GROHE Blue® FAQ

Frequently Asked Questions

Here you find the most common questions about GROHE Blue®. If you can't find the answers to your questions, please contact us.

Can cold water be chilled?

Yes, there is a GROHE Blue® Chilled and Sparkling version.

GROHE Blue® Chilled & Sparkling

Does GROHE offer sparkling water?

Yes, there is a GROHE Blue® Chilled and Sparkling version.

GROHE Blue® Chilled and Sparkling

When should the filter be changed?

The LED display in the fitting’s left handle indicates the filter capacity:

  • Continuous blue light - more than 10% filter capacity
  • Flashing blue light - less than 10% filter capacity > order a filter cartridge
  • Rapidly flashing orange light - less than 1% filter capacity > filter cartridge must be changed

Which filters are available?

GROHE Blue® systems also offer you a choice of filter size as well as three filter type options, meaning you can get perfect drinking water whether you live in a hard or soft water area.

There are 3 standard filter sizes available:

  • S-Size (40404001)
  • M-Size (40430001)
  • L-Size (40412001)

GROHE Blue® activated carbon filter (40 547 001):
Ideal for soft water areas, the activated carbon filter improves the taste by removing chlorine and metal substances but does not filter out carbonate hardness.

GROHE Blue® magnesium+ filter (40 691 001):
Enjoy additional health benefits by choosing the Magnesium+ filter model. It uses our five-step filtration process and it also adds magnesium to the water. Something of a tea and coffee connoisseur? Then this is the option for you, with the added magnesium delivering the best-tasting tea and coffee possible.

GROHE Blue® Filters

Are the different sizes of filter interchangeable?

Yes, all filters have the same connections.

GROHE Blue® Filters

Does the water need to be isolated when changing the filter?

No, there are isolating valves built-in to the filter head. When the filter is removed it automatically shuts off the water.

What are the differences and main advantages of GROHE Blue® filters compared to other brands?

The main benefit is that we have an Ion exchanger and that specially reduces carbonate hardness and binds heavy metal ions such as lead and copper. Most of the competitors filters are only an active carbon filter taking out chloride.

Does the filtered water come into contact with non-filtered water?

No, there are separate waterways inside the tap. The filtererd water outlet is slighly longer at the spout guaranteeing no cross contamination.

Is power required for the tap to work?

Power is required for the electronics that control the filter indicator on the GROHE Blue® filter handle. If power is shut off then the tap will still work and provide filtered water for the life of the filter.

Is the filter recyclable?

Yes, the filter can be disposed of as normal plastics. Currently we do not refurbish the filter for re-use.

Where should the electronic pack be installed?

The electronic pack should be installed in an area under the sink with minimal obstruction. Obstruction of the sensor on the electronic pack can affect the accuracy of the filter life indicator.

What finishes are available for GROHE Blue®?

Chrome (product number ending with 000 or 001) & SuperSteel (product number ending with DC0 or DC1).

Are the carafes available to purchase?

Yes, carafes (40 405 000) can be purchased in the GROHE webshop.

GROHE webshop

Can the current GROHE Blue® system also be retrofitted with the cooled/carbonated version in the future?

Yes, the system can be retrofitted. Please call GROHE on 0871 200 3414.

What functions does the GROHE Blue® Chilled & Sparkling have?

The GROHE Blue® handle provides the following means of dispensing water:

  • Setting 1 - cooled still water
  • Setting 2 - medium sparkling water
  • Setting 3 - sparkling water
GROHE Blue® Chilled & Sparkling

What does the GROHE Blue® Pure Starter Kit contain?

The Starter Kit contains the tap, the filter, a filter head, and a glass carafe.

What does the GROHE Blue® Chilled & Sparkling Starter Kit contain?

The Starter Kit contains:

  • tap
  • filter head
  • carbonisator box (cooling unit)
  • 25g CO2 bottle
  • S-Size filter
  • Pressure reducing valve
  • Two adapters for 425g or 2kg CO2 bottle

What are the capacities of the different CO2 bottles?

  • 425g bottle = up to 75 liters of sparkling water (Starter set: 40 422 000 / Refill: 40 687 000)
  • 2kg bottle = up to 350 of sparkling water (Starter set: 40 423 000 / Refill: 40 424 000)

Can the water pressure burst the filter?

Yes. The filter has approval for up to 8.6 bar. A pressure-reducing valve must be used above 5 bar.

How does the filter work?

