Window keep foggin up in the inside but the heat works well

hvac 101

windows fogging up
well that takes 2 things working to do that 3 really
1: heat, you have heat. and blower works.
2: you need the dampers to work, to send a/c side air to the windshield. (it mixes heat and a/c flows)
3: the A.C must work it is the DEHUMIDIFIER PART.

i do not understand at all the sticking thing,
are you saying the controls are failing, ?

This is normal if your A/C doesn't work. When set on defrost the A/C kicks on and off to keep the fog from appearing. the fog goes away once the heat inside reaches a certain temperature. Unless the drain is clogged and the plenum is holding water. Do you have ice on the inside? clean the drain. It's on the passenger side, near the bottom of the firewall. A rubber tube coming out, that goes to nothing.

will be the heater core, everyone I have ever seen is on the passenger side.not anything else to do it.fogging windshield,definately.

You do have a cabin air filter,it says it's under hood,look at firewall on passenger side,here's a picture of it Ted.Here's a guide to your blend door.

blend door motor bad,switch may be bad or the blend door motor is not hooked up properly

So you have the vent settings to blow out of the windshield vents and still have fogging?

You can dry out the air more quickly if you use the air conditioner setting. It sounds backwards, but this is exactly what the manual in my older car said to do. (Some cars are electronic control and won't let you do this however - or they do it automatically with the defrost vent settings).

For the older car, I would set the heat to the hottest setting and press in the a/c button. The a/c dries out the air, but it does not have to be set to run cold.

Another thing that could help is to make sure that you do not have the vents set for "recycling" the air. The picture should look like a u shapped arrow. Make sure it is not pressed in.

IN COLD WEATHER USE BI LEVEL AND TURN ON HEAT ON AC AND HEATER MODE SWITCH AND HEAT MODE THAT WILL KEEP WINDOWS FROM FOGGING UP KEEP CAR WARM ON THE INSIDE WHEN COLD OUT SIDE ALWAY CARRY PAPER TOWER OR SOME THING TO WIPE WINDOWS WHEN FOG UP MOST TIME I HAVE PROBLEM WINDOWS FOGGING UP WHEN YOU HAVE COLD RAIN OUT SIDE.IF WINDOWS FOG REALLY BAD I HAVE TO TURN MODE SWITCH TO COLD MODE AND TURN ON DEFOGGER.

Just replace the pollen (cabin) filter and should be fine.

could be related if condensation is on inside of windshield indicates heater core is leaking in heater box under dash on pass side car may be over heating check coolant level, coolant fan, and thermostat if working, also keep eye on temp gage if equiped

the guy doesnt know anything about hvac if he told you that ok do a pressure test on the cooling system and make shure you havent got a pressure loss if you do there will be a leak and if your windows are foggin up id say that there is a small leak probably on a hose clamp on the heater core line is leaking or the core itsself