Should you be worried when your toilet makes a hissing sound?
Yes, you should be. The hissing sound is a common occurrence among many toilets. This does not mean that it is a design of the toilet tank to make weird noises during refill. This problem is associated with a malfunction in the toilet. The situation is not serious and you can easily fix it. This should not be an excuse to ignore it nonetheless. The costs associated with it may cut deep into your pocket in the long-run.