Mains pressure combination boiler
You have this system if: you have a boiler the size of a small kitchen cupboard located somewhere in your house and you don’t have hot and cold water tanks.
A combination boiler heats cold water direct from the cold mains water supply as soon as you turn on the shower or a hot tap in your home. Because the water supply to the system is mains fed this produces a forceful showering experience.
For a powerful showering experience a digital or mixer shower would provide you with a perfect showering experience. Alternatively, for a more gentle flow rate you could use one of Mira's electric shower fitted to the cold mains, this is also an ideal low cost option for a second or en-suite shower room.
Low pressure gravity system
You have this system if: there is a cold water tank in your loft and hot water cylinder in your airing cupboard.
This is the most common of all domestic water systems. It's called a low pressure gravity system because the water is kept under pressure via gravity-fed water, delivered from the cistern. How much pressure is produced is determined by the height at which the base of the cold water cistern is situated above the outlet. This is typically a minimum height of 1metre for showers. The greater the height the more pressure is created.
If you have this system in your home you can install a mixer, pumped digital or power shower. If you decide on a mixer and want a more forceful shower, fitting a pump will increase the flow rate and pressure more.
Mains pressure unvented
You have this system if: you have a boiler the size of a small kitchen cupboard somewhere in your home.
An unvented mains pressure system stores mains pressure water in a large strengthened hot water tank, usually found in the airing cupboard. The hot water will be heated either by immersion heaters fitted in the side of the cylinder or by a central heating boiler. This type of system doesn't require a cold water tank in your loft and provides a high water flow rate and pressure.
A digital or mixer shower is recommended for this type of system. For a more gentle flow rate you could use one of Mira's eco mixer showers or fit an electric shower to the cold mains, this is an cost effective option for a second or en-suite shower room.
Cold mains supply
You have this system if: you don’t have stored hot water at all, or don’t want to use up all your hot water when showering.
If you don’t have or want to use your stored hot water then an ideal solution is to fit an electric shower. The benefit of an electric shower is that it is always ready to use as the water is heated instantaneously within the shower. The amount of hot water flow in an electric shower depends on the power rating measured in kilowatts (kW). The higher the kW rating the higher the flow.