Here I explain the fundamentals of your boiler system and how to remove the air stuck in your heaters / boiler

How to purg (remove) air from your boiler

Over time, your boiler can get filled up with all kinds of gunk and debris from the chimney.  Scales from the boiler sections and/or just plain soot.  It's very important that this be cleared out, so the flame from the boiler can pass through the boiler sections.

Below you'll see just how much buildup you can get.  And to tell you the truth this one isn't the worst I've seen! This one only took me about 60 minutes to clean.

Changing the oil filter on your oil fired boiler

Here is a video of how to change the oil filter on a oil fired heating system. You will also learn how to re-prime your system if you run out of oil.  Not all systems look alike, but all have a similar filter system and ALL get primed the same way.  The trick is to get all the air out of the system.  You can find these filters at any Home Depot , Lowes or home centers ...