External Oil Boiler


An external oil boiler is often a convenient choice for smaller homes. They
offer the benefits of an internal system without taking up space.


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External Oil Boiler

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External oil boilers are a great option for many off-grid homes. They mix the efficiency and cost-effectiveness of an oil boiler and the convenience of additional space inside your home.

Below are a range of external oil boilers that we recommend here at Boilerhut. We only work with premium boiler manufacturers. We would never recommend a boiler that we couldn’t install into one of our own homes.

Navien LCB700 Blue Flame External Oil Boiler

Navien LCB700 External Oil Boiler | Boilerhut
  • Sizes: 21kW, 28kW & 36kW
  • Efficiency: 93%
  • Warranty: 10 Years
Read our in-depth review

Grant Vortex Pro External Oil Boiler

Grant Vortex Pro External Oil Boiler
  • Sizes: 15kW - 70kW
  • Efficiency: 92%
  • Warranty: 10 Years
Read our in-depth review

Grant Vortex Pro External Combi Oil Boiler

Grant Vortex Pro External Combi Oil Boiler
  • Sizes: 21kW, 26kW & 36kW
  • Efficiency: 94%
  • Warranty: 10 Years

Worcester Greenstar Heatslave II External Oil Boiler

Worcester Bosch Heatslave II External Oil Boiler
  • Sizes: 18kW, 25kW or 32kW
  • Efficiency: 94%
  • Warranty: 10 Years
Read our in-depth review

Grant Vortex Eco External Oil Boiler

Grant Vortex Eco External Oil Boiler
  • Sizes: 15kW - 35kW
  • Efficiency: 92%
  • Warranty: 5 Years

Grant Vortex Eco Wall-Hung External Oil Boiler

Grant Vortex Eco External Wall Hung Oil Boiler
  • Sizes: 16kW - 21kW
  • Efficiency: 90%
  • Warranty: 5 Years

Firebird Envirogreen Heatpac External Oil Boiler

Firebird Envirogreen Heatpac External Oil Boiler
  • Sizes: 12kW - 73kW
  • Efficiency: A Rated
  • Warranty: 2 Years

Need a new external oil boiler?

If you need a new or replacement external boiler or are looking at having a central heating system installed, get an online quote (it takes less than 1 minute), and you’ll get an instant price. But why choose Boilerhut:


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