Jeep Liberty heater blows cold air despite new radiator, thermostat, and fresh coolant on Jeep Liberty

Some Jeep Liberty owners report experiencing issues with their heater blowing cold air, even after replacing the radiator, thermostat, and adding fresh coolant. These problems may stem from a clogged heater core, which can disrupt the flow of warm air. Additionally, low coolant levels in the system can hinder the heater's performance, while a faulty thermostat, despite being new, may fail to regulate temperature properly. Some owners also find that air trapped in the cooling system prevents effective circulation of warm coolant, further contributing to the issue. To resolve these concerns, it is advisable to check and possibly replace the thermostat, flush the heater core, ensure adequate coolant levels, and eliminate any air pockets in the cooling system.