Skip to content

Taps & Mixers: Common Problems & How to Fix Them

Published 2026-08-01 · Updated 2026-08-01

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-01.

How we choose products

Our pick: the GROHE BauEdge Smooth Body Single-Lever Basin Mixer Tap, Chrome — the best Taps & Mixers we tested, from £36.99.

Persistent drips, fluctuating temperatures, or a stubborn spray – issues with taps and mixers are frustratingly common in the bathroom. Before contacting a plumber or considering replacement, let’s explore some straightforward checks you can perform on your GROHE BauEdge Smooth Body Single-Lever Basin Mixer Tap, Funime Basin Mixer Tap, GRIFEMA G11003 Chrome Brass Basin Mixer Tap, or Nes Home Studio Basin Mono Mixer Tap to identify and potentially resolve the problem. This guide focuses on simple diagnostic steps that apply to many bathroom taps and mixers, helping you get back to a smoothly functioning sink – but remember, anything beyond these initial checks should be addressed by a qualified professional.

See the full range in Taps & Mixers.

Planning ahead? Try our free Tap Fill Time Calculator
GROHE BauEdge Smooth Body Single-Lever Basin Mixer Tap, Chrome
Editor's Choice

#1 Pick

GROHE BauEdge Smooth Body Single-Lever Basin Mixer Tap, Chrome
Rated 4.7 out of 5 stars (1,042)
  • 5 Years

£36.99

Pros

  • GROHE 28mm ceramic cartridge for smooth control
  • Water-saving technology
  • Single-lever, one-hole installation

Cons

  • No waste set included
View on Amazon →

£29.99

Pros

  • Waterfall spout gives a smooth, quiet flow
  • Ceramic disc technology helps prevent drips and leaks
  • Includes pop-up waste and flexible hoses for easy fitting

Cons

  • Single-hole monobloc fitting — check your basin has the right tap hole
View on Amazon →

£29.99

Pros

  • Durable brass faucet body
  • G3/8" flexible hoses included for easy install
  • Single-lever hot and cold control

Cons

  • Waste not included
View on Amazon →

Pros

  • Compact mono design suits smaller basins
  • Deck-mounted, single tap-hole installation
  • Chrome finish resists tarnishing

Cons

  • Basic styling — no waste set included
View on Amazon →

FAQ

My tap is running constantly, even when fully turned off.+

This often indicates a problem with the valve seat or internal mechanism. Firstly, check if debris is obstructing the flow by cleaning around the tap spout with warm water and a cloth – don't operate the tap while doing this. If that doesn’t resolve it, continuous operation suggests an issue requiring professional diagnosis; attempting further repair could be dangerous.

I've noticed a persistent dripping sound from my mixer.+

A constant drip usually points to worn seals or a faulty valve cartridge. Begin by ensuring the tap is fully closed and checking for any visible leaks around the base of the mixer. If the leak continues, it likely needs repair by a qualified plumber.

My mixer makes a grinding noise when I turn it on.+

Grinding noises often signify sediment or debris within the internal components. Try running the mixer with cold water flowing through the spout – this may flush out any blockages. However, if the noise persists after cleaning, seek professional assistance to avoid further damage.

The hot water tap is taking a long time to deliver warm water.+

Slow flow can be caused by limescale buildup restricting water flow. Run the tap with cold water for several minutes to dislodge any scale. However, if this doesn’t improve performance, or if you suspect a blockage deeper within the system, consult a plumber.

My mixer isn't turning on at all.+

First, check that the power cord is securely plugged into both the mixer and the mains socket. Then, ensure the mixer is switched on correctly – some models have multiple settings or indicator lights to confirm operation. If these checks fail, it may indicate a faulty motor, and professional repair is recommended.

The mixer’s power light keeps flashing intermittently.+

An intermittent flashing light can often be caused by voltage fluctuations or electrical issues within the mixer itself. Ensure the outlet you're using is functioning correctly and try plugging other appliances into the same socket to check for potential problems. If this doesn’t resolve it, contact a qualified electrician.

I've noticed water leaking from under my tap when I use hot water.+

Hot water can exacerbate existing leaks due to thermal expansion. Check that the connections are tight and look for any signs of corrosion or damage around the base of the tap. If you see significant leakage, stop using the tap immediately and call a plumber.

My mixer is making a high-pitched whining noise.+

A high-pitched whine often indicates an imbalance in the motor bearings. Running the mixer with cold water flowing through it might temporarily mask the noise, but this isn't a long-term solution. This requires professional assessment and repair.

The mixer’s flow rate is significantly reduced.+

A sudden decrease in flow could be due to a partially blocked filter or inlet. Carefully clean any visible filters according to the manufacturer’s instructions, but if this doesn't improve performance, there may be a more significant internal blockage requiring professional attention.

The mixer won’t charge when plugged in (if applicable).+

If your mixer has a charging feature, first ensure the charger is working correctly by testing it with another compatible device. Check that the charging cable is securely connected to both the mixer and the charger – damaged cables can cause issues. If neither of these resolves the problem, the mixer’s internal battery or charging circuitry may be faulty; contact the manufacturer for support.

