Bar mixer showers

A bar mixer shower is the most popular shower format in the UK, and for good reason: it’s an easy upgrade, an honest piece of bathroom hardware, and almost always thermostatic. The bar runs horizontally across the wall, with the valve in the middle and the supplies feeding up from below. Most modern thermostatic mixers come in this format because it suits both retrofits and new bathrooms — and it’s the format buyers find easiest to picture in their space.

What is a bar mixer shower?

A bar mixer shower has the valve built into a horizontal bar that mounts across the wall. The hot and cold supplies enter the bar from below (through small upstands or wall connectors), the valve sits in the middle, and the shower head and handset bracket extend from one end of the bar. Everything is exposed, mounted on the surface of the finished wall, so nothing is hidden behind the tiles.

Underneath the bar format, the working parts are the same as any other mixer shower: a valve that blends hot and cold to the temperature you set. Most modern bar mixers are thermostatic, meaning the valve also holds the temperature steady when your hot or cold supply changes. The bar format is the body; thermostatic is the brain inside it.

Why bar mixers are popular

Three reasons most UK bathrooms end up with a bar mixer.

• Easy retrofit. The bar mounts on the surface of an existing finished wall, with the supplies running up to it from below. No need to open up the wall, remove tiles, or change the plumbing layout. A competent plumber can swap an old bar mixer for a new one in a couple of hours.
• Wide brand and finish choice. Because it’s the dominant format, every major shower brand makes a bar mixer range, in every finish from chrome to matt black to brushed brass. The choice is wider here than in any other format.
• Looks intentional. A well-designed bar mixer is a feature in the bathroom, not a compromise. The metalwork sits cleanly across the wall, the valve is centered, and the proportions feel resolved. It reads as designed rather than improvised.

Usually thermostatic

Most modern bar mixer showers are thermostatic as standard. The thermostatic valve constantly adjusts the mix to hold the temperature steady, so the shower doesn’t scald when someone flushes a toilet or runs a tap. If your cold supply fails entirely, the valve shuts the shower off rather than sending unmixed hot water at the user.

That safety feature has effectively become the baseline for bar mixers. A small minority of budget bar mixers are still manual (non-thermostatic), and they’re cheaper, but the gap is small enough that there’s rarely a sensible reason to pick manual over thermostatic in a family bathroom. The price difference is usually worth paying.

Trusted brands for bar mixers

Bristan make some of the most-stocked bar mixers in the UK, with strong everyday thermostatic ranges at sensible prices — the practical first-look brand for many household buyers. Grohe and Hansgrohe cover the premium end with German engineering and finishes that last, particularly in chrome, matt black and brushed brass. Mira and Aqualisa offer the well-engineered UK alternatives with strong parts availability years on. We stock all five, so the right bar mixer for your bathroom and budget is in the grid above.

Bar mixer FAQs

What is a bar mixer shower?

A mixer shower built into a horizontal bar that mounts across the wall, with the valve in the middle and the supplies running up from below. It’s the most common exposed mixer format in the UK and almost always thermostatic.

Are bar mixer showers easy to fit?

Yes, much easier than concealed shower systems. The bar mounts on the surface of the wall, with no need to open the wall or remove tiles, so a like-for-like swap of an existing bar mixer is usually a couple of hours’ work for a plumber.

Will a new bar mixer fit my existing pipework?

Usually yes. Modern bar mixers follow common supply-spacing standards, so a new bar typically fits onto the same wall fixings as the old one. Always check the dimensions on the product spec against your existing setup before ordering, and a variable connector can bridge small mismatches.

Do I need a thermostatic bar mixer?

For a family bathroom or anywhere with vulnerable users, yes. The thermostatic valve holds the temperature steady when your hot or cold supply changes, which prevents scalding. The price difference over a manual mixer is small and the safety benefit is genuine. Most modern bar mixers are thermostatic anyway.

Can I get a bar mixer in matt black or brushed brass?

Yes, every major brand offers their bar mixer ranges in matt black and brushed brass alongside chrome. The choice has grown substantially with the contemporary-finish trend, so matching a bar mixer to a matt black tap or a brushed brass towel rail is straightforward.

Filter the grid above by brand, finish and thermostatic, or read exposed vs concealed shower systems if you’re weighing the bar mixer against a concealed system.

We’ve been helping people upgrade their showers since 1999, with a 4.8/5 rating from over 60,000 Trustpilot reviews, free UK delivery, a price match promise and 365-day returns, so a bar mixer swap is a low-risk job to take on.

Big brands, small prices.