Even though the boiler oil for your furnace has been well filtered and cleaned during its processing from crude oil, filters are still required (especially if the oil is being supplied from a steel storage tank). Oil filters play a vital role in the operation of oil-fired central heating systems, as they minimize the dirt and water that can enter into the boiler fuel system. Without an oil filter, dirt and oil will eventually damage the pump and block the burner fuel nozzle, causing the boiler to ‘lock-out’. Therefore, oil filters should be changed or cleaned at the start of the heating season and about midway through the season. This not only maximizes the efficiency of your furnace but its longevity as well.

 

There are two types of oil filters that can be used in an oil-fired central heating system. One filter separates out any water in the oil as well as acting as an oil filter. The other type, an in-line filter, has a disposable filter element.

 

Unifilter®