Grohe Tap Problems (Eurostyle, Eurosmart, Essence)
Check the steps below first — if you're not confident, get it fixed safely today.
Post a job — we'll find you an engineer →Grohe taps often have a flow restrictor fitted to comply with German water efficiency standards. This is sometimes mistaken for a fault. Check this before replacing a cartridge.
Grohe taps are built to last, but the ceramic cartridge inside — which controls water flow and temperature — can eventually wear out after years of daily use. You'll notice this as a stiff handle, reduced flow, or a persistent drip that won't stop even when the tap is fully closed. The good news is that cartridge replacement is a straightforward job for most homeowners and costs far less than replacing the entire tap. This guide walks you through identifying your Grohe model, sourcing the correct cartridge, and fitting it yourself in under an hour. If you're uncomfortable working with water systems or the cartridge won't budge, it's worth calling a qualified plumber rather than risking damage to the tap body.
Not sure if this matches your problem?
Use our interactive tool — answer a few questions and get a personalised diagnosis.
Most likely cause & what to check
Identify your Grohe tap model — the model name is usually on the underside of the spout or on the original packaging. Grohe Eurostyle, Eurosmart, and Essence series all use ceramic disc cartridges, but the cartridge size and part number varies. For Eurostyle and Eurosmart, Grohe commonly uses the 46 375 000 or 46 363 000 cartridges depending on the basin or kitchen variant. The Essence range typically takes the 46 363 000. Check the Grohe website (grohe.com/en_gb) or call Grohe UK on 0870 242 1888 for your specific model's spare part number.
Turn off the water supply at the isolation valves under the basin or sink, or at the stopcock. Open the tap fully to release any residual pressure. On Grohe single-lever taps, look for a small plastic plug on the front or top of the handle — prise this off with a flathead screwdriver to expose the fixing screw. This is usually a 2.5mm or 3mm Allen key bolt. Undo it and lift the handle off vertically.
With the handle removed, you will see the cartridge retaining nut — a hexagonal plastic or brass collar. On most Grohe mixers this unscrews anticlockwise by hand or with an adjustable spanner (protect the chrome with a cloth). Some models have a circlip instead of a nut; remove this with circlip pliers. Grohe cartridges are colour-coded at the top: red or orange indicates a hot-side cartridge, blue for cold. On a mixer tap you will have a single cartridge that controls both.
Pull the cartridge straight out — it should slide free, but if it is seized you can use a cartridge puller tool (available from Screwfix or Plumb Center for around £8–12) to grip and withdraw it without damaging the tap body. Note the orientation of the cartridge before removal; there is usually a flat or notch that must align on refitting. Take the old cartridge to a merchant such as Plumb Center or Toolstation, or order directly from Grohe Spare Parts (grohe.com/en_gb/spare-parts) using your part number.
Insert the new cartridge in the same orientation, ensuring any alignment tabs click into the corresponding slots in the tap body. Refit the retaining nut or circlip and hand-tighten, then a quarter turn with a spanner — do not overtighten or you will crack the plastic. Refit the handle and securing screw. Slowly restore the water supply and check for leaks at the base of the cartridge before replacing the handle cap.
If the tap was stiff before replacement, also check the handle fixing screw was not overtightened, which clamps the handle against the cartridge. On Grohe Essence taps in particular, the handle should move with almost no resistance once the cartridge is correctly seated. If you still have a drip after cartridge replacement, check the O-rings on the cartridge body itself — these are sometimes sold as a separate seal kit (Grohe part 45 499 000) and are worth replacing at the same time.
Not confident doing this yourself?
Post the job and we'll match you with vetted local engineers. Free, no obligation.
🛠 Tools & materials you may need
🔗 Some links above are affiliate links — if you buy through them we earn a small commission at no extra cost to you. This keeps the site free.
Was this guide helpful?
Frequently asked questions
How do I know if my Grohe tap needs a new cartridge?
The most obvious signs are a stiff or stuck handle that's hard to move, water trickling from the spout even when the tap is turned off, or inconsistent temperature control. You may also notice reduced water pressure or the handle suddenly becoming loose and wobbly. Before assuming cartridge failure, check that the handle fixing screw isn't overtightened, as this can mimic these symptoms.
Can I replace the cartridge myself or do I need a plumber?
Cartridge replacement is entirely manageable as a DIY job — you only need basic tools like an Allen key, adjustable spanner, and a flathead screwdriver. The process takes 20–30 minutes once you have the correct spare part. Call a professional if the cartridge is severely seized, the tap shows signs of physical damage, or you're not confident working with water systems.
What's the difference between the Grohe cartridge part numbers?
Grohe uses different cartridge sizes depending on whether the tap is for a basin, kitchen sink, or shower, and whether it's a single-lever mixer or a two-handle design. The 46 375 000 and 46 363 000 are the most common for Eurostyle and Eurosmart ranges, but your specific model may vary. Always check your original packaging or call Grohe UK on 0870 242 1888 to confirm the correct part number before ordering.
Why is my Grohe tap still dripping after I've replaced the cartridge?
The rubber O-rings around the cartridge body may have perished — these are separate from the cartridge itself and can be replaced as a seal kit for a few pounds. Alternatively, the retaining nut may be undertightened, allowing water to seep past; try a quarter-turn tighter with a spanner, protecting the chrome with a cloth. If the problem persists, the tap body itself may need professional inspection.