GROHE Blue® filters use a five-step filtration process to remove even the smallest particles from tap water, while leaving behind all the important minerals that benefit your health:

  • Pre-filtration: Filters out coarse particles of sand and dirt.
  • Activated carbon pre-filter: Removes chlorine, certain organic compounds including insecticides and pesticides.
  • High-performance ion exchanger: Removes limescale and metal substances
  • Activated carbon filtration: Bypass water is filtered and purified while keeping essential minerals.
  • Fine filtration: Captures even the finest remaining particles.

How does the fitting detect that 600 liters have actually flowed through the filter given that local flow rate conditions can vary?

The electronics are adapted to the local flow rate conditions during installation. The electronics unit is adjusted as per the Installation instructions with the help of the GROHE Blue® carafe or a 1-litre measuring cup.

Can I adapt the filter to different water hardnesses?

Yes, the filter can be adapted to different water hardnesses. There is an adjusting screw on the top of the filter head. Contact your local water supplier for the necessary data.

How long can the unused filter be stored for?

The filter has no expiration date, provided the packaging is not opened.

What happens if I do not use the filter for an extended period of time?

GROHE recommends not leaving the filter system out of service for extended periods of time. If the GROHE Blue® filter system is not used for a few days (2-3 days), the filter system must be rinsed with at least 4 liters of water. The filter system must be rinsed with at least 20 liters of water or replaced in its entirety after stagnation times of more than 4 weeks.

What happens when the filter is full? Will water still come out?

Yes. When the filter is depleted, it will no longer be able to purify the water but will allow normal tap water (drinking water) to pass through it.

Can I also use commercially available filters in the system?

No, the filter is specific to GROHE.

How high is the flow rate?

Flow rate at 3 bar flow pressure: fitting approx. 9 l/min, filter cartridge approx. 4 l/min.

Why should I drink GROHE Blue® water? I keep hearing that tap water is top quality. So why should I purchase GROHE Blue®?

GROHE Blue® purifies the already good quality tap water. Substances which are important for the body such as calcium and magnesium are retained, while the lime content is reduced and elements which affect taste such as heavy metals (iron, copper), chlorine and organic substances are filtered out.

What about minerals? Will I get enough minerals by using GROHE Blue®?

The GROHE Blue® system does not change the mineral content of your tap water. Contact your local water supplier for details about the mineral content.

Enjoy additional health benefits by choosing the Magnesium+ filter (40 691 001). It uses our five-step filtration process and it also adds magnesium to the water. Something of a tea and coffee connoisseur? Then this is the option for you, with the added magnesium delivering the best-tasting tea and coffee possible.

Where can I purchase GROHE Blue®?

GROHE Blue® can be purchased from specialist bathroom or kitchen retailers.

Find a GROHE Partner

Are GROHE Blue® glasses also available?

Yes. The Article number is 40437000. You can puchase a set of 6 glasses in the GROHE webshop.

GROHE webshop

What are the advantages of GROHE Blue® for the consumer?

  • Fresh taste – Water simply tastes better when it is fresh – ideally direct from the spring. This taste can now be experienced at home with GROHE Blue®. A blind test proved that GROHE Blue® water tastes at least as good as the leading brands of mineral water and is even better in terms of freshness of taste.
  • Fresh and convenient – GROHE Blue® produces a high-quality water which bubbles out of your own home spring in an instant. For you, this means no more carrying home bottles of water.
  • Protection of the environment – The production and transport of bottled mineral water is harmful to the environment. GROHE Blue® makes both unnecessary.

Can I vary the supply of bubbles?

Yes. The GROHE Blue® handle provides the following means of dispensing water:

  • Setting 1 - cooled still water
  • Setting 2 - medium sparkling water
  • Setting 3 - sparkling water

Where can I purchase a refill of the C02 bottles?

You can buy a refill of four 425g CO2 bottles (40 687 000) in the GROHE webshop.

Please contact GROHE for a refill of a 2kg CO2 bottle (40 424 000).

GROHE webshop

Where do I obtain larger C02 bottles?

A 425g bottle is delivered with your starter kit. To upgrade to a 2kg bottle which provides up to 350 liters of sparkling water, contact GROHE.

Are the CO2 bottles safe for me and my family?

The 425g CO2 bottle you can store everywhere.

GROHE recommends that you store the 2kg bottle only in rooms with more than 13 m².

Can I get an installer to connect my CO2 bottle?

You can do it yourself or contact GROHE to get a recommendation for an installer: 0871 200 3414

Where is the filter installed?

It is installed underneath the tap (e.g. invisibly under the sink). Either directly at the cooler or in another easily accessible location near the cooler.

Can I adapt the filter to different water hardnesses?

Yes, the filter can be adapted to different water hardnesses. There is an adjusting screw on the top of the filter head. Contact your local water supplier for the necessary data.

What does the GROHE Blue® filter remove?

