Standard showers can have hot temperature spikes when others in the house turn on taps or flush the toilet. Thermostatic control means that this shower will hold its temperature steady at all times. It dynamically adjusts the mix of hot and cold water offsetting the everyday changes in water pressure experienced in most family homes. Option 1 Video: [isdntekvideo] Option.