
Aira Indoor Unit
Your Aira Indoor Unit is where it all happens. It stores hot water, sends it to your taps and showers and fine-tunes efficiency thanks to Aira Intelligence. It even keeps you in the loop with Intuitive Light Cues.
Available in 100L or 250L, it’s sized to match your home’s hot water needs.

What’s included in this system?
The Aira Indoor Unit works seamlessly with a buffer tank and outdoor unit to efficiently heat your home and hot water.

Outdoor unit
The outdoor unit draws in and extracts heat from the fresh air outside to heat your home and hot water.

Buffer tank
The buffer tank is where hot water for your radiators and underfloor heating system is stored.


Buffer tank
Available in 40L and 100L, your buffer tank quietly does a big job.
- Keeps hot water ready for your radiators or underfloor heating.
- Manages flow rates & oversees defrost cycles to keep your system running like clockwork.
- Silences those annoying knocking sounds when temperature shifts try to cause a racket.
- Helps your system go the distance by cutting out unnecessary stop-start cycles.
It's the small details that make a big difference. That’s why every Aira installation includes one.

Aira Indoor Unit (100L)
Description | All-in-one unit |
Best suited for | 1-4 people |
Tank size | 100L |
Tank type | Stainless steel |
Insulation | EPS |
Max temp tank | 75°C |
Dimensions (cm) (w/d/h) | 50 x 50 x 110 |
Energy efficiency class 35°c (in combination with heat pump) | A+++ |
Connecticity | Bluetooth, Wi-Fi, Thread, Ethernet, Cellular |
Aira Indoor Unit (250L)
Description | All-in-one unit |
Best suited for | 1-6 people |
Tank size | 250L |
Tank type | Stainless steel |
Insulation | EPS |
Max temp tank | 75°C |
Dimensions (cm) (w/d/h) | 67 x 60 x 172 |
Energy efficiency class 35°c (in combination with heat pump) | A+++ |
Connecticity | Bluetooth, Wi-Fi, Thread, Ethernet, Cellular |
Aira Buffer Tank (40L)
Description | Buffer tank |
Best suited for | n/a |
Tank size | 40L |
Tank type | Stainless steel |
Insulation | Polyurethan |
Max temp tank | 95°C |
Dimensions (cm) (w/d/h) | 37.5 x 37.5 x 71.5 |
Energy efficiency class 35°c (in combination with heat pump) | n/a |
Connecticity | n/a |
Aira Buffer Tank (100L)
Description | Buffer tank |
Best suited for | n/a |
Tank size | 100L |
Tank type | Stainless steel |
Insulation | Polyurethan |
Max temp tank | 95°C |
Dimensions (cm) (w/d/h) | 37.5 x 37.5 x 155.5 |
Energy efficiency class 35°c (in combination with heat pump) | n/a |
Connecticity | n/a |
Learn more about the Aira Heat Pump system

Aira Outdoor Unit
The Aira Outdoor Unit draws in and extracts heat from the fresh air outside to heat your home and hot water.

Aira Indoor Unit Compact
An alternative to the Aira Indoor Unit, the Aira Indoor Unit Compact manages water flow and gathers system information to optimise your heat pump’s efficiency.

Aira Home Energy app
The Aira Heat Pump takes pretty good care of itself. But you always have control of your system anywhere, anytime, with the Aira Home Energy app.