The filter cartridge reduces the water hardness of the drinking water as a function of the adjustable hardness of the water. Furthermore the cartridge binds heavy-metal ions such as lead, copper and cadmium. It also reduces cloudiness as well as organic and taste-impairing constituents and chlorine residues. Contact your drinking water supplier for water analyses.

How long does the small filter last?

Service life approx. 600 liters (10° dH) or max. 12 months. The litre amount depends on the carbonate hardness of the water, not the overall hardness.

What happens when the filter is full? Will water still come out?

Yes. When the filter is depleted, it will no longer be able to purify the water but will allow normal tap water (drinking water) to pass through it.

Will I also be able to purchase replacement filters in the future?

Yes. We provide an availability guarantee for the filter.

How do I dispose of the filter?

The filter can be disposed in normal domestic waste. The activated carbon it contains improves its combustibility in incinerating plants.

Do I need to call an installer to replace the filter?

No, the filter can be easily replaced in four short steps:

  • Step 1: Unscrew the filter from the filter head
  • Step 2: Press the left button twice to reset the digital display
  • Step 3: Screw the new filter into the filter head
  • Step 4: When the display shows 99% filter capacity GROHE Blue® is ready to go again
Learn more

What prerequisites must be in place in order to use the tap?

The tap can be operated with pressurised storage heaters as well as thermally and hydraulically controlled instantaneous heaters. It cannot be operated with unpressurised storage heaters (displacement water heaters).

How high is the flow rate?

Flow rate at 3 bar flow pressure: fitting approx. 9 l/min, filter cartridge approx. 4 l/min.

Can I draw water even in the event of a power failure?

Only normal water can be drawn in the event of a power failure. GROHE Blue® water cannot be drawn.

How does the mousseur work?

It is a special two-piece flow straightener which keeps the water channels of the tap water and the filtered GROHE Blue® water separate.

Is there a warranty?

Yes, 5 years from date of purchase.

How cold can I make the water?

The water can be cooled down as far as 4°C depending on the ambient temperature.

Can I also use GROHE Blue® water in other kitchen appliances (e.g. coffee machines)?

Yes, it is ideally suited for kettles, etc. since the reduced lime content of GROHE Blue® water protects the appliances.

What about making tea?

GROHE Blue® is also well suited for this. Despite the reduced lime content, there is still enough lime in GROHE Blue® water to make drinking tea and coffee enjoyable. With this method of beverage preparation, lime acts as a flavour carrier and should never be filtered out of the water completely.

Does GROHE Blue® not filter the essential calcium from the drinking water?

No, GROHE Blue® only reduces the carbonate hardness of the water, all of the essential minerals remain in the drinking water. Only substances which are of no importance for humans are removed from the water, which is why we talk about purification.

Does the GROHE Blue® water really taste so great?

Yes. A representative group was given water including GROHE Blue® and leading brands of mineral water for a blind tasting. The result was that GROHE Blue® water tastes as good as the mineral waters and was even better in terms of freshness of taste.

The cooler of GROHE Blue® Chilled & Sparkling is making a lot of noise, what can I do?

Please buy a piece of foam/rubber mat to reduce the sound which is being produced by the cooler, make also sure that the cooler stays straight!

Is GROHE Blue® suitable for baby food?

That depends on the quality of the drinking water. In principle, however, it is recommended to only use special shop-bought water for baby food in the baby’s first year.

GROHE BLUE® Benefits

Find out the ways in which GROHE Blue® brings benefits to your home regarding:

  • taste
  • health
  • convenience
  • sustainability
Read more

GROHE BLUE® Filters

GROHE Blue® filters use a five-step filtration process to remove even smallest particles from tap water, while leaving behind all the important minerals.

GROHE Blue® systems offer you a choice of filter size as well as three filter type options, meaning you can get perfect drinking water wether you live in a hard or soft water area.

Read more

GROHE Blue® Chilled & Sparkling

GROHE Blue® Chilled & Sparkling

Do you like your chilled drinking water still, medium or sparkling? The choice is all yours. First the water is filtered to remove impurities. Then it is chilled to create that mountain-fresh taste. And a simple twist of the handle lets you choose the carbonation.

Read more

GROHE Blue® Pure

GROHE Blue® Pure

For people who prefer still water only, GROHE Blue® Pure is the ultimate solution. Better tasting than tap water, better for the environment than bottled water, and much more convenient for you, GROHE Blue® Pure offers drinking water of ultimate purity.

Read more

GROHE Blue® Shop

Save money with GROHE Blue®: Great-tasting GROHE Blue® costs just one fifth of the price of premium waters. You reduce your energy consumption and avoid huge quantities of plastic waste!

Buy now!

GROHE webshop