Low coolant steals your heat—when radiators leak or pumps fail, your heater core runs dry. The core itself might betray you—developing leaks, holes, or blockages that silence its warming song. A stubborn blower motor? It traps that precious heat, never letting it reach your shivering hands. Over time, those tiny HVAC controls and valves surrender to age—breaking or freezing in place. And even the most pristine heater, brimming with coolant, sits dormant without a thermostat's wake-up call.
