Monk and?

Worth pointing out that you won't get the elementalist's best energy management abilities unless you go el primary, glyphs aren't that great. Btw, el/monk is a GREAT primary healer if you use it right, and can be much more resilient. Added bonus of being able to respec at any time and actually have fun playing a non-healer (you can do this with monk primary, but you'll take alot of grief from players who expected you to heal).
I wouldn't reccomend going element primary if you want to be a primary healer. This build is good to primarily heal monks and keep them alive. You need the Divine Favor to be a good healer. If you skip on this you're casting more and more of the spells over and over. I can cast 1 good spell and with a high divine favor, your ele primary would have to cast the same spell at least twice to compare.

I know Ele's have the larger healing pool, but when it counts in PvP, it seems like some of your healing spells can't recharge fast enough.

For a good basic healing setup that uses minimal energy split your points between divine favor and healing prayers. Then once you get Divine Boon (yak's bend). Maintain that enchantment while using Orison of healing. Orison of Healing uses low energy, you get the healing effects of that, the the divine favor effects, then the effects of the divine boon on top of it, it's like 3 healing spells in 1. Just watch the energy recharge.

Use that setup for other members and use healing breeze on yourself and you should be a decent healing monk as long as you know how to work with your team. You'll figure out the really cool skills later.