Greenstar 4000 15kW System Boiler

Greenstar 4000 15kW System Boiler

Built on all the tried, tested and much-loved features of the Greenstar i, the Greenstar 4000 is instantly familiar and yet totally transformed in appearance, performance and installer plus points.

With outputs of 12kW to 24kW, we’ve raised the bar with the speed and ease of installation, commissioning and servicing.

Encompassing features from our range-topping 8000 Style, informed by insights from installers and featuring real advances in siting flexibility, it takes what was the nations’ favourite boiler and makes it even better.

Our entire gas boiler range is able to run on a 20% hydrogen blend – so your customer can be confident it will run on gas for it’s lifetime.

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  • 100% planet friendly packaging
  • Front access to all key components
  • Longer flue lengths up to 12m (60/100)
  • Intuitive full-colour long-text display
  • 500ml condensate siphon
  • Quiet operation from 42dB(A)
  • Modulates down to 1.9kW central heating output