Roof or basement AC

[Pete Masterson]

There are many PTs in the mid-80s that offered either "cruise air"
basement ACs or roof mounted ACs (usually by Duo-therm). Arguments
can be made for either. The basement ACs offer less roof clutter and
are potentially quieter inside the coach than the roof-top units.
Roof ACs don't take up space in the basement and are easier to
service and/or replace. To the best of my knowledge, both systems are
ducted so run through air vents throughout the coach (although my
knowledge of the earlier 80's era BBs is limited).

One argument is that the cruise air units draw their input air from
near the "hot pavement" and that the roof top units get "cooler" air
from above. I don't know if this really makes much of a difference in
actual practice.

From my view, the biggest issue would be the loss of basement
storage space with the cruise air. Beyond that, it's mostly a matter
of personal preference.

Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
aeonix1@...
On the road at Idaho Springs, CO



On Aug 23, 2008, at 7:25 AM, bubblerboy64 wrote:

> I am window shopping PT buses. I noticed the first two ads on the bill
> board are both for 36 PT's. One talkes about roof ac and the other
> talkes about basement ac.s, The newer one says roof ac. I would have
> thought them the same. I thought all the PT's had the basement AC.
> John Heckman
> central Pa
> 1973 FC
>