deutschland en Products Heat pumps Air-source Weishaupt outdoor air-to-water heat pumps (WWP L A)

Weishaupt outdoor air-to-water heat pumps (WWP L A)

Weishaupt outdoor air-to-water heat pumps are the ideal solution when space indoors is limited. Available in ratings from 7 to 50 kW.


Weishaupt outdoor air-to-water heat pump Schematic representation of an outdoor air-to-water heat pump Cut-away drawing of an outdoor air-source heat pump

Weishaupt outdoor air-to-water heat pumps are ideal if space indoors is limited. The heat pumps are installed outside. They draw in ambient air, transfer the heat to a refrigerant, and pump it to the required temperature.

Using air as an energy source is uncomplicated: all you need for reliable operation is an electrical socket.

Outstanding energy yield: For every kilowatt of electrical energy consumed a Weishaupt air-to-water heat pump generates three to four times as much heat energy - that is extremely efficient.

Reliable source of heat: Weishaupt outdoor air-to-water heat pumps heat reliably, even in sub-zero temperatures down to -25 °C.

Comfortably quiet operation: Weishaupt heat pumps operate extremely quietly. compressors and fans are barely audible, thanks to their special design and the use of vibration dampers. They operate so quietly they can be installed within 5 m of a neighbouring resisdence.

For cooling too: Since a heat pump works like a a fridge in reverse, with the appropriate accessories it can also be used to actively cool buildings. All accessories - from pumps to room thermostats - are available directly from Weishaupt.

Complete heat supply: The heat pumps can also be used for domestic hot water.

Long service life: High-quality materials, robust constructions, and tried-and-tested technology guarantee many years of reliable service.

Eligible for subsidies: Weishaupt heat pumps are extremely efficient and therefore often eligible for energy subsidies. You can find which subsidies may be available to you in the Weishaupt subsidies database.

Energy efficiency

The familiar efficiency labelling of fridges, washing machines and televisions has now been extended to cover heating equipment. Both individual products and complete heating systems will be given energy efficiency labels.

The thinking: The labelling complies with European Union (EU) directives and is designed to give consumers a basis for comparison and thus to help them make informed decisions when buying heating systems. Consistent, standardised practice will be ensured by the predefined methods of calculation that have been laid down by the EU Commission.

Product label: Every boiler will receive what is known as a product label. This will state the energy efficiency for space and, where applicable, water heating. Other figures – such as sound power levels –  might also be given, depending on the heating system.

System label: If a complete system is being installed, e.g. a boiler with a temperature controller and a DHW cylinder, there will be a system label to show the energy efficiency of that system as a whole. This is usually better, as all the components have been matched to one another and expansions to the system, for example with solar collectors, have been taken into account.

Usefulness: The labels show the energy efficiency as defined by certain standards. However, this shouldn’t be the be-all and end-all when it comes to domestic heating. Many factors influence the energy efficiency and consumption of a heating system: How warm should the house be? How much hot water will be used? Is there underfloor heating? Purchasing decisions should therefore not be made solely on the basis of the energy efficiency label.

SystemEnergy efficiency class*
WWP L 6 AD A++ / A+
WWP L 9 - 18 AD(R) A++ / A++
WWP L 25 - 40 A A++ / A++
WWP L 35 AR A++ / A++
WWP L 60 AD A++ / A++
WWP L 60 ADR A++ / A+

*Per EU Regulation No. 811/2013 seasonal space heating energy efficiency under average climate conditions, low-temperature (35 °C) / high-temperature (55 °C) applications

DHW cylinders

Weishaupt Combi Store: WKS

The Combi Store brings together within a single compact housing all of the components needed to integrate heat pumps with a heating system, thereby considerably reducing the amount of installation work required. It contains a 300-litre DHW cylinder, a 100-litre buffer tank, hydraulic components, circulation pumps, and electrical auxiliary heating. The Combi Store is designed for use with a large number of the Weishaupt heat pumps. (Energy efficiency class: B)


Weishaupt thermal store: WES-A 660/910, version C

Weishaupt thermal stores organise and distribute the heat produced by different energy sources (gas or oil-fired condensing boilers, heat pumps, solar collectors, solid-fuel boilers, or stoves) with an exemplary degree of efficiency. Inlet dampers ensure that the ideal temperature stratification is always maintained within the thermal store. Energy is also drawn off in an economical manner, with solar energy having priority over any other source.

WES 660 A-C

Weishaupt thermal store: WES 200-500 and WES 660/910, versions S and H

A simplified version of the thermal store for heat pumps without solar heating support. It has connections to the heating system (heating unit or heat pump) and additionally to a solid-fuel boiler, fireplace, or stove. Version S additionally offers solar DHW heating. (Energy efficiency class WES 200-300: B,  Energy efficiency class WES 500: C)

Weishaupt WES 200-500 Eco

The "Eco"-version cylinders offer increased energy efficiency. Their composite insulation with vacuum insulated panels and HDPU foam retains heat for longer. (Energy Efficiency Class: A)


Weishaupt thermal store: WES 100 - 140
This thermal store is designed as an under-set unit and serves as a buffer tank for heat pump systems, evenly releasing heat to a building's heat distribution system. (Energy efficiency class WES 100, 140: A, (Energy efficiency class WES 120: B)

WES eckig

Weishaupt Aqua Comfort: WAC 300-500

A classical water cylinder with a generously dimensioned heating coil for maximum DHW convenience. The large cylinder volume facilitates comfortable hot water temperatures and helps to save energy. (Energy efficiency class: WAC 300-400: B / WAC 500: C)

Weishaupt WAS 300-500

The "Eco"-version cylinders offer increased energy efficiency. Their composite insulation with vacuum insulated panels and HDPU foam retains heat for longer. (Energy Efficiency Class: A)


Looking for a Weishaupt dealer near you?

Find your Weishaupt stockist here

Need tailored advice from a Weishaupt specialist?