High humidity levels, installing an HRV will fix that.
The AC runs to remove moisture from the air inside your vehicle. Moisture causes the fog inside of your windows. The ac runs to remove the moisture and the heater runs to heat the air.
Flies are attracted to food sources, moisture, and warmth inside the house. They may enter through open doors or windows, or be brought in on clothing or pets.
Condensation forms on windows when warm, moist air inside the house comes into contact with the cold surface of the window. This causes the moisture in the air to condense into water droplets, creating the appearance of "sweating" on the inside of the window. To reduce condensation, you can improve ventilation, reduce humidity levels, or use a dehumidifier.
it may be the only one by a heater
Condensation forms on the inside of windows when warm, moist air comes into contact with a cold surface, causing the air to release water vapor in the form of droplets.
To prevent mold from growing on the inside of your windows, regularly clean and dry the windowsills and frames, improve ventilation in the room, and use a dehumidifier to reduce moisture levels.
When the temperature of the glass surface is below the dew point temperature of the air inside the room, moisture from the air condenses on the glass surface. If it's below freezing, this condensed moisture turns into frost. This happens because the cold glass surface causes the warm air inside to lose its heat, leading to condensation and subsequent freezing.
Condensation forms on the inside of windows in the morning because the warm air inside the room comes into contact with the cold surface of the window, causing the air to cool down and release moisture in the form of water droplets.
== == The air temp outside is cooler than the air inside the car, so moisture forms on the inside of the glass surface. If this happens while you are driving, you may be adding to the problem by your breathing. Your breath contains a lot of moisture and it lands on the inside of the car windows. Solution............ run the defroster fan on hot and direct the warm air onto the windshield, and the side windows, PLUS open the windows at least an inch to let the dampness out of the car.
To prevent moisture from accumulating inside your window, you can improve ventilation by opening windows regularly, using a dehumidifier, sealing any gaps or cracks around the window, and using insulating window coverings.
You're probably seeing moisture condensing. When your hair is wet, or if there is moisture in your car, and there is heat or just simply evaporation of water, you'll see some moisture collect on your window. Draw funny faces or write words on the window if you'd like.
Condensation forms on windows in winter because the warm air inside the house contains moisture. When this warm air comes into contact with the cold surface of the window, the moisture in the air condenses and forms water droplets on the glass.