Types of boilers

Combi

Combi boilers heat water directly from the mains when you turn on a tap. So you get hot water instantly – without a cylinder or a tank in the loft.

Standard

If you have a hot water storage cylinder as well as cold water tank in the loft, your boiler is likely to standard. These are also called Regular, Traditional or Conventional boilers.

System

If you have a hot water storage cylinder but no cold water tank in the loft you’re likely to have a system boiler. The boiler will normally have a pressure gauge on the front of it.

Back Boiler

A back boiler unit (BBU) is a boiler built-in behind an electric or gas fireplace. You can also choose this option if you have a Potterton Powermax.