Heater heats but does not blow. Is the Heater core fused

check the fuse box and look for heater fuse.

Not a fuse. Condensation on window indicates plugged heater core or heater core needs replaced.
Also check for bad headgasket.

First check your fluid in your radiator if its low your heater will not work. Check all your heater hoses and make sure they are not kinked.
Your heater core may be plugged That will stop the heat flowing as well. If it's the heater core it will have to come out and replaced most likely. Not sure if there is a heater valve on that car.

No hot air is due to low coolant, or even poor coolant flow. The engine heats up the coolant, and it passed through your heater core, and the heater blower motor pushes air through the heater core to warm up the air. If your "fan"is working, but the air is cold, make sure your coolant level is good.

Well if the blower is not blowing at all, then I would say one should check into the motor for the blower and the relay as well as the fuse to it.

If the heater blows but no heat comes out (it's cold in the winter) despite setting the controls to maximum hot, then I would say the blend door could be not positioning itself to allow hot air in from the heater core, or the heater core is plugged.

So,

If the two heater core tubes at the firewall are hot, then it's a blend door problem.
If the two heater core tubes at the firewall are cool, then it's a plugged up heater core.

Good luck on this repair.

You may have to replace your heater core . Heater cores are kinda like you outside ac unit and if you stand by it you can feel all the hotter air blowing from it to the cooler atomosphere!!!! So basicly your heater core are alumminum fins that your blower pushes recycled heated motor air through', and into the cab . Maybe the blower is weak . Check your fuses and hoses!!!!

if the heater is blowing cold then it is not a fuse
it is probably your thermostat or heater core
but i will change the thermostat first
and bleed the heating system also

What does that mean? It blows air but not hot air? It doesn't blow air at all with A/C or heat? I assume you mean it blows, just not hot. If so, make sure your car is running at operating temp. If the car isn't warming up, your thermostat is stuck open and the coolant can't heat up enough to transfer heat from the heater core to the air you're blowing out the vents. If your car warms up to operating temp just fine, you may have a heater core issue. Your core may be clogged with corrosion thus not allowing heat transfer as well. If the valve on the inlet hose to your heater core is bad it won't allow hot coolant into the heater core, once again no heat to the air blowing out your vents. One of these is most likely your issue. I hope this helps.

fuse in the fuse panel , or heater core temperature sensor switch , next if it blows but no heat coming thur vents check the raditor for collant level also possible heater core thanks

It's less than foot from the heater core. I would guess that either the damper doors are not on correctly or the vent hoses are not hooked up. Can you hear the blower motor running? Maybe they didn't hook the motor back up when they replaced the heater core. It takes a ground and a hot wire.I can't remember where it's at but it may be part of the same unit. Did you check the fuse?