Boilers: Compare features & prices Worcester Greenstar Heatslave External 12-18 review

The Greenstar Heatslave External oil-fired combi boiler from Worcester Bosch comes in an insulated, weather-proof cabinet that's designed to withstand the elements. This allows the boiler to be situated outdoors, which could be ideal if you have limited space in your kitchen or utility room. They have the benefit of a pre-heated thermal store to provide instant hot water at a higher flow rate than a gas combi. Read our full review to find out whether the Heatslave External 12/18 is the right boiler for your home.
Sign up to access the full review

  • Reviews of 231 boilers: combination, system and heat-only.
  • 40 Best Buy boilers from reliable brands that please their customers
  • Reviews of boilers from 9 companies.

Existing subscribers login now

Worcester Greenstar Heatslave External 12-18

  • Type: Oil
  • Which? score: Subscribe
Typical price
£1,830.00
What is this?
Specification
Type of boiler Combi
Fuel type Oil
Heat output band (kW) 12-18
View full specification

Which? works for you