One Heater Box to Cab Vs. Two

[Daniel G]

Is there a noticeable difference between the heat in the cab for buses with one heater box routed up front (i.e. passenger buses with a heater log) vs. those with both routed up front? Here is why I ask...I am going to turn my 13 window into a camper, so I will be running a flat floor in the back and a z-bed. I have removed the heater log already as the cargo floor is rusty around it. I did keep it so I could put it back one day if I wanted. I have a heater Y from a panel that would route both heater boxes up front that I am thinking of putting in the bus. Before I do all this work, is it even going to be worth it? I was thinking both heater boxes up front would be better...But in the Bay Window forum most people got a better result with one heater box routed to the rear and one up front, So I am curious...Those of you with both panels and passenger buses...Can you tell a difference at the defroster vents between them?
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1967 13 Window Deluxe

1966 Beetle

1971 Panel

1978 Westfalia Camper

Transmissions For Dummies

[fluxcap]

Ok, you've eliminated the heater log, I got that part. But are you thinking about rigging up some other type of outlet for rear heat? Or are you strictly asking if you should run both boxes with a Y pipe to the front versus just one (with no rear heat).

When we drove my bus (panel converted to camper) down to Bulli in 2012 we left pretty late at night, and it started getting COLD around midnight. I couldn't figure out why the cabin wasn't getting very warm. Turns out one of my heater cables had slipped loose on the heater box, and I was only getting half heat. Once it was hooked back up, it made a HUGE difference in heat flow.

So if your options are to either add the Y and get heat from both boxes, or just run one box, I definitely say that fabbing up the Y would be worth the effort.

If your options are to run both up front, or run one to front and one to rear (someway other than the log), I can't speak for that.
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Eric - 1966 camper bus

"It's like, how much more black could this be, and the answer is none.......none more black."

[Daniel G]

I could leave the rest of the ducting and just run an outlet from under the Z-bed for one heater box...Or I could eliminate the rear heat completely and run both heater boxes to the cab. I wanna get the best heat up front, but if there will be negligible difference between having one heater box going up front vs. both, I don't wanna do the extra work of replacing the heater Y...
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1967 13 Window Deluxe

1966 Beetle

1971 Panel

1978 Westfalia Camper

Transmissions For Dummies

[Clara]

If you have both boxes sending heater up front it does have noticable more defrost that just one up front

if you have one to the front and one to the back, it is warmer in the back that bothe to the front. Think less cold air on the back of you neck when driving.

My 15 window has the heater log in place with a bay westy z bed in the back. I cut the bed base to l fit with the log intact, and removed the door, to let heat out. When I drive to the campsite with the bed made up and heat on I have a preheated bed, which is definate bonus.

[Riff Raff]

I live in a significantly colder climate than most bus owners.
Although I no longer drive air cooleds in the winter, spring mornings and autumn evenings are much more comfortable in a bus with some semblance of heat.
I rigged both my heater boxes to blow up front, as that is where the majority of people are, a majority of the time.
I like it.
I notice much greater heat and noticeable higher air flow coming out of the vents.
If you do most of your driving with the front seat populated and the back not so much, I recommend the modification.
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The greatest obstacle to discovery is not ignorance, but the illusion of knowledge
- Daniel Boorstin

[mandraks]

[otis_bartleh]

Funny timing for this post. I was thinking about the exact same thing for the past couple days...
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-Adam
'59 Mango Bus
'69 Bug

[BarryL]

If you're talking strictly about how much comes out in front it is hugely more.

[oldschool64bus]

Both boxes to the front puts out WAY more air!

[oldschool64bus]

Both boxes to the front puts out WAY more air!

[Daniel G]

Both to the front is how I will be running it then..I would like to have good defrosters more than anything else. Down here in Alabama we have more days in the 40s and 50s with rain than unbearably cold ones in the winter.
_________________
1967 13 Window Deluxe

1966 Beetle

1971 Panel

1978 Westfalia Camper

Transmissions For Dummies

[cru62]

[mandraks]

[oldschool64bus]

[Longboardluv]

I too have cut out my heater log and will have to run both heater boxes to the front. Do you have any pics of what you did? I know it's fairly straight foward but looking for any tips or tricks.