Just got this code from a friend...if you go to the Champion Energy website and use promo code CHAMP808 - you get the reduced rates that the employees themselves get. And you can lock in the low rate for a year (which will cover next summer).
They offer service in all of Texas and parts of Illinois...
use this link, or do a search....
http://www.championenergyservices.com/promo.asp?promo=CHAMP808