How Does a Mixer Shower Work?

An image showing a Bristan  Mixer Shower that is part of the technical guide How Do Mixer Showers Work by heatandplumb.com | Article Image

How Does a Mixer Shower Work?

A mixer shower, as its name suggests, mixes a hot and cold water supply in a valve to reach your chosen temperature before it reaches the shower head. They are intended for use with either low or high pressure water supplies and will not increase the low pressure of a water flow. They are designed to be either exposed, where the entire unit is mounted on the surface of a wall, or concealed, where the valve is visible but most of the pipework is installed into the wall and hidden from view. This versatility means mixers are suitable for installation in new builds and also buildings where it's only possible to make minimal structural alterations.

In order for a mixer shower to operate properly, the hot and cold water supplies need to be fed into the system at the same pressure. The major drawback to a mixer shower's dependence on external water supplies is that these will usually be shared with other appliances in the home, such as kitchen taps or toilets. When these other appliances are used, the shower's hot or cold water supply can be interrupted, meaning extreme temperatures one way or the other. This also necessitates a ready supply of hot water, meaning a water boiler will need to be in use regularly, even in the summer when it might otherwise be inactive.

Thermostatic mixers constantly monitor the water temperature and make immediate adjustments to the hot and cold balance to maintain a consistent temperature. Some modern thermostatic mixers even feature an automatic shut-off if one of the flows is reduced, which avoids cold bursts and scalding heat. Many feature a maximum permitted temperature, ideal for making your bathroom safer for children. It is also possible to avoid shower flow interruptions in low pressure systems by adding separate pipes from your hot and cold supplies. This requires small modifications to be made to your hot water tank, which a plumber will be able to install for you. Our guide on water pressure systems will help you determine which system you have.

Mixer showers remain the most economical choice of shower unit, particularly in homes with central heating and a frequently used boiler. Though they're dependent on two external water supplies, they will pose few problems in the majority of modern homes, especially when installed by a professional.

shop mixer showers

Topics Covered
  • Technical Guides
  • water pressure
  • exposed showers
  • how do mixer showers work
  • water systems
  • concealed showers
  • thermostatic mixers
  • digital mixer showers
  • showers explained
  • showers
Share Now
Ant Langston | Author Image

Ant Langston

Digital Marketing Manager | Pioneer Bathrooms

Ant is a digital marketing and SEO expert with over a decade of experience in the bathroom industry. Ant has written on wide-ranging topics within the heating and plumbing sectors with hundreds of published articles for leading online retailers.

Read more articles by Ant Langston

Related Posts

Shower door leaks are frustrating because water escaping onto bathroom floors creates slip hazards, damages flooring, and suggests something's wrong despite the shower looking fine when not in use. Most leaks have straightforward causes that you can diagnose and fix yourself without calling professionals or replacing the entire door. Let’s take a look at how to identify where water's escaping, and how to actually stop it.

The difference between single and dual slide shower doors seems trivial until you're using them daily and discovering how door configuration affects access, cleaning, and water containment. Both sliding mechanisms save space compared to hinged doors, but they function quite differently in ways that matter for practical bathroom use. Here's what actually separates them.

Radiators are remarkably low-maintenance heating components, but completely neglecting them leads to reduced efficiency, higher bills, and eventual failure requiring expensive repairs or replacement. Basic maintenance takes minimal time and costs almost nothing whilst preventing the majority of common radiator problems. Here's what actually needs doing - and when.

TRADE ACCOUNT

Apply today
Log in on any device
Pick what you want
See trade discount
Call us or shop online
Get priority shipping