Worcester Oil Boilers

Worcester Oil boilers are both convenient and practical options for homes that are not connected to the main gas supply.

Worcester Bosch has 30 oil-fired boilers in its current range to suit different home sizes. This includes inside and outside installation sites.

Worcester oil-fired heat only boilers can operate alongside Worcester solar installations. You can choose to install oil-fired boilers under a kitchen worktop or fit it on the wall. The company has an extensive range of both internal and external oil boilers suitable for different types of properties.

Worcester Oil Combi Boilers

Most Oil combi boilers are larger than gas or LPG boilers with a majority being floor standing. Worcester Bosch is the pioneer of the combi boiler in the UK, with the Greenstar range the most popular of the lot.

Worcester Bosch combi boiler is a combination of a high-efficiency water (A-rated) heater, and a central heating boiler in one single unit. They’re cheaper to run and energy efficient as the water heats up instantly instead of pre-heating, then storing in a cylinder.

Greenstar combis are engineered to perform and operate efficiently. They have a ‘keep hot’ device that ensures hot water is instant whenever it’s needed.

This boiler type integrates a unique ‘ECO’ mode button which overrides the ‘keep hot’ ability. In the process, less gas is used as energy is only utilized when you need hot water.


  • It’s compact size makes it ideal for small homes
  • Suitable for properties with little or no loft
  • The lack of a hot water cylinder increases living space
  • Reduced risk of loft pipework freezing
  • Less pipework involved makes installation cheaper

Worcester External Oil Combi Boiler

An external oil-fired combi boiler is perfect for a home that is too small for an indoor oil fired boiler. It’s the best boiler type if it’s not workable to have an internal boiler.

The encased, insulated, and weather-proof cabinet allows for external fitting. In case of extreme cold, a built-in frost thermostat adds protection throughout winter.

You can install a Worcester External Oil combi boiler on the floor or on the wall.


  • They save on space and can fit well in the kitchen
  • Ideal for smaller properties

Worcester Oil Fired External Combi Oil Boiler

Apart from using oil for fuel rather than gas, this boiler type is same as the gas fired boiler. As they’re not connected to a gas network, it means ordering a tank of oil from a supplier. You’ll need a storage tank for refilling, with a connection to the boiler which automatically feeds it fuel.


  • More space indoors
  • Less noise as some boilers are noisy when running
  • No risk of carbon monoxide occurrence
  • Prevents damage to property in case of oil leaks
  • An external boiler is easier to access for servicing
  • More heating for outdoor buildings

Worcester Approved Oil Boiler Installation

You can only buy Worcester boilers through suppliers such as Hassle Free Boilers. This is because Worcester doesn’t sell directly to customers.

In case you have a boiler breakdown during the manufacturer’s guarantee period, contact your installer first to ensure it’s an appliance fault. During this period, Worcester Bosch parent company will cover the repair costs of components that are faulty or defective. But you must register within 30 days to qualify for the guarantee which can be extended by between 3 and 7 years.

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