The Baxi 4.5kW Electrical Back-Up Heater is an electric heating unit designed to provide additional warmth in conjunction with an existing heating system. With a power output of 4.5kW, it offers enhanced heating capacity, making it ideal for supplementing primary heating during colder months or when extra heat is needed in specific areas of a home or building. The unit is efficient and easy to install, ensuring reliable warmth in spaces that require supplemental heating, helping to maintain comfort and consistent temperature levels.