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There are 3 possibilities. One, your thermostat is set to cold air or your vent setting is set to allow outside air.
Two, the control valve to the heater core is stuck, and not allowing the hot water to enter the core, so the core remains cold.
Three, the water in your vehicle's radiator is low, and not allowing enough hot water to enter the core.
My suggestion is to be sure the radiator is full. Be sure the car's engine is completely cooled before opening the cap.
What else can I help you with?
Why is my emergency heat blowing cold air instead of warm air?
Your emergency heat may be blowing cold air instead of warm air because there could be a problem with the heating system, such as a malfunctioning heating element or a lack of fuel. It is important to have a professional inspect and repair the system to ensure it is working properly.
Why is one vent blowing cold air when the heat is on?
One possible reason for a vent blowing cold air when the heat is on could be a problem with the heating system, such as a malfunctioning thermostat, a clogged air filter, or a faulty heating element. It is recommended to have a professional HVAC technician inspect and repair the issue to ensure proper functioning of the heating system.
Is the AC condenser blowing cold air in your system?
Is the AC condenser in your system blowing cold air?
Why is my HVAC system blowing cold air instead of heat?
Your HVAC system may be blowing cold air instead of heat due to issues such as a malfunctioning thermostat, a clogged air filter, low levels of refrigerant, or a problem with the heating element. It is recommended to contact a professional HVAC technician to diagnose and fix the issue.
Why is my apartment's heat blowing cold air?
There could be several reasons why your apartment's heat is blowing cold air. It could be due to a malfunctioning thermostat, a problem with the heating system, or air duct issues. It is best to contact your landlord or a professional HVAC technician to diagnose and fix the problem.
Your 2001 Chevy Malibu is over heating and your heater is blowing cold air?
Your cooling system is empty of coolant and you must have a large leak somewhere.
Why is your home electric heater blowing cold air?
One reason your home electric heater is blowing cold air is the heating elements are burned out. A bad thermostat may also be the problem.
How do I fix the heating system blowing cold air?
Call a heating specialist. Heaters are too dangerous for amateurs to fool with. There is danger of fire and, in the case of gas, asphyxiation if they are not properly repaired and adjusted.
Why is my HVAC system blowing cold air instead of warm air?
There are several possible reasons why your HVAC system may be blowing cold air instead of warm air. Some common causes include a malfunctioning thermostat, a dirty air filter, a problem with the pilot light or ignition system, low refrigerant levels, or a faulty heating element. It is recommended to contact a professional HVAC technician to diagnose and fix the issue.
Why is my furnace blowing cold air instead of warm air?
Your furnace may be blowing cold air instead of warm air due to issues such as a malfunctioning thermostat, a clogged air filter, a problem with the pilot light or ignition system, or a malfunctioning heating element. It is recommended to check these components and consult a professional HVAC technician for further diagnosis and repair.
Why is my gas furnace blowing cold air instead of warm air?
Your gas furnace may be blowing cold air instead of warm air due to issues such as a malfunctioning thermostat, a clogged air filter, a problem with the pilot light or ignition system, or a faulty heating element. It is recommended to have a professional HVAC technician inspect and repair the furnace to resolve the issue.
Why is the heat in my car alternate between hot and cold?
There are many reasons that the cars heating system may alternate between blowing hot and cold air. Some common causes of this include the heater core and air pockets in the coolant.
