Cascade Heat Pumps - ratiotherm Smart Energy Systems

Cascaded heat pumps for greater performance

The WP Max KK cascade heat pump has a unique design that is unmatched on the market. It can be configured as a brine/water or water/water heat pump. It consists of a base platform and two or three independent heat pump modules with a heating capacity of 15–35 kW, which can be combined in any configuration thanks to their modular design. Thanks to the clever combination of fixed-speed modules with inverter modules, the integrated cascade control can efficiently cover any operating state across a very wide range. The systems can be dismantled and installed in small boiler rooms, making them an interesting option for the renovation of large apartment buildings.

The advantages of cascade heat pumps at a glance:

Numerous performance module combinations possible
Quick addition of service modules
Increased operational reliability and performance flexibility
Achieves very high performance without requiring leak testing

Take advantage of the benefits of a cascade heat pump as an innovative and sustainable energy system for your heating!

Products from the cascade heat pump sector

Our proven cascade heat pumps

WP Max-HiQ KK

Brine/water or water/water heat pump for utilizing high source temperatures

WP Max-LoQ KK

Brine/water heat pump for using low-temperature heat

FAQ: Questions & answers about cascade heat pumps

What does cascade mean in relation to heat pumps?

A cascade connection is an optimized connection between a photovoltaic system and a heat pump or other controllable consumers such as a wallbox.

When do you need a cascade connection?

What is the purpose of a cascade connection? A cascade connection is useful if you have a photovoltaic system on your roof and want to use the solar power both in your household and for your heat pump. After all, the solar system covers part of the heat pump’s electricity requirements.

How much does it cost to install a cascade connection for a heat pump?

A cascade connection for heat pumps, which is often used in combination with photovoltaic systems, can reduce electricity costs by measuring the heat pump electricity separately and covering it with solar power if necessary. The one-time costs for installing a cascade connection, including meter conversion and any additional meter fees, are usually between $100 and $1,000. There are also ongoing costs for meter rental, which can amount to between $90 and $150 per year.

What is a cascade system?

A cascade system consists of two independently operated single-stage cooling systems: a lower system that maintains a lower evaporation temperature and generates a cooling effect, and an upper system that operates at a higher evaporation temperature, as shown in the figure.

What does “connected in cascade” mean?

In a cascade connection, two electricity meters are connected in series in the circuit diagram to enable the use of your own PV electricity and inexpensive heat pump electricity. Not all network operators allow cascade connections, and costs are incurred for the installation and annual rental of the second meter.