The Worcester Bosch DHW thermistor Kit 87161423020 is a high-quality replacement part designed specifically for storage tank water heaters powered by gas. Made in the United Kingdom, this multicoloured kit ensures energy efficiency with an A rating and is suitable for indoor mounting. With a focus on reliability and performance, this product is ideal for those looking to maintain or upgrade their boiler heating system. The EC range of A+++ - D further demonstrates the energy efficiency of this product, making it a practical choice for any home.