Max Air on Dash Air Condition
My question is that when you turn the dash air switch on Max Air, I think it closes the door to just to re –circulate the air inside he coach. But before I had my dash air repaired it seemed to blow h...
Forum Discussion
Hello, I don't post here much, but i do know your problem.
I've worked with airflow for over 30 years, (now retired)
Most, (if not all) automotive a/c systems use a squirrel cage type of blower for your a/c.
I will try my best to explain my reasoning.
All my cars and RV have a "MAX" A/C setting.
All this does is to shut off the outside intake, and flip a door to suck up fresh air from 'inside' the vehicle.
This makes the motor able to suck more air thru the blower using the same voltage. The motor will be able to suck more air since it is no longer pulling air from who knows how many crooks and turns and how long of plastic or coiled type ductwork.
When you switch to recirc or MAX this will increase the airflow thru the duct work, and it 'will' use more current, but the actual airflow will increase because of the reduction of the inlet restricting to the blades of the blower and it 'will' make the motor increase airflow.
So, while the switch does not change the voltage to the switch, it allows more airflow thru the system by shortening the airflow path to the blower, and you will feel it thru the vents if all installed correctly.
Any questions, just ask. ;)
I've worked with airflow for over 30 years, (now retired)
Most, (if not all) automotive a/c systems use a squirrel cage type of blower for your a/c.
I will try my best to explain my reasoning.
All my cars and RV have a "MAX" A/C setting.
All this does is to shut off the outside intake, and flip a door to suck up fresh air from 'inside' the vehicle.
This makes the motor able to suck more air thru the blower using the same voltage. The motor will be able to suck more air since it is no longer pulling air from who knows how many crooks and turns and how long of plastic or coiled type ductwork.
When you switch to recirc or MAX this will increase the airflow thru the duct work, and it 'will' use more current, but the actual airflow will increase because of the reduction of the inlet restricting to the blades of the blower and it 'will' make the motor increase airflow.
So, while the switch does not change the voltage to the switch, it allows more airflow thru the system by shortening the airflow path to the blower, and you will feel it thru the vents if all installed correctly.
Any questions, just ask. ;)
