Aira indoor units

During our free home energy assessment, a Clean Energy Expert will discuss where your indoor unit will be fitted. In most instances, the indoor unit can be installed in the same location as your previous boiler.

The indoor unit, which distributes water to your taps and showers, can store and heat water to similar temperatures produced by gas or oil boilers (75 °C). However, heating water to such high temperatures is inefficient and unnecessary, especially since temperatures exceeding 45°C at the point of use can lead to scalding. As a result, water is typically heated to lower temperatures to optimise efficiency. Your Aira Technician will set your optimal water temperature during installation.

The buffer tank, which stores water for your radiators and underfloor heating, ensures the temperature of the water running through your heating system sits between 35°C and 55°C. Although this temperature range is lower than that of traditional fossil fuel boilers (60°C to 80°C), our Aira Comfort Guarantee ensures that your heat pump system will maintain a cosy indoor temperature all year round. If not, we'll come out and fix it.

During installation, your Aira Technician will set the amount of hot water your heat pump stores to suit the needs of your household. If you want to change this, you can do so on your Aira Home Energy app.

For a clear idea of how much is left, open your Aira app where your remaining hot water is shown in minutes, not litres. Have unexpected guests arriving and need more? Simply activate Hot Water Plus. Afterwards, your system returns to making your usual amount. ​

As part of the Aira Comfort Guarantee, the 15 Year Performance Guarantee promises a cosy indoor temperature between 18˚C-22˚C, even on the coldest day of the year (depending on the room and based on expected minimum temperatures).

If not, we’ll come out to fix it at no extra cost.

Read our terms and conditions under “warranty” to learn more about our heat pump’s ability to maintain minimum indoor temperature.

You can change your home's target temperature via your Aira Room Thermostat or the Aira Home Energy app.

With the Aira Comfort Guarantee, we promise that our Aira Heat Pumps will continue to provide a cosy indoor temperature for the next 15 years. Or we'll come out to fix it. And, if you want to extend your cover when your 15 years are up, that’s easy and affordable. 

To protect your water from Legionella bacteria, your system will efficiently increase the domestic hot water temperature to at least 65°C every 7 days for 30 minutes. The Legionella prevention process runs between 00:00-04:00 at night.