The Worcester 87161066860 Heat Exchanger Plate Set is a compact storage tank water heater designed for indoor use. Made in the United Kingdom, this boiler-based heating system has an energy efficiency rating of A+++. With a tank capacity ranging from 75-150 litres, this water heater offers a first hour recovery rate of 204 litres per hour. The set includes seals, screws, and clips, and is backed by a 1-year manufacturer warranty, making it a reliable choice for home heating needs. With a power consumption of less than 100W and a voltage of 220/240V, this water heater is a practical and efficient option for any household.