Getting standard heating as good as poss

The heating has never been good but at one point you could feel some air coming through and now pretty much nout.
Everything in engine bay is good so it's underneath or at front.
Does anyone have any diagram or videos of how it's all gone together so I can see the points that need checking.
Also is there anything to also make it even better once working? Squirrel fan?
Is there outlets in back under seat too? Never felt anything from there. Would love to get this nice and warm

 

i've found these brilliant for reference

http://myweb.tiscali.co.uk/freemefromthishell/vw/T2%20Heating.htm

http://www.ratwell.com/technical/Heating.html

 

Follow the pipes and look for leaks Dean. Once you fix them you won't need an aux fan. Common place is underneath where the big central pipe passes through the chassis level with each end of your sliding door. Often it'll be repaired right up to the chassis x-member, but not inside the x-member.
It could just be permanently wired "off" if the cables are broken.

 

Like Zed says start at the heat exchanger gaskets and work your way to the front.

 

Thanks guys I will read through what you have put properly and check.
Is there an outlet in back behind RNR bed? Can you get it good without a fan then?

 

It only takes one loose connection and all the hot air will be lost along with the pressure to push it along.

 

Thanks for the info Andy. This is all really good research and am going to have a proper look around over weekend so am really happy with all the comments.

I don't know if its just on our bus but the two red lavers in the same slot one on left goes down to bottom but one on right only goes half way down. Not sure if this is normal or if it gets stuck? From the link that Ricky posted in the illustration they both go down to bottom
http://myweb.tiscali.co.uk/freemefromthishell/vw/T2%20Heating.htm

 

3 quid? is that for a 350mm length hose? seems uber cheap

 

me too lol

 

Just remember, to get any decent heat at the front of the bus, you need to be moving forwards at normal speeds. if you are stationary (unless you have a heater fan in your engine bay) no air will be forced forwards