The green heart of your home: an air-source heat pump.
Our air-source heat pumps offer an efficient way to provide sustainable heating and even cooling to your home. As opposed to conventional heating solutions, air-source heat pumps transfer heat into buildings instead of combusting fossil fuels – creating cosy warmth with minimum emissions.
The Vaillant technology in air-source heat pumps delivers up to 5 kW heating energy as output from just 1 kW electrical energy input. A significant advantage in efficiency.
Advantages of an air-source heat pump
At a glance: the pros of air-source heat pumps.
- Advantages over conventional oil and gas heating.
Efficient heating with lower running costs, maximum independence from energy prices (especially combined with photovoltaic), low maintenance and operating costs.
- Advantages over ground-source and water-source heat pumps.
Significantly lower site development costs, less strict building regulations and no excavation work required.
The operating principle of an air-source heat pump
How do air-source heat pumps work?
Generally, air-source heat pumps convert thermal energy from air into heating energy. In both variants, the outside air is drawn into the heat pump through a ventilator and passed on to a refrigerant via a heat exchanger.
The refrigerant absorbs the energy from the outside air, heats up and evaporates. The resulting steam is then compressed to produce further heat. Ultimately, the steam heats up the water that runs through the underfloor heating or radiators or the air that is directly distributed to the rooms via ventilation.
Also, both systems can reverse this procedure during summer to cool with your heat pump – and thus operate like a refrigerator. This way, the heat pump takes up warm indoor air and discharges it outdoors to keep your rooms comfortably cool.
Types of air-source heat pumps
Air-source heat pumps exist in two variants.
- Air-to-air heat pumpsLearn more about air-to-air heat pumps
For an air-to-air heat pump like our climaVAIR exclusive, the initial costs are significantly cheaper, partially due to quicker, unobtrusive installation without any changes to your home. It can run parallelly to existing heating solutions. Which is necessary since it doesn't provide domestic hot water, so an additional hot water system is needed.
- Air-to-water heat pumpsLearn more about air-to-water heat pumps
In contrast, air-to-water heat pumps like our aroTHERM plus are capable of preparing domestic hot water. Hence this variant can replace central heating systems entirely but would also function in a hybrid system with a boiler. Operating an air-water heat pump often requires larger radiators or underfloor heating which could mean increased installation effort and cost.
The Checklist
Does an air-source heat pump suit your home?
- Well insulated home
- Sufficient distance from neighbours home
- Low flow temperature below 55° C
- Installation location, which doesn't amplify sound
Planning an air-source heat pump
The ideal size, the right place and the perfect efficiency level.
Heat pump portfolio
Rigorously tested in over 300 functional life tests - our most durable air-source heat pumps.
- 1/4Air-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.
- 2/4Air-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.
- 3/4Air-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.
- 4/4Air-to-water heat pumparoTHERM Split plusA highly efficient split heating solution for one-family houses or energy modernisation projects.Get more details
A highly efficient split heating solution for one-family houses or energy modernisation projects.
- Low running costs due to high efficiency
- Low running costs due to high efficiency
- High heating, cooling and hot water comfort
- Flexible installation
The aroTHERM Split plus reduces energy consumption with free environmental heat. With its output from 3 kW to 7 kW it is the ideal choice for newly built one-family houses or in energy modernisation projects. And with a distance of up to 40 metres between the indoor and the outdoor units, you are also flexible in choosing the installation place.
Investment vs. financial support
Costs and subsidies of an air-source heat pump.
- Investment costs & saving potentials
- Subsidies
The total costs consist of one-off expenses and ongoing expenses. However, air-source heat pumps come with significantly lower development costs compared to other heat pump variants and only use electricity for operation. Annual servicing doesn't require much time – keeping overall costs relatively low from acquisition to daily use.
In terms of savings, the replacement of costly fossil fuels with electricity is one key aspect: The higher the heat pump's annual performance factor is, the lesser electricity it needs to heat your home. Of course, the longer a heat pump is in use, the more you're saving in energy costs over time.
This combination of lower initial costs and increased saving potentials make air-source heat pumps the most favourable choice among heat pumps regarding costs composition.
System expansions
We build the perfect system around your air-source heat pump.
- PhotovoltaicsPhotovoltaics
Run your heat pump even more sustainable and save costs via electricity from photovoltaics.
- Solar thermalSolar thermals
Generate additional heat from the sun’s energy to enhance the performance of your heat pump.
- Buffer cylindersBuffer Cylinders
Use thermal heat from buffer storage tanks, to let the heat pump operate more consistantly.
