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How to make your oil boiler more efficient

Oil boilers running at their best means you're getting the most for your money, especially at a time when heating costs are rising.

Written by
Camilla George
on 12 Dec 2022
and updated on
16 Jan 2023
Categorised in
Tips and Advice

Keeping your boiler efficient not only save you more but also can reduce the chances of a boiler breakdown. We have some very simple steps you can take to make sure your boiler is running at maximum efficiency. 

Get your boiler serviced

It’s important to have an annual boiler service by an OFTEC qualified engineer to make sure your boiler is safe. The engineer will check if any parts need replacing and make sure that your boiler has the correct mix of air and fuel. 

A well-serviced oil boiler will be up to 10% more efficient.  

Use heating oil additives

Heating oil additives help to reduce deposits on nozzles and heat exchangers within your boiler that reduce the thermal efficiency of the boiler.

Maintenance for your oil boiler

Maintenance is key to keeping your boiler running efficiently. Here are some simple steps we suggest you do to  help maintain your oil boiler:

  • Check for sooty or black marks around the boiler
    Soot or black marks could indicate fuel in your boiler is not burning properly, this can reduce efficiency. It may also mean that your boiler may be emitting harmful gases, so it’s important to get your boiler checked by a qualified engineer.
  • Check vents and flues for blockages
    Poor ventilation will affect the combustion process which can reduce the efficiency of your oil boiler.
  • Flush your boiler water often and use a de-scaler
    This will ensure your boiler runs in tip-top condition. Flushing or using a descaler will make sure your boiler isn’t working overtime heating up clogged radiators.
  • Bleed your radiators
    Bleeding your radiators makes sure your boiler isn’t working harder than necessary in the winter months when the central heating is on.

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