Outdoor heat pump: warmth that starts outside your home.
Heat from nature
How modern heat pumps turn outside air into indoor warmth.
Outdoor heat pumps draw their energy from the surrounding air. Specifically designed for outdoor use, air-to-water heat pumps operate effectively in all weather conditions, from freezing cold to heat waves. They reliably and efficiently provide your home with warmth, regardless of the weather outside.
- Saves indoor space.
With the heat pump installed outside, you only need space indoors for a control unit , a hot water cylinder, a hydraulic station and piping connections, which take much less space.
- Quieter living area.
By placing noisier components outside, indoor noise levels are minimised, enhancing comfort.
- Flexible placement outdoors.
Outdoor units can be placed in various locations, including rooftops and under carports, offering versatility in installation and can therefore easily adapt to local conditions.
- Easy retrofitting.
Especially for existing buildings, outdoor installation is often easier to implement than indoor installation, because hardly any modifications are needed inside the house.
Disadvantages of outdoor heat pump units
What to consider with outdoor installation.
While outdoor installation offers significant space savings, you'll still need some room both on your property and indoors for essential components. The outdoor unit handles the main work, while only a compact indoor unit and connections are needed inside – still far more space-efficient than traditional indoor-only systems.
Vaillant heat pumps are engineered to thrive in all weather conditions. Vaillant's outdoor models are built with exceptional durability and weather resistance specifically for year-round outdoor operation. This robust design ensures reliable performance and long-lasting quality, regardless of seasonal weather changes.
Noise of outdoor heat pumps
Whisper-quiet thanks to sound protection.
When your heat pump stands outdoors, it should work as quietly as possible – for yourself and for your neighbours. While modern heat pumps are very quiet, they remain audible. For particularly much peace, choosing the right location plays the decisive role. The heat pump should be installed sufficiently distant from terraces, neighbouring properties, and walkways. Walls or niches where sound could amplify are also unsuitable as installation locations.
For a better understanding, discover more about heat pump noise and how it may affect your comfort.
Quiet. Quieter. Vaillant heat pumps.
Vaillant's outdoor heat pumps are particularly quiet. Thanks to our specially developed Sound Safe System, they belong to the quietest heat pumps on the market. With our aroTHERM plus, only 28 dB(A)* is possible in sound-reduced night mode. This makes our heat pumps easily usable in densely built row house settlements.
Monoblock vs. split systems
Monoblock vs Split: two outdoor heat pump designs.
Monoblock units house all components in a single outdoor unit for simple installation and little maintenance.
Split systems divide components between an outdoor and indoor unit, offering greater installation flexibility but requiring more complex setup.
Both designs deliver similar efficiency and work well for new construction or renovation projects.
- Outdoor installation of monoblock systems
- Outdoor installation of split systems
The entire heat pump unit can be flexibly installed directly on the building or in the surrounding outdoor area. The installation requires a resilient, durable, horizontal heat pump base. The ambient air is drawn in and immediately discharged to the outside. In this way, the heating water is also treated outside the building and passed on to the internal heat storage and heat distribution system through insulated pipes.
Advantages:
- All major system components cost-efficiently combined device
- Minimum cost and effort for constructing heat pump base and pipe routing
- Comparably small space requirements of indoor appliances
- No regular inspection of the refrigerant circuit required
Drawbacks:
- Outdoor installation usually requires an official construction permit
- The heat pump is well visible and subject to weather conditions all year round
- Risk of freezing of longer pipes
Requirements for outdoor heat pump units
The ideal location for outdoor heat pumps.
- Ground conditions.A firm, level surface such as a concrete foundation or stable floor slab is crucial. This keeps the heat pump standing securely without sinking over time.
- Wind-protected area.A location that is not in the main wind direction avoids cool exhaust air getting back into the intake opening. This maintains efficiency and keeps electricity costs manageable.
- Orientation toward the street.When the exhaust direction is oriented toward the street, possible operating noises don't disturb. Additionally, no walkway should be within about three meters to avoid icy surfaces from cool exhaust air.
- Free access.The location should be chosen so that specialists can reach the heat pump easily at any time. This facilitates maintenance work and ensures reliable operation.
Outdoor Vailant heat pumps
Efficiency in its most flexible forms.
- 1/3Air-to-Water Heat PumparoTHERM proMinimum size for maximum comfort: the aroTHERM pro with an output of 5 to 11 kW is our space-saving heat pumpGet more details
The space saver for outdoor installation
Minimum size for maximum comfort: the aroTHERM pro with an output of 5 to 11 kW is our space-saving heat pump. It is not only the ideal solution for new buildings. Due to its high flow temperatures of up to 70 °C, it is the ideal solution for modernising your heating system while keeping existing radiators. Thanks to our industry-unique safety concept to reduce protective zones, the heat pump can be placed almost anywhere. With ErP labels up to A+++ (D - A+++), it offers highly efficient heating and is also eligible for subsidies. Furthermore, its use of the natural refrigerant R290 makes it a future-proof choice.
- 2/3Air-to-water heat pumparoTHERM plusOur most efficient air/water heat pump reduces operating costs.Get more details
Efficiency in its most flexible form.
- Our most efficient air/water heat pump reduces operating costs.
- Our quietest air/water heat pump with 28 dB(A) for a peaceful neighbourhood
- Maximum freedom of positioning thanks to uniquely minimal protective zones.
- Elegant design in black grey
- Including free 5-year guarantee
The new standard: Our new aroTHERM plus heat pump always finds its place. This is because our safety concept, which is unique in the industry and minimises the necessary distances. Equipped with the natural refrigerant R290, it is our most efficient air-to-water heat pump and generates up to five parts heat* from one part electricity. Available in output sizes from 3 to 12 kW, it is ideal for one-family houses - even with existing radiators, of course.
- 3/3Air-to-Water Heat PumparoTHERM SplitA split heating solution with up to 12 kW output for larger single-family houses or multi-family houses.Get more details
A split heating solution with up to 12 kW output for larger single-family houses or multi-family houses.
- Super quiet operation
- High energy efficiency at low operational costs
- Outstanding quality and durability
- Can even be installed up to 40m away from your property
The aroTHERM Split heat pump increases your energy efficiency by using free environmental heat as its main energy source. With its output of 10 and 12 kW it is a cost-efficient heating solution for larger single-family houses or multi-family houses.
