Goods available for immediate collection from our harrow branch, local plumbing and heating supplies, 52 station road, North Harrow, Ha27se Tel - 0208 863 1010 This thermistor is the ideal clip on component for your 18mm pipe water heater. It features a thermostat to ensure precise temperature control and is compatible with Ideal brand storage tank water heaters. This product is perfect for those in need of a reliable and efficient water heater. It is easy to install and provides a safe and durable option for your hot water needs.