First we ordered a thermostat and installed it. The dryer still would not heat. After watching a number of videos on your site we caught a phrase where it mentioned that the dryer had heated and then stopped. We decided to try replacing the gas valve coils, as every other part on the dryer had continuity. We installed the coil kit, and the dryer is now heating and drying like a champ! Thanks for easy to understand videos and tips!! We only spent 30 bucks on parts versus a new dryer. Couldn 't be happier. (By the way, we are not DIYers when it comes to anything using electricity! These videos gave us confidence that we could fix our problem!!)