This forced air circulation comfort heating system uses only outside air for combustion, as the burners are completely sealed within the heating chamber. Combustion is discharged outdoors through the wall; this eliminates the expense of a chimney... all vent material is included for walls from 3/4" to 9" thickness.  As all direct-vent models operate with no open flame and use only outside air for combustion, they are recommended as garage heaters. Unit comes from factory set up for natural gas. In order to operate on LP (liquid propane), the Williams 7689 LP Conversion Kit must be purchased seperately. Please read this Important Safety Notice.

Standard Features

• Freestanding or recessed, furnaces are ideal for homes, apartments, offices, schools cabins and many other applications
• Automatic temperature and safety controls
• Counterflow blower system circulates ceiling-to-floor warm air
• Standing pilot light
• Multi-room heating with optional outlet kits - Heats up to three rooms
• Uses natural or propane gas