Where should a properly sized and rated oil filter or strainer be installed?

A properly sized and rated oil filter or strainer should be installed in the oil supply line to an oil burner. This placement is critical because it ensures that any impurities or contaminants in the oil are removed before they can reach the burner. By installing the filter in this location, it protects the burner’s components, such as the nozzle and ignition system, from clogging and damage due to debris.

This strategic placement helps maintain the efficiency and reliability of the oil heating system by ensuring that the fuel supplied to the burner is clean. If contaminants are present in the oil, they can lead to reduced combustion efficiency, uneven burning, and potentially hazardous conditions. Therefore, the oil supply line is the best location for the filter or strainer to serve its purpose effectively.