Whether you're troubleshooting water pressure issues, ensuring compatibility with your next shower system, or simply looking to understand how different water sources affect performance, having the right knowledge can make all the difference. This brief guide will walk you through key considerations related to unvented mains pressure system water supplies, helping you identify potential problems and find solutions that keep your shower working at its best.
You will know you have this system if: you have a boiler the size of a small kitchen cupboard somewhere in your house.
An unvented mains pressure system, stores mains pressure water in a large strengthened hot water tank (cylinder), 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 (cistern) in your loft and provides a high water flow rate & pressure. Other water systems also producing hot water at mains pressure are available which are generally known as thermal store systems.
How do I turn the water off?
In the absence of local isolation valves, turning the main stop cock for the property off will turn off both the hot and cold water. If you are unsure, we recommend you seek further advice from your local plumber or installer.
Recommended showers:
To get the best flow and pressure from this water system, consider:
