I am not getting any water out of my hot water taps. The cold water taps are working just fine though. We have a gas water heater... only about 3.5 years old. The pilot light is on and working. Also the burner is coming on. Yet I still have no hot water. Because the water heater is not very old I am inclined to think that there must be another problem. We live in a very rural area and therefore are unable to get a plumber out for a few days. From what I can see online I am wondering if there is an airlock? I would really hate to replace the water heater just to find out that there was a different issue. Could someone please help. Thanks so much!