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Overview
- Heating outputs from 12 to 18kW
- Highly efficient and extremely quiet in operation
- A rated boiler (SEDBUK 2005 value)
- Central heating outputs of 12 to 18kW, 18 to 25 kW and 25 to 32kW
Technical specification
ERP Rating
A
Boiler Type
Heat Only
Depth
633 mm
Height
895 mm
Width
386 mm
Maximum Horizontal Flue 125mm
6 m
Maximum Vertical Flue 125mm
8 m
External or Internal
Internal
SEDBUK SAP 2009 Rating
A
SEDBUK SAP 2005 Rating
A
CH Condensing Max Output
18 kW
Heat Output
18 kW
Fuel Type
Oil
Noise Level
56dB
Solar Compatible
Y
Type
Oil Boiler
Years Guaranteed
2
Registered with the Energy Savings Trust
Y
Made To Order
N
Manufacturer Model No
7731600147
Brand Name
Worcester Bosch
Reviews
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Greenstar Heatslave II Ext 18/25 2022+
The Greenstar Heatslave II series is the UK’s most popular external oil-fired combi boiler. With a range of models available, making it suitable for small, medium and large sized properties, the boiler features a robust IP45 weatherproof cabinet to protect from the weather and a one piece stainless steel primary baffle for rapid servicing and maintenance.
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Grant Vortex Pro 21kw Combi External Oil Boiler Includes Flue
The Grant Vortex Pro outdoor combination oil boiler features internal frost protection, a 24 litre expansion vessel, neon diagnostic indicators and a factory-fitted condensate trap, together with the conveniently factory-fitted, multi-directional flue - and all of this has been designed to make installation and servicing easier. With larger than normal heat exchangers, the hot water performance of this high-efficiency combi boiler is vastly increased. The two very accurate electronic temperature controls allow the boiler to operate in condensing mode on central heating and instant hot water production can be maintained.
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Grant Vortex Eco Outdoor 16-21kW Heat Only Wall Hung Oil Boiler
The quiet Vortex Eco outdoor wall mountable oil boiler from Grant features the benefits you would expect from the Vortex heat exchanger range, such as providing some of the highest efficiencies on the market. It also includes a factory fitted low level flue, a robust external powder-coated painted case, a mains isolating switch and a test switch.
£3,095.93 each (Inc. VAT)
Grant Vortex Pro 36kW Combi Oil Boiler Oil ErP
The latest Grant Vortex Pro internal combination oil boiler features a 24 litre expansion vessel, neon diagnostic indicators and a factory-fitted condensate trap - all designed to make installation and servicing easier. With larger than normal plate heat exchangers, the hot water performance of this high-efficiency combi boiler is vastly increased. The two very accurate electronic temperature controls allow the boiler to operate in condensing mode on central heating and instant hot water production can be maintained. In addition, a low system pressure cut off switch protects the combi boiler in the event of system water loss.
£4,110.72 each (Inc. VAT)