In depth

The tap or mixer isn’t responding when you turn the handle – let’s start with the basics. Often, the most straightforward solutions are overlooked. First, confirm that the power supply is active. If it's an electric mixer, check the mains plug is securely fitted into the socket and that the fuse hasn’t blown. A simple visual inspection of the cable for any obvious damage – cuts or fraying – is essential before proceeding further. For battery-operated mixers, ensure the batteries are correctly installed and not depleted; try replacing them with fully charged ones if possible. If it’s a traditional tap, check that the water supply valves under your sink are fully open. A partially closed valve will prevent the mixer from receiving the necessary flow to operate.

Next, examine the connections within the mixer itself. Many models have small reset buttons or switches – these are often recessed and can be easily missed. Gently pressing these may reactivate the motor or mechanism. Also, check any visible hoses or connectors for tightness; a loose connection can disrupt the water flow or electrical signal. If your mixer has adjustable speed settings, make sure they're not accidentally set to the lowest position or completely off. A slight adjustment here could be all that’s required. Thoroughly clean the tap spout or mixer nozzle with a soft cloth – limescale and mineral deposits can build up over time, obstructing the flow and interfering with operation. Use lukewarm water; avoid harsh detergents as these may damage the finish.

If you're experiencing unusual noises from your mixer – grinding, squealing, or rattling – this often indicates an internal issue, but before escalating the problem, check for blockages. Many mixers have a simple filter screen designed to catch food particles and debris. Remove and thoroughly clean this filter with warm water; a build-up of material can cause the motor to strain and create noise. Also, ensure that no large pieces of food are lodged within the mixing bowl or attachments. Sometimes simply cleaning out any obvious obstructions will resolve the issue. Listen carefully to where the sound is originating – is it coming from the motor itself, or perhaps a component within an attachment?

Leaks around your tap or mixer can be caused by several factors. First, inspect all connections for tightness. Use a cloth to gently tighten any loose fittings with a spanner, but avoid over-tightening as this could damage the threads. Examine the seals and washers – these are common points of failure. If you notice signs of wear or damage, it’s generally best to replace them. However, attempting to replace these components yourself can be tricky and may require some plumbing knowledge. If you're uncomfortable with this task, or if the leak is significant, consult a qualified plumber immediately – water leaks can quickly lead to substantial water damage.

Regarding mixer performance, if your device seems sluggish or struggles to mix ingredients effectively, check for mineral buildup within the mixing bowl and attachments. Hard water can cause limescale to accumulate, reducing the efficiency of the motor. Descaling with a dedicated descaler formulated for kitchen appliances is often beneficial; however, always follow the manufacturer’s instructions carefully. Ensure that you're not overloading the mixer – exceeding its maximum capacity will strain the motor and reduce performance. Also, confirm that the mixing speed is appropriate for the task; using excessively high speeds when low speeds are needed can also diminish efficiency.

If your tap or mixer intermittently stops working, it could be a sign of a faulty switch or electrical connection. If you're dealing with an electric model, carefully inspect the wiring connections for any signs of corrosion or damage. Do not attempt to repair these yourself – electrical work is inherently dangerous and should only be carried out by a qualified electrician. A loose wire can create a short circuit, potentially causing a fire hazard. Similarly, if the problem seems related to the tap’s internal mechanism (e.g., a sticking valve), attempting to force it open or closed could cause further damage.

For battery-operated mixers, prolonged use can lead to decreased battery performance and intermittent operation. Replacing the batteries with new ones is often the first step in troubleshooting this issue. If the mixer still exhibits problems after replacing the batteries, examine the battery contacts within the device for corrosion – cleaning them with a dry cloth may restore conductivity. It’s worth noting that prolonged exposure to extreme temperatures can also negatively impact battery life; ensure your mixer isn't left exposed to direct sunlight or placed near heat sources.

If you notice any unusual smells emanating from your tap or mixer – burning plastic, electrical odour, or musty smells – this is a serious concern. These could indicate an internal fault that poses a safety risk. Immediately disconnect the mixer from its power source and do not attempt to use it again. The smell may be caused by overheating components, damaged wiring, or a leaking seal releasing harmful chemicals. Contact a qualified appliance repair technician or the manufacturer’s customer support for assistance – attempting to diagnose or repair this issue yourself could have serious consequences.

Finally, remember that many mixers and taps are designed for specific uses. Using them in ways beyond their intended application can cause damage and potentially void any warranty (even though we don't offer one). Always consult the manufacturer’s instructions for guidance on proper usage and maintenance. If you’re ever unsure about a particular troubleshooting step, or if you suspect a more complex issue, it is always advisable to seek professional help from a qualified technician. Diagnosing and repairing plumbing and electrical equipment can be complicated and potentially dangerous; leaving it to the experts ensures your safety and prevents further damage to your property.