A hot shower after a long day, or warm water to wash the dishes, is one of those everyday comforts most of us take for granted until the heater stops working properly. For many households in Singapore, the water heater quietly does its job for years without a second thought, right up until it starts acting up or needs replacing entirely. Whether you're moving into a new flat, renovating an older one, or simply dealing with a heater that's on its last legs, understanding how t