Basin Mixer Tap Replacement in Warsaw — Quick Swap Without Damage

The basin tap is dripping, the lever has gone stiff, or the whole unit looks like it has lasted through three refurbishments — a common situation. In flats around Mokotow and Praga-Poludnie, this is one of the jobs we get called for most often: a leaking mixer, a loose base, and water collecting under the sink. Replacing the whole tap is easier and more dependable than trying to rescue the old one. The work takes an hour to ninety minutes if the supply lines are in decent condition and the new tap is on site.

How much does replacement cost

The cost comes down to the type of tap (single-lever, twin-handle, with pop-up waste), the state of the flexible hoses, and whether the trap also has to be changed. If the existing supply hoses are still fine, we leave them in place; if they are not, we replace them for an extra charge. Fixings are covered in the labour price; the tap itself and consumables are provided by the client. Current rates for all bathroom plumbing work are listed in the table below.

Service	min	max
Washbasin installation	200 zł	300 zł
Washbasin replacement	150 zł	250 zł
Vanity unit with basin installation	250 zł	450 zł
Basin mixer tap installation	150 zł	250 zł
Basin mixer tap replacement	180 zł	300 zł
Floor-standing toilet installation	200 zł	350 zł
Floor-standing toilet replacement	250 zł	400 zł
Wall-hung toilet installation (frame)	350 zł	600 zł
Toilet frame replacement	600 zł	1200 zł
Bathtub installation	700 zł	1000 zł
Bathtub replacement	900 zł	1400 zł
Shower cabin installation	900 zł	1200 zł
Shower tray installation	500 zł	800 zł
Shower tray replacement	600 zł	1000 zł
Linear drain installation	800 zł	1500 zł
Shower cabin / bathtub sealing	35 zł/mb	60 zł/mb
Towel radiator installation	250 zł	450 zł
Towel radiator replacement	350 zł	700 zł
Drain cleaning	150 zł	300 zł
Trap replacement	120 zł	220 zł

How the replacement works

Important: all work on the water supply starts by shutting the valves. If the isolation valves under the basin do not seal properly or are not there at all, we shut off the riser. Do not try to replace a tap yourself if the valves are faulty — that is the quickest way to flood the flat downstairs.

1. We turn off both the hot and cold water supply. The old tap is then opened to let out any remaining pressure.
2. The flexible hoses are disconnected from the angle valves or wall outlets. A container goes underneath — there is always some water left in the lines.
3. The fixing nut under the basin is undone. On older taps it is often stuck fast — we remove it carefully so the ceramic does not crack.
4. The old tap is taken out and the mounting hole is cleaned from limescale and old sealant.
5. The new mixer is fitted: gasket seated properly, fixing stud tightened from below, hoses connected. If the supplied hoses are too short, we install longer ones.
6. The water is turned back on and every joint is checked for leaks. We let the pressure come up fully and inspect each connection.
7. We test the lever movement, valve operation, and pop-up waste (if present). Before leaving, we clean the area up.

Common DIY mistakes

• Not turning the water off fully — loosening a hose while the supply is still on sends water all over the place.
• Over-tightening the fixing nut — the basin cracks. Ceramic does not handle too much force.
• Using old hoses with a new tap — the rubber washers inside have gone hard and will start seeping at the joints.
• Not checking the mounting-hole diameter — the new tap either does not fit or sits loose in a hole that is too big.
• Skipping PTFE tape or thread sealant — a drip shows up within days.
• Installing the tap without the base gasket — water gets under the body and damages the vanity unit.
• Forgetting to empty residual water — disconnecting hoses floods the cupboard below.

What to prepare before the visit

• Buy the new mixer tap — check the box contains fixings, gaskets, and hoses that are long enough.
• Make sure the isolation valves under the basin work — try closing and opening them in advance.
• Clear out the space under the washbasin — remove cleaning products, buckets, and bowls.
• If there is a closed vanity unit, make sure there is access to the pipework from below.
• Keep a cloth and a container ready for any leftover water.
• Decide whether the flexible hoses should be changed — if they are more than five years old, replacing them makes sense.
• Check that the tap matches your basin (single-hole or three-hole configuration).
• If there are no individual shut-off valves in the flat, tell us in advance so we can arrange for the riser to be closed through the building management.

A real case from Warsaw

We were called out to a flat in Mokotow. The owner had bought a new single-lever Grohe mixer to replace an old twin-handle tap that had been leaking from under the handles for six months. Under the basin there was a vanity unit with very limited access, and the supply lines were rigid copper — original from the 1990s. We shut off the water, cut out the old copper pipes, installed angle valves, and fitted new stainless-steel braided hoses. The new mixer was put in, we tested it — not one drip. While we were there, we also changed the waste trap because the old plastic one had already cracked. The whole job took a little over an hour. The owner had kept a towel under the sink for half a year, and we sorted the whole thing in one visit.

Frequently asked questions

Can the old tap be repaired instead of replaced?

Yes, if the issue is only the cartridge or a washer. But if the body is corroded, the thread is damaged, or the model is no longer made, installing a new tap is easier and costs less.

Single-lever or twin-handle — which is better?

A single-lever mixer is handier for everyday use and simpler to service — one cartridge instead of two valve heads. Twin-handle taps are usually picked for their appearance in classic-style bathrooms.

Should the hoses be replaced at the same time?

If they are more than five to seven years old, yes. The rubber inside gets old and loses flexibility even if the outer braid still looks fine.

How long does replacement take?

A simple swap takes 40 to 60 minutes. If the hoses, valves, or trap also need to be changed, allow up to ninety minutes.

Does the technician clean up afterwards?

Yes, we leave the work area clean and tidy. We can also take away the old tap and packaging — waste removal is charged separately.

What if it leaks after the replacement?

We pressure-test every connection before we leave. If anything leaks because of our work, we will return and put it right.

Book your tap replacement

We cover all of Warsaw — from Praga to Wlochy. We come with a full set of tools and connection materials. You provide the tap; we remove the old one and install the new one properly. Call or message us and we will set up a time that suits you.