Ok so this came up in our game yesterday. When a cleric channels energy for healing do doors and walls stop the effect? I have not been able to find anything in the rules that says a wall or door will block the effect so I am trying to find out some sort of official ruling. I personally torn on this one, part of me wants to let it happen but then that brings up all sorts of other complications.
Nope, it won't go through doors or walls.
Channeling energy causes a burst that affects all creatures of one type (either undead or living) in a 30-foot radius centered on the cleric.
A burst spell affects whatever it catches in its area, including creatures that you can't see. It can't affect creatures with total cover from its point of origin (in other words, its effects don't extend around corners). The default shape for a burst effect is a sphere, but some burst spells are specifically described as cone-shaped. a burst's area defines how far from the point of origin the spell's effect extends.
No it does not go through doors. The ability must have line of effect. It can not more ignore the door than a dragon's breath weapon could .