Perhaps it’s time to expand your home and you’ve decided to turn the basement into additional living space, but that water heater needs to disappear. Or maybe the heater is in existing living space, such as the kitchen or laundry room.
The principles of your home’s plumbing are fairly simple. Fresh water comes in under pressure to fixtures such as sinks, bathtubs, showers and toilet tanks. Water is heated by passing through a water heater (see: How Does a Water Heater Work?) before traveling to the fixtures.
To determine whether you need an expansion tank on your water heater, you first need to understand what type of water heater you have, what an expansion tank is, and what size of an expansion tank you may need.