Below you can find the most frequently asked questions. Do you have any questions left? Please send a message or give us a call. Contact us.


This depends on several factors, like what you want to achieve with the Blue, but also the available height for your installation.

The Blue is available in our webshop.

The standard warranty period is 5 years for normal private use. This can be extended to 8 years.

The system is  created in such a way it can be used in virtually any situation, in new constructions as well as renovation projects.

The WWHR pipes aren’t isolated to ensure the water inside  of the system  is able to cool down after a shower. This way, the rules and regulations regarding legionella prevention are met.

Using a pump will definitely use some energy. When developing the Blue, extra care was given to have a lowest energy consumption as possible, which is about 32 Watt. The energy used for the pump amounts to less than 0.01% of the energy saved.

If, for whatever reason, the pump fails to work, only the heat recovery will seize. You will still be able to use the shower. Access water will drain away through the drain’s overflow.

Using soap is no problem whatsoever. All soap residue is pumped away with the wastewater and won’t affect the system. The pump used is specifically designed to handle wastewater from showers and has been used in similar situations for over 15 years.

The system is almost completely self-cleaning. Naturally, the bathroom itself will need to be kept clean, but the Blue requires no extra cleaning.


Hamwells is the developer and manufacturer of the Blue and doesn't install the systems. However, the system is specifically designed in such a way any plumber, tradesperson or bathroom specialist should be able to install it. Download the installation manual here.

The Blue uses WWHR pipes which need to be installed vertically and are not suited for horizontal placement.

Building the Blue in isn’t a requirement. In a lot of cases it is possible to install the Blue into a shaft or technical room near the bathroom, but having the Blue built-in to your bathroom is possible as well.

As long as your hot water installation is working properly this won’t be necessary.

Because the Blue systems make use of the residual energy in the wastewater, it does not matter how the hot water is heated.

Technical specifications

That depends on the version you choose:
Blue 12 - 38x15x128cm
Blue 16 - 38x15x168cm
Blue 21 - 38x15x208,5cm
Blue HE - 38x15x208,5cm
Download the technical specifications here.

This depends on the WWHR pipes used. Download the technical specifications here.

The Blue includes  the WWHR pipe(s), frame, pump, sensor and power supply.


The Blue systems can be shipped to any location. In several countries, we have a network of partners and distributors. We are constantly looking for partners who want to act as distributors on a regional or national level.

Currently we manufacture our systems per order. Generally, our production schedule is quite busy and delivery time will be about 6-8 weeks.

Shipping costs depend on the system and destination. Enter your order into our webshop, and shipping costs will be calculated for your specific situation.

Extra info

Curious about the Blue’s possibilities?

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