How to replace a mixer: steps before and after buying

Before you buy — a 30-minute check

1. Shut off cold and hot; open the old mixer to relieve pressure.
2. Photograph supplies and threads (often 1/2″ or 3/8″ + M10 on the mixer side).
3. Measure whether the new model fits the same hole in the basin / the same spacing on the wall.
4. Note whether you need new supplies and gaskets — often yes.

What you usually need in the kit

• New mixer — e.g. Jika Talas, Jika Lyra Smart, Hansgrohe Logis 160.
• Supplies: Tucai F1/2–M10 35 cm or Tucai F3/8–M10 35 cm — by your threads.
• Gaskets: paranite 1/2″, rubber 1/2″.
• For wall bath/shower — eccentrics: Remer 1/2×3/4.

Work sequence

1. Shut off water and relieve pressure.
2. Disconnect supplies; hold a bowl — water will run out.
3. Undo the fixing under the basin / on the wall; remove the old mixer.
4. Clean the surface; check the basin sealing zone is not damaged.
5. Fit the new one per the manufacturer diagram; tighten without “force until it breaks”.
6. Connect supplies with new gaskets; cold/hot — on the correct sides.
7. Open water slowly; check seals with dry paper.
8. Check the aerator — Remer F22 — if flow looks odd.

When to call a tradesperson

• Corroded supplies “won’t budge” and risk breaking the pipe in the wall.
• Built-in body / concealed mounting.
• No clear cold/hot marking and mixed old schemes.

After installation