There are no real house clubs. But you can find house music at some clubs. It depend on the Dj playing. Check out Club Glow - Bangkoks only real underground club - and check the line ups at Bed Supperclub, Levels, Bash or Q Bar.
Yeah, Glow is great. I met the lady who runs it and she's really cool and friendly. DJ's are pretty cool, it can get kind of corny with some of the House they play but some of them are cool. Definitely the best place to get your gig on in bangkok. Crowd is a little older too, don't expect to pull the cutest girl in town there.