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.
Replace Thermostat
What do you mean by "has no heat"? No air blowing out, blowing out cold air when heater is on, blowing nothing at all? Heater not turning on? What specifically is happening?
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Is it blowing cold air only or not blowing any air at all.
You will need to adjust the temp gauge from cold to warm. Its located right on the middle vent(where the air blows out).
Make sure the switch is clicked onto the heat side and that you have not selected recirculate. If that is not the case, then contact your apartment maintenance.
Probably a bad thermostat.
Your heat pump may not be blowing cold air because it could be low on refrigerant, have a faulty compressor, or a problem with the thermostat. It is recommended to contact a professional HVAC technician to diagnose and fix the issue.
Your central heat may be blowing cold air due to issues with the thermostat, a malfunctioning heating element, or a problem with the ductwork. It is recommended to check these components and consult a professional if needed to diagnose and fix the issue.
Your heat may be blowing cold air due to issues with the thermostat, low coolant levels, a malfunctioning heater core, or a problem with the blend door. It is best to have a professional inspect and diagnose the issue for an accurate solution.
water pump bad if u over heat with no heat or air in system remove cap or get it re filled
Car not blowing air or heat