Stylish - optimised for heating

The air-to-air heat pump indoor unit is the part of an air-to-air heat pump system that’s located within the home, and provides the conditioned air into the space.

The choice of an air-to-air heat pump indoor unit depends on your specific needs but it's important to understand how the system works as a whole. There are different air-to-air heat pump systems (also known as air conditioners), each with its own unique characteristics. One of the most popular types used in homes is a split system, which is split into two units: one indoors and one outdoors. While heating, the outdoor unit extracts heat from the outside air and transfers it inside via the indoor unit, or reverse when cooling your home.

There are three types of air-to-air heat pump indoor units:

Wall-mounted units

Wall-mounted models (Stylish, Ururu Sarara, Daikin Emura, Perfera,) come in different sizes and colours to match with your interior.

Floor-standing units

Floor-standing models (Perfera Floor) are compact air-to-air heat pumps that fit perfectly under a window sill or in a room where the height is limited.

Concealed ceiling units

Concealed ceiling units. If you don't want a visible indoor unit, a concealed air-to-air heat pump can be installed in suspended ceilings or false walls.

There are three options for the placement of the indoor unit of an air-to-air heat pump (also known as air conditioner):

A wall-mounted unit

A wall-mounted unit is ideally positioned above a door or centrally placed in a room. To provide the best comfort, it is not recommended to place the unit above a sofa, the head of the bed or a large closet. This will ensure the airflow can be distributed evenly throughout the room.

A floor-standing unit

A floor-standing unit can be installed underneath a window to avoid that the airflow is blocked. The unit should also not be blocked by furniture to ensure air flows evenly around the room.

A concealed ceiling unit

A concealed ceiling unit is installed in a false ceiling and therefore offers more flexibility thanks to its compact design as only the grilles are visible. The area around the vent should not be blocked by furniture and ideally not directly above a sofa or the head of the bed to ensure optimal comfort.

An air-to-air heat pump (also known as an air conditioner) is typically composed of two units: The indoor and outdoor unit. These are usually called ‘split’ systems.

The split outdoor unit, mounted on an exterior wall or positioned in a garden or on a roof, is the part of an air-to-air heat pump that contains the compressor, propeller fan, circuit board and heat exchanger. The outdoor unit compresses the refrigerant that extracts or emits heat or cold in the room to or from its companion indoor unit.

For your heat pump to function as it should, it is essential that the system is installed correctly. Only an authorised technician should carry out the installation and in a suitable location. The surface must be firm enough to withstand the weight and vibrations of the unit and there must also be sufficient space for airflow and for connecting pipes and power cables. Any plants or shrubs that may be located near your heat pump should be at least a metre away and regularly pruned. The pump should also be installed in a place that’s easy to access for services and other general maintenance.

We often get asked why we can’t put the heat pump inside. Could they not be placed in the loft or conservatory? The answer to this is no. This is because, after a few hours, the heat pump will have extracted all of the warmth from the trapped air, effectively turning this space into a freezer. This is why air-to-air heat pumps need access to the free-flowing outside air.

It is important to differentiate between servicing and cleaning. Air-to-air heat pump maintenance and cleaning can be done by the user, while servicing must be carried out by a professional engineer.

Check your air-to-air heat pump manual and follow any instructions it provides on heat pump cleaning.

•  Clean the air supply and return grilles/louvres with a damp cloth and make sure they’re not blocked.
• Filters can usually be removed and cleaned simply by vacuuming or washing with a bit of lukewarm soapy water.
• Clean the outdoor unit, gently hose it down to remove dirt and brush it to clear cobwebs. Ensure bits of plants and leaves that may have gathered or have been sucked in the back of the coil are removed. Take care to not damage the fins.
• Beware – the fins on the coils are very sharp. We recommend using the correct personal protective equipment including gloves.
• Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide.
• Do NOT use water or air that is 40°C or higher.
• Do NOT use polishing compounds.
• Do NOT use a scrubbing brush.