The heating system (1) of any one of the preceding claims wherein the supplemental heating element (12) is operably connected to a battery (24) that supplies electrical power to the heating system.Ħ. The heating system (1) of any one of claims 1-2 wherein the controller (22) is configured to provide power to the supplemental heating element (12) only when the activation switch (25) is engaged and the sensed temperature is less than about 140° F.ĥ. The heating system (1) of any one of claims 1-2 wherein the controller (22) is configured to provide power to the supplemental heating element (12) only when the activation switch (25) is engaged and the sensed temperature is less than about 160° F.Ĥ. The heating system (1) according to claim 1 wherein the supplemental heating element (12) is disposed downstream of the fan (11).ģ. (11), such that air is drawn through the heater core (8) by the fan (11) for heat exchange with the heating fluid a ventilation system (4) directing the air flow produced by the fan (11) throughout the passenger compartment a supplemental heating element (12) disposed in the ventilation system (4) and arranged to heat air flow produced by the fan (11) and a heating system controller (22) that controls electrical power to the supplemental heating element (12) as a function of a state of an operable activation switch (25) and sensed heating fluid temperature.Ģ.

A vehicle passenger compartment heating system (1) comprising: a fan (11) producing air flow a heater core (8) that receives heated heating fluid and is disposed upstream of the fan

Fibrothal heating modules