You can also disconnect the power and fuel lines from the boiler. Place the end of the fuel line in a container to catch any fuel that may drip out of the line. [3] X Research source
The combustion chamber is where the fuel mixes with air and is ignited to generate heat. Soot is a byproduct of this process. [7] X Research source Hardware stores often offer industrial shop vacs for rent. They are also available from construction supply rental companies.
Air filters can be purchased online or at a hardware store that stocks HVAC supplies. Follow local hazardous-waste regulations when disposing of the old filter. [9] X Research source
While the fuel valve is open, place a container under it to capture any excess fuel. [12] X Research source
Check the owner’s manual for guidance on how often to lubricate the circulating pump. [14] X Research source
If tank begins to refill after a couple of days, consult an HVAC professional. There might be a leak or the air tank may need to be recharged. [16] X Research source
