Worcester Greenstar 4000 12kW System Boiler 7733600377

This product offers high-end design, quiet operation, and wide modulation range for efficient heating. It provides flexibility in siting due to long flue lengths and includes a 10-year heat exchanger warranty and a 7-year product guarantee.

• The description claims the product has a wide modulation range designed to optimise efficiency when heating demand is low.
• The description claims the product operates quietly (up to 42dB(A)).
• The description claims the product provides flexibility in siting due to long flue lengths (up to 12m with 60/100mm flues).
• The description claims the product includes a 10-year heat exchanger warranty and a 7-year product guarantee.