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How to Fix a Leaky Grohe Kitchen Faucet

How to Fix a Leaky Grohe Kitchen Faucet

Grohe is a famous brand for kitchen faucets which are mostly installed in the hotel restaurants and other large public places, means hence it is essential to repair it immediately when there is leakage of water. Even though these Grohe kitchen faucets fail easily but still you need to check the parts that could lead to leakage such as; O-rings, valve seats and seats, nut packing unit (assemble/disassemble).

The Grohe kitchen faucet is one of the most popular and well-known kitchen faucets in the world. It is a very high-end product and all its components are valuable. If you have recently bought the faucet, you should be aware that not all the parts are from metal.

Determine the location

  • The first thing you need to do is determine the type of leaking. Types of leaking include leaking from the base of the faucet and leaking from under the handle.
  • When your Grohe kitchen faucet has a leak at the base, it will be due to a worn-out O-ring or a damaged cartridge. To replace either of these parts, disassemble the faucet and replace the part that is causing the leak.

Turn off the water supply

  • Turn off the water supply to the faucet.
  • Unscrew and remove the handle.
  • Loosen the decorative cap at the top of the faucet.
  • Remove the screws holding the escutcheon in place and pull off the escutcheon.
  •  Pull out on the cartridge stem until it comes free from its housing, but be careful because it may still be attached to a hose. Using needle-nose pliers, remove the retaining ring that secures the cartridge in place.
  •  Install a new O-ring and reassemble parts in reverse order.

Detach the nozzle

Detach the nozzle. On the older models of faucet, the nozzle is connected to the faucet head by a spring. This spring is held in place by a screw.

  • First unscrew the screw, then detach the nozzle from the head. Remove the cartridge. First, use a wrench to remove the aerator from the top of the faucet nozzle.
  • Then unscrew the bolt at the base of the faucet to remove it. Twist and pull out the cartridge.
  • Replace worn parts. If your leak is caused by any damaged or worn parts, simply replace them with new ones that are available in most hardware stores.

Remove the O-ring

Grohe faucets have a reputation for being well-made, but even the best-made faucet can start leaking. Whether the faucet is new or old, if you notice a leak, it’s important to fix it quickly. A leaking faucet can waste water literally by the gallon, so you want to stop the leak as soon as possible.

  • Turn off the water supply to the leaking Grohe faucet by closing its valves under the sink. If your Grohe faucet has a single lever handle, it’s likely that there is just one supply valve underneath it.
  • Remove the O-ring. Use a flathead screwdriver to remove any retaining screws holding the o-ring in place on the stem from underneath the sink.
  • Then grasp the O-ring with pliers and pull it off the stem.
  • Push back on the stem and pull up on it at the same time to remove it from it slot in the faucet body. The slot is located under the handle on top of your sink. Reach into this space and remove any debris clogging this area of your faucet using needle-nose pliers or tweezers.

Lubricate the seal

  • If the faucet has a cartridge-style valve, apply a drop of non-petroleum-based lubricant onto the O-ring or other seal on the cartridge. Grohe faucets have a ceramic disc valve rather than a cartridge.
  • Replace the O-ring if it is damaged or worn. Reinstall the handle by lining up the pins on the handle with slots in the valve body, then pushing down firmly until you hear it click into place.
  •  If you removed the handle to replace it, insert the handle screw through the hole in the handle and tighten it firmly with a hex wrench to secure it to the cartridge or valve body.

Reattach the o-ring and nozzle

  • Turn on the faucet to check for leaks. If the faucet still leaks, repeat steps 1 and 2 again. If it doesn’t leak, turn off the water supply and reattach the decorative cap. If you have an older Grohe faucet (pre-2007), you may need to contact Grohe’s customer service department for replacement parts.

Flush and test

  • Before you begin, turn off the water supply and remove the handles and spout.
  • To fix leaky Grohe kitchen faucets, consult Grohe’s website for a replacement parts diagram and to order replacement parts. If the faucet is leaking at the base of the spout, you may need a new O-ring or washer.
  •  If you can’t identify the source of leakage after removing the handles, try replacing all seals. Disassemble the faucet in sections and replace seals as you go along.
  • Replace any worn-out or corroded parts with new ones. If a cartridge is damaged or worn out, it will need to be replaced with a new one. Grohe recommends using only genuine Grohe spare parts when repairing its products because they are designed to fit perfectly with other components in your faucet system.
  • Once you’ve installed all of your replacement parts, flush and test your faucet by turning on the water supply and letting it run for a few minutes.


Today, leaky faucets are more common than before. Most of them are cheap imported products which are less durable and highly vulnerable to corrosion and wear and tear. Grohe kitchen faucets, however, have a reputation as commercial grade products with superior durability.

They do cost a little more than the others, but good quality comes with an added price tag. There are many reasons for a faucet to leak, but a thorough under-the-sink inspection will help you determine the problem. Here are the steps to take when diagnosing a leaky Grohe kitchen faucet.