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Step by step: How to safely remove tar from a boiler

We will guide you through the entire process in ten steps.


Tools and equipment

You will need security gloves , mask, safety glasses, long sleeves and tools such as scraper, brush and vacuum cleaner.


Switching off and cooling down the boiler

It is important to switch off the boiler and let it cool down completely. This may take several hours. Make sure the boiler is really cold, otherwise you could burn yourself.


Removal of smoke pipe

Remove safely flue pipe from the boiler. If you are not sure how to do this, we recommend contacting an expert in the field of heating.


Tar removal

Start scraping the tar from the inside of the boiler with scrapers. Be careful not to damage any parts of the boiler.


Using an industrial vacuum cleaner

Use after removing most of the tar industrial vacuum cleaner to remove the remaining residue.


Cleaning with a brush

Finally, to complete the cleaning, use brush to remove any small tar residues that may remain on the boiler wall.


Check and reinstall

After thorough cleaning, check the boiler for any damage and reinstall smoke pipe.


Security precautions

During the entire process, it is important to follow all safety precautions and if you have any doubts, it is better to contact a boiler maintenance specialist. You will avoid unnecessary problems and save even more.


Regular inspection

To prevent the accumulation of tar in the boiler, it should be regularly inspected and cleaned. He is a suitable helper Fermit - tar remover .



To reduce tar in the boiler you can use preparations that reduce its formation and improve boiler efficiency.

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