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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?
Low coolant level, or a plugged heater core.
Low coolant and a clogged heater core are possibilities.
faulty control valve on heater or air in the lines
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.
You may need to replace your Thermostat or your Heater Core.
If you are saying the heater is blowing out cold air you need to change the heater core which is located inside the dash
did you check the heater core because my truck did that and that was what was wrong
Check to see if you pilot light is lit
because u pooped in it
Most likely your pilot light is out
It is because your heater is having to heat up so its blowing cold air out while its heating up.This means your heater is not very efficient and it needs to be checked.