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How to Clean Your Lanair LS Preheater

Oct 15, 2026

Routine maintenance is important for keeping your Lanair waste oil heater running efficiently. Cleaning your LS preheater helps prevent buildup that can affect fuel heating and overall heater performance.

In this owner support video, learn about cleaning your Lanair LS preheater and why regular maintenance matters for reliable operation.

Why Is Cleaning Your LS Preheater Important?

The preheater helps bring waste oil to the proper temperature before it reaches the burner. Over time, residue and contaminants can accumulate, potentially affecting fuel flow and heating performance.

Regular preheater cleaning can help maintain consistent operation, reduce preventable maintenance issues, and keep your Lanair waste oil heater working properly.

Always turn off the heater, disconnect power, and allow components to cool before performing maintenance. Follow the cleaning instructions in your specific Lanair owner's manual.

Watch: Lanair LS Preheater Cleaning

Watch the video to learn about cleaning your Lanair LS preheater as part of your routine waste oil heater maintenance.

Need replacement parts or technical support? Visit Lanair for owner resources, genuine replacement parts, and assistance.

Made in USA — Wisconsin
Heating With
Waste Oil
Since 1976
Proud member of
4109 Capital Circle, Janesville, WI 53546