Aira announced the Aira Indoor Unit Compact on 4 November 2024, describing it as one of the slimmest and most flexible heat pump solutions on the market1. The announcement was made from Stockholm and covers an indoor unit designed to work with a separate hot water cylinder rather than an integrated one1.
The unit measures W40 x D25 x H72 cm, which Aira says makes it one of the slimmest indoor units available and allows it to fit into existing boiler spaces and utility cabinets1. Because the hot water cylinder is separate, Aira states the unit can be placed in locations such as kitchen or bathroom cabinets, or garages, and can be fitted into the space where an old boiler once stood1. The cylinder range runs from 150L to 300L, which Aira says ensures a continuous supply of hot water for households of up to six people1.
"We wanted to bring another solution to our clean energy-tech product portfolio that can make it even easier for more people to switch to a heat pump. By offering one of the slimmest solutions on the market, Aira is enabling more households to switch to greener, cleaner and more affordable heating solutions."
The launch follows the Aira Heat Pump in March 2024 and Aira Clean Energy tariffs in July, which the company says unlock annual energy bill savings of £560 for customers1. Aira launched in the UK in November 2023 and states it is working towards taking five million homes off gas across Europe1. The announcement does not give a price for the Aira Indoor Unit Compact, an availability date, or a list of which properties it suits; none of these has been reported1.
| Feature | Detail |
|---|---|
| Dimensions | W40 x D25 x H72 cm |
| Hot water cylinder | 150L to 300L, separate |
| Stated hot water capacity | Households of up to six people |
| Installation position | Existing boiler space, utility cabinets, kitchen or bathroom cabinets, garages |
Why it matters for households
For a household weighing up a switch from a gas boiler, the physical size of the indoor unit is often the constraint rather than the heat pump itself. A unit that fits where the boiler was, with the cylinder sited elsewhere, removes the need to find a single large space for both. That matters in flats, terraces and homes where the old boiler sat in a kitchen cupboard and no airing cupboard is available.
The separate cylinder also changes how a home stores hot water. A 150L to 300L cylinder sized to the occupants, rather than a fixed volume, affects how much hot water is on hand and how quickly it recovers. Households comparing options can read more on air-to-water heat pumps and on hot water heat pumps and cylinders, and can see how Aira sits among other suppliers in the manufacturers hub and the Aira heat pumps in the UK page.
The £560 annual saving figure is Aira's own, tied to its Clean Energy tariffs, and applies to customers on those tariffs rather than to heat pumps generally1. No independent verification of that figure appears in the announcement1.
What happens next
No installation date, price or availability window for the Aira Indoor Unit Compact has been reported1.