See list below for the location of the serial number plate depending on your unit type.

If you need further assistance locating your serial number, please contact Customer Care at 1-800-621-9419.

Product Type Location of Serial Number
Tankless Water Heater Left side panel
Direct Vent Wall Furnace Right side panel
Hydronic Furnace Front panel, lower right corner
Condensing Boiler Remove front panel, left side
Indoor Fireplace Card attached to bottom of unit
Outdoor Fireplace Card attached to bottom of unit
Rice Cooker Base panel
Vent-Free Fan Convector (229, 329, 429) Back, lower panel
Vent-Free Fan Convector (606, 509, 592) Right side panel
Vent-Free Infrared Left side panel