How To Start Boiler After Running Out Of Oil

Running out of oil for your boiler can be a stressful situation, especially during the colder months. I recently experienced this issue myself and had to figure out how to restart my boiler once the oil was replenished. Here’s a detailed guide on how to go about restarting your boiler after running out of oil.

Gather the Necessary Materials

The first step is to gather all the necessary materials you will need to restart your boiler. This includes the new oil delivery, a screwdriver, and a wrench. Make sure you have these items readily available before you begin the process.

Prime the Boiler

Once you have the oil delivery, the next step is to prime the boiler. To do this, locate the bleeder screw on the oil pump and place a container underneath to catch any oil that comes out. Loosen the screw with the wrench and let the oil flow until it runs clean without any air bubbles. This process ensures that the air is removed from the oil line and the boiler can function properly.

Bleed the Fuel Line

After priming the boiler, the next step is to bleed the fuel line. This can be done by loosening the bleeder screw on the fuel pump and allowing any air to escape until only oil comes out. It’s essential to do this carefully to avoid any oil spills or accidents.

Reset the System

With the fuel line bled, the next step is to reset the boiler system. Depending on the model of your boiler, there may be a reset button that needs to be pressed to restart the system. Consult your boiler’s manual if you are unsure about how to do this for your specific model.

Monitor the System

Once the boiler is restarted, it’s important to monitor the system closely for the next few hours to ensure that everything is running smoothly. Keep an eye out for any unusual noises, leaks, or error codes on the boiler’s display.


Restarting your boiler after running out of oil can be a straightforward process as long as you take the necessary steps to prime the boiler, bleed the fuel line, and reset the system. However, if you are unsure about any of these steps, it’s always best to contact a professional to assist you. Remember to keep up with regular maintenance and oil checks to avoid running out in the future.