Technical FAQs | Hansgrohe United Kingdom

Frequently Asked Questions

The people at Hansgrohe are the shower experts. As such, our customer service and technical support team offer helpful advice and answer hundreds of questions every day. For every question, there is an answer—sometimes, an answer creates more questions. This is why we have compiled this Frequently Asked Questions forum. We hope that you find the answer to your question. We also encourage you to contact us if you have a question you feel should be answered here.

There is a trouble shooting section at the bottom of this page.

How can I identify my water system?

Water Systems

The type of shower you choose and its performance will be influenced by your water system. For example, if you have a gravity fed system and want to install a Hangrohe shower, you might also need to consider fitting a pump to boost flow and pressure or choose one of our products that operate at 0.1bar. However, if you have a mains fed water system, you will not be able to add a pump to increase pressure.

There's a product to suit everyone, but taking time to identify your water system now can save a lot of time in the future. Click here to identify your water system.

How should I clean my Hansgrohe products?

We recommend that all brassware should be cleaned using only a soft cloth and washing up liquid or vegetable based proprietary cleaning products. Do not use abrasive cleaners.

Do I need a pump to use Hansgrohe products?

Not necessarily. Hansgrohe have product for pressures ranging from 0.1 – 5.0 bar.

Will Hansgrohe products work on mains pressure?

Yes.

Will Hansgrohe products work with combination boilers (sometimes called "Combi's")?

Yes, subject to boiler modulation, mains pressure and KW/Btu output.

Can a pump be fitted to mains fed systems to increase poor pressure?

No!

What size hot water cylinder should I use?

This should be sized to accommodate the household showering requirements. Typically a 450 x 1050 cylinder will give 2-3 showers. The bigger the household or the frequency of showering the bigger the cylinder size.

What is negative head?

This refers to situations where the outlet is higher than the bottom of the cold-water storage tank or where there is insufficient “head” of water to activate a pump. A negative head pump will work in all situations and is sometimes called “Universal”.

What is positive head?

This generally refers to an outlet that is sufficiently below the bottom of the cold-water storage tank to activate a pump (normally 1 metre). It is sometimes called “Standard”.

How can I check to see if there is air in a pumped system?

Turn the shower to full hot and get a glass of water and put the vent pipe in to a glass. Then turn the shower on and if water is sucked out of the glass there is air in the system.

What pressure do I need?

Ideal pressure for a majority of Hansgrohe product is from 2 – 3 bar. However we have a range of product available from 0.1 bar.

Which way around does the iBox fit?

Universal – However hot and cold inlets must be opposite ideally hot – left, cold – right.

Is the iBox fitted with NRVs (Non Return Valves)?

No. NRVs are fitted into the finish set control body of thermostatic mixers only.

What is the white plug for on the iBox?

This is to prevent dirt being flushed out through the bath spout and blocking the aerator.

What is the size of your basin mixer tails?

10mm compression fit or 3/8” female thread.

Can the iBox flushing plate be left in place with the water supply left on?

Yes

What are the flow rates of our showers?

See Technical data for individual product.

Trouble shooting

Trouble shooting pumped shower systems

If the flow rate is poor, then please investigate the following things:

Check power supply to pump
Check isolation valves are fully open
Check filters in the pump
Check hot water temperature (max 65 degrees)
Check supply from hot water cylinder falls to pump to prevents air ingress
Check supply from cold water storage tank fall to pump to prevent air ingress
Pipe work to pump should be 22mm
Cold water storage tank supply to hot water cylinder should be min of 28mm
Check non return valves are opening and closing correctly

If you are experiencing temperature fluctuations please investigate the following things:

Check hot water temperature (max 65 degrees)
Check hot and cold supplies are installed correctly (hot left, cold right)
Check system for air ingress
Check filters for debris

Trouble shooting unpumped shower systems

If you are experiencing poor flow rates then please investigate the following:

Check to see if filters are blocked
Check to see if there is debris in the pipe work
Check water and flow pressures
Check hot water temperature (max 65 degrees)
Check isolation valves are fully open
Check thermostatic cartridge for debris
Check non return valves are opening and closing correctly

If you are experiencing temperature fluctuations then please investigate the following:

Check hot water temperature (max 65 degrees)
Check hot and cold supplies are installed correctly (hot left, cold right)
Check system has equal pressures & flow rate
Check system for air ingress
Check filters for debris
Check thermostatic cartridge for debris

Trouble shooting mixer taps

If you are experiencing poor flow rate then please investigate the following things:

Check isolation valves are fully open
Check to see if the aerator is blocked
Check to see if there is debris in the pipe work
Check water and flow pressures
Check hot water temperature (max 65 degrees)
Check mixer is converted to low pressure or not

For pull out sprays check the following:
Check filter in spray head
Check non return valve in spray head
Check aerator