Oil Boilers – 0800 228 9574

Oil Boilers

There are an estimated four million homes not connected to the UK’s national gas grid. Instead they rely on heating their homes by either Oil, LPG (liquid petroleum gas), Electrical or renewable sources. Oil-powered central heating systems with oil boilers are a key alternate way of heating your home.

An oil central heating system works in a similar way to gas powered central heating. Instead you use an oil-fired boiler to heat water, which provides the central heating via radiators and hot water through the taps in your home. The main difference between the two is that will you have your oil supply delivered to your home and stored in an oil tank.

We can arrange for one of our Oftec oil engineers to visit your home to provide a no obligation quote for a new oil boiler. Then, we can assess your current oil central heating system and discuss your oil boiler needs. We will then send you a full detailed quote for you to consider.

Our engineers can supply and install all makes of oil boilers. We are Grant “G -ONE” installers and also Worcester Bosch accredited Platinum Installers.

Being FCA regulated (Financial Conduct Authority) means we are able to offer 0% and interest bearing finance on Worcester Bosch Oil Boiler installations through Hitachi Capital (UK) Plc.  All finance is subject to status.

G One | Worcester Accredited


You should always choose a professional heating company registered with the Oftec (Oil Firing Technical Association) to install oil boiler and heating systems. Prestige Services register with Oftec and have qualified oil heating engineers.

Our Oftec company registration number is 100103.

Why are new Oil Boilers more efficient?

Modern oil boilers are more efficient for a number of reasons. Their main advantage is that they are all now condensing boilers. All well-maintained oil boilers burn their fuel very efficiently. They lose some heat in the hot gases that escape up the flue. A condensing oil boiler has a larger heat exchanger so it recovers more heat and sends cooler gases up the flue which makes it more efficient.

What are the different types of oil boilers?

Since April 2007 it has been mandatory to install condensing oil boilers to comply with Building Regulations. The modern oil-fired boilers can be highly efficient.

Regular/Conventional Oil Boilers

If you have an older boiler, the chances are that you will have a regular boiler known as ‘conventional’ boiler.

Regular boilers heat your central heating system and also produce your hot water which sits in your hot water cylinder. This is normally situated in an Airing Cupboard.

A regular boiler system incorporates a boiler, external controls, and a hot water cylinder. The hot water cylinder is often fed by a cold water storage tank and a feed and expansion tank. All of which are generally located in the loft.

Oil Combi Boilers

Oil-fired combi boilers are also available, providing hot water on demand without the need for a hot water tank. It is fair to say that they are a bit slower to provide hot water than some gas combi boilers. They are not always recommended for larger families who use a lot of hot water.

An oil central heating system will have the same controls as a modern gas central heating system:

  • A Room thermostat. This should be located in a living room, not the hallway.
  • Thermostat Radiator Valves (TRV) on all but one of the radiators.
  • A 7-day timer which can program hot water and room heating.
  • A Cylinder thermostat on the hot water tank.

System Oil Boilers

A system oil boiler directly heats your central heating system and produces hot water for your cylinder. Just like a regular boiler, a system boiler also works on the principle of stored hot water in the hot water cylinder. However, a system oil boiler differs from a regular oil boiler in some important areas.

  • The hot water is pumped from the system boiler through the central heating system to the radiators and hot water cylinder. This results in a fast response and more economical running costs.
  • The system boiler removes the need for a feed and expansion tank in the loft.
  • The main individual components of the heating and hot water system are built into a system boiler which means that installation is quicker, easier and neater.

What type of oil should I have?

Almost all UK domestic central heating systems use 28sec oil – also known as kerosene. This fuel burns more cleanly than heavier oil products such as gas oil – also known as 35sec heating oil. You can also use 28sec oil in kitchen ranges such as AGA cookers.

As the sulphur content of oil has fallen, some domestic oil suppliers have added additional lubricants to kerosene to enable fuel to pump to the boiler more easily. This is not necessary for most systems, as modern pumps have been engineered to operate effectively with low-sulphur fuels but if you are unsure if you would benefit from using such fuels, speak to your equipment supplier.

How often will I need my Oil boiler serviced?

For safety and to minimise fuel costs, you should arrange for a Prestige oil engineer to service your boiler once a year.

What is an Oil boiler service?

When servicing an Oil boiler, our Oftec registered oil heating engineers will carry out the following:

  • Fully inspect each appliance.
  • Clean the parts as required by the manufacturer’s instructions of each appliance.
  • Replace components parts as required.

If regular servicing is not undertaken long term damage can occur. During the combustion process, deposits will build up on the internal surfaces of the heat exchanger and the baffles which can decrease boiler efficiency. If left for a number of years, these deposits harden and with some designs of heat exchanger render it impossible to remove the baffles without destroying them. A replacement baffle will come at a significant cost on top of the routine service charge.

Oil Boiler Repairs

We at Prestige Services have professional Oftec heating engineers, experienced in oil boiler repairs and maintenance.

If your oil boiler breaks down leaving you suddenly without heat and hot water, our heating engineers can repair most oil boilers.

Our oil heating engineers will assess and diagnose the boiler fault and discuss their findings with you. If the problem can be rectified there and then the engineer will do so. If a replacement part is required, we will provide you with a quote to include the cost of parts and labour to repair the boiler.

We will always look for the most affordable solution for the problem. However, if the parts for your particular oil boiler are no longer available or it will not be cost effective for you to have the repairs carried out we will advise and provide you with all the relevant information for you to make an informed decision.

The best way to keep your oil boiler in full and safe working order is to make sure that you have it serviced once a year. This will help to prevent boiler failures especially during the winter months when you rely on your central heating system. Worcester Bosch and all major boiler manufacturers recommend having an annual boiler service.

A way to maintain your existing central heating system and make it more efficient is by Power flushing, chemical cleansing, installing an In-Line Descaler, installing a system filter and having an annual oil boiler service. These are effective ways to keep fuel costs lower.

Oil Tank Checks

There are also for some simple checks you can take yourself to make sure your tank is in a good condition:

  • Check for signs of damage such as bulges or dents, deep scratches, cracks, discolouration or rust.
  • Look out for any oil that is leaking or has leaked out externally, particularly around valves, pipes or seams.
  • Make sure that any external protection isn’t filled with large amounts of water, oil, rubbish or plants.
  • Keep access to and around the tank completely clear and make sure plants do not grow near it.
  • Make sure you close and protect vents, gauges and access points so that rainwater, insects or dirt cannot get into them.
  • Check gauges and alarms are working correctly, and in particular the batteries. Consult the manufacturer for advice on how to do this.
  • Make sure your tank is only filled to around 80-90% of its capacity. This avoids overfilling and makes sure your tank has an overfill protection device or alarm.

The OFTEC website is http://www.oftec.co.uk/

If you have any questions or require any help with any aspect of your oil boiler, please do give Leisa or a member of the team a call on 0800 228 9574. You can also email us on info@prestigeservices.biz and we will be happy to help you.

We are here to be of help for all your Oil boiler requirements.

Oil Boiler - Prestige Services
A Worcester Bosch Oil Boiler installed by us.