Red Seal Oil Heat System Technician Exam 2025 – 400 Free Practice Questions to Pass the Exam

Low oil pressure in heating systems can often be attributed to clogged filters or air leaks. When filters become clogged, they obstruct the flow of oil through the system, preventing the proper amount of oil from reaching the burner. This restriction can lead to insufficient oil pressure, affecting the efficiency and function of the heating system.

Additionally, air leaks in the oil lines can introduce air into the fuel system, which can also disrupt the fuel supply and result in lower oil pressure. The presence of air in the system can lead to a phenomenon known as "cavitation," where vapor pockets form in the fuel, further reducing oil pressure and potentially causing the burner to operate improperly or even shut down.

Understanding how these issues impact oil pressure is vital for the maintenance and operation of heating systems. Keeping filters clean and ensuring that all connections in the fuel lines are secure can help maintain optimal oil pressure and overall system performance.