When choosing a shower column, we first look at the design, the finish, and the size of the showerhead. Yet, the choice that has the greatest impact on your daily comfort lies in the mixer: thermostatic or mechanical. Here is how to easily tell them apart.
Mechanical mixer: manual adjustment
A mechanical mixer blends hot and cold water according to the position of the handle. You set the temperature manually, then adjust it if it changes.
- Its advantages: a more affordable price, a simple mechanism, and an installation with no particular difficulty.
- Its limitation: the temperature can vary during your shower. If someone opens a tap elsewhere in the house or flushes the toilet, the pressure changes and the water can suddenly become hotter or colder.
Thermostatic mixer: the temperature you choose, and it stays that way
A thermostatic mixer has two controls: one for the temperature, the other for the flow rate. A thermostatic cartridge continuously adjusts the blend to maintain the chosen temperature, even if the pressure in the home varies.
- A stable temperature: no more sudden cold or hot shocks during your shower.
- Enhanced safety: most models have a safety stop at 38°C. To go beyond this, you have to press a button. This is reassuring with children or elderly people.
- Less waste: you immediately get the right temperature, without letting the water run while you adjust it.
Comparison table
| Criterion | Mechanical | Thermostatic |
|---|---|---|
| Temperature adjustment | Manual, needs readjusting | Automatic, stable |
| Anti-scald safety | No | Safety stop at 38°C on most models |
| Comfort during pressure variations | Low | High |
| Price | Lower | Higher |
| Maintenance | Simple | Regular cartridge descaling recommended |
Which model for which household?
- Family with children, elderly people, sensitive skin: the thermostatic is essential for safety and stability.
- Home where several water points operate at the same time: the thermostatic prevents temperature changes.
- Secondary shower room, small budget, occasional use: a mechanical model may be sufficient.
The point to check before buying
A thermostatic mixer does not heat the water: it blends the hot and cold water supplied to the column. For it to work properly, you need:
- hot water production that is hot enough and consistent;
- adequate pressure and, ideally, balanced between hot and cold water;
- inlets connected in the correct direction: hot water on the left, cold water on the right as a general rule.
If in doubt (instantaneous water heater, low pressure, old installation), have these points checked by a professional before installation.
In summary
The mechanical mixer remains a simple and economical solution. For a comfortable daily shower, the thermostatic column is the safest choice: the temperature you have chosen no longer changes.
👉 Discover our thermostatic shower columns, available in several finishes.
Frequently asked questions
Does a thermostatic column use less water?
It mainly prevents letting the water run while finding the right temperature. The savings depend on your habits and the flow rate of the showerhead.
Can a mechanical mixer be replaced by a thermostatic one?
Yes, in most cases, if the water inlet centers are compatible (often 150 mm) and if the hot water is properly connected to the correct side.
Why is my thermostatic mixer not providing enough hot water?
Reversed inlets, limescale, or hot water that is not hot enough are the most common causes. We detail the solutions in our dedicated article.
