It will be necessary to clean the glass window periodically. It is recommended that the window be cleaned at least 2 or 3 times per season with Gas Fireplace Glass Cleaner, following the manufacturer's instructions. This is a special window cleaner (there are many different manufacturers) that polishes the surface and leaves a protective coating behind.

Do not use any ammonia compounds to clean the glass as they will cause 'crazing' (small spider cracks) to appear in the glass. The need for more frequent cleaning will be caused by excessive silicone use or improper venting on direct vent fireplaces, and poor drafting on natural vent fireplaces..