How we're operating during the COVID-19 pandemic

Find out more How we’re operating during COVID-19
  • Get the best quotes, fast!
  • Over 5,000 engineers across the UK
  • Gas Safe registered engineers

Need a New Boiler?

Get FREE no-obligation quotes now!

  • No delays! Get quotes today
  • Compare quotes & get the best prices
  • Gas Safe & OFTEC registered engineers
 4.8 stars

1,334 reviews

 4.8 stars

1,334 reviews

Worcester Bosch Greenstar Danesmoor External 18/25 Regular Oil Boiler

Worcester Bosch Greenstar Danesmoor External 18/25 Regular Oil Boiler Boiler
Typical Price (inc VAT)
£1,880
Typical installation Cost (inc VAT)*
£1000 - £1500
Sundries (Filter, Flue, etc)
£300
Total Cost
£3,180 - £3,680

Get a quote to install this boiler

Need a repair instead? Get a repair quote
Make Worcester Bosch
Model Greenstar Danesmoor External 18/25 Regular Oil Boiler
Is Condensing Condensing
Efficiency Rating 90%
Band Rating A Rating
LPG Compatible No
Standard Warranty 2 Years
Central Heating Max. Output 25 kW
Mounting Floor Standing
Flow Rate N/A
Typical Price (inc VAT) £1,880
Typical installation Cost (inc VAT)* £1000 - £1500
Sundries (Filter, Flue, etc) £300
Total Cost £3,180 - £3,680
ERP Rating A Heat

* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.

Get a quote to install this boiler

Need a repair instead? Get a repair quote
Product Description


Worcester Bosch Greenstar Danesmoor External 18/25 Regular Oil Boiler

The Greenstar Danesmoor External 18/25, manufactured by Worcester Bosch, is an oil-fired regular boiler designed for installation in an outdoor area.

How efficient is the Greenstar Danesmoor External 18/25?
This is a highly efficient regular boiler that could help to lower your energy bills, as shown by the efficiency rating of 90% and ErP A-rating for heat.

Is a 25 kW output rating suitable for my home?

A regular boiler with an output rating of 25 kW is perfectly suited to medium-sized properties with 1-2 bathrooms and around 10-15 radiators.

Does the Greenstar Danesmoor External range include any other output ratings?

Greenstar Danesmoor External boilers are available as combi, system and regular outputs for either internal or external installations.

In addition to this 25 kW model, a higher output of 18 kW and smaller output of 18 kW are also available. So no matter your property type, there’s likely to be a boiler for your heating demands in this range.

Is a regular boiler suitable for my home?

Regular boilers should be installed into properties with an open vent heating system. Systems with a regular boiler heat water that’s supplied via a cold water tank in the loft (rather than directly from the mains) to then be stored in a hot water cylinder.

How long is the warranty?

The Danesmoor External 18/25 features a 2 year warranty as standard but this can be extended to 5 years when certain terms are met.

What are the key features of the Danesmoor External 18/25?

Danesmoor External boilers have the same features as the internal model, which means they have concealed controls and are compatible with Greenskies solar panels and Greenstore hot water cylinders. As an external boiler, protection from the elements is vital. And thanks to the green powder coat cabinet, it will be protected and fit in with the surroundings in your garden.

How big is the Greenstar Danesmoor External 18/25?

An external boiler is a great option for homes without much space inside. Dimensions of 950 x 565 x 780mm (HxWxD) make it compact so it won’t take up too much space in your garden.

Get a quote to install this boiler

Need a repair instead? Get a repair quote

Get a quote to install this boiler

Need a repair instead? Get a repair quote

Need a new boiler?

Get FREE no-obligation quotes now!

Excellent 4.8 out of 5

Find approved boiler engineers
in your area.

Begin your search by entering your postcode below.

Or select your region from the list and start your search