Good By Excess Dog House Heat
The owner of the auto repair shop that we use for repairs had told me that he could dramatically reduce the amount of engine heat coming into the cab on our RVs Ford chassis by fabricating a air dam ...
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We just run the cab air conditioner on the "MIX" setting, with it's fan speed set high - on 3 or 4. With the MIX setting the cold air only comes out of the floor vents and the defroster vents - it no longer comes out from the dash at chest height.
This large amount of air coming out of the floor vents keeps the cab floor area cool. The air coming out of defroster vents is initially shot up high in the cab and quickly sinks down into the cab to gently cool the driver and passenger with no direct cold air blasting at them. You can set the air conditioning temperature at any coolness desired, but you must keep the fan set on 3 or 4. All this works like a charm to eliminate the hot floor.
This large amount of air coming out of the floor vents keeps the cab floor area cool. The air coming out of defroster vents is initially shot up high in the cab and quickly sinks down into the cab to gently cool the driver and passenger with no direct cold air blasting at them. You can set the air conditioning temperature at any coolness desired, but you must keep the fan set on 3 or 4. All this works like a charm to eliminate the hot floor.
