Why won’t my car heater get hot? There are a number of causes for a “No Heat” condition to occur. Low coolant level due to a leak, restriction in the heater core or radiator, or a faulty thermostat are among the most common. The video illustrates a restricted heater core caused by deterioration of the anti-freeze. Following a maintenance schedule that includes flushing the cooling system every 24 months or 30,000 miles with professional quality BG automotive products will prevent this condition from ever occurring. Now thru December 31, have the certified mechanics at Murphy’s Autocare perform a Winter vehicle prep service that includes testing the anti-freeze, and keep your car running safe and dependably.