08-16-2015, 08:34 AM
Your pressure tank isn't too small. I have a 2 gallon size and those are what I always recommend to my water tank customers. The main purpose of the pressure tank is to prevent the pump from cycling (hammering) too frequently when the toilet is almost full or you are running water at a trickle. I see no purpose for a larger tank. It's just more expensive to replace when it breaks and it will break. The small ones break too but they are only $50 or $60 at Ace. I've never heard a compelling reason for a large pressure tank. I know that the pump will come on more frequently but I don't see that as a problem.