How to make my heater hotter?

Are the foam seals in the hevac unit shot?

If they get old and disintegrate, they will let the air flow around the heater core, instead of through it to get the heat. You may have to remove the duct unit, take it apart, and replace the foam seals all through it.


The A body heaters crank when they work right. I drove them for daily drivers for years.