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The Aira Heat Pump is an air source heat pump, which means it uses heat from the fresh air to warm your home and hot water.
It’s 4X more efficient than a boiler, cheaper to run, and guaranteed to keep your home cosy. Even on the coldest day of the year.
Your outdoor unit captures heat from the fresh air outside and uses it to warm your home and hot water.
Outdoor unitYour outdoor unit captures heat from the fresh air outside and uses it to warm your home and hot water.
Indoor unitsYour indoor unit and buffer tank store and distribute hot water throughout your home.
ControlsYour thermostat and app let you control your heat pump. Anywhere. Anytime.
£8,200£8,200£0£05.9% p.a. fixed.
Representative APR 5.9%9.9% p.a. fixed.
Representative APR 9.9%60 months120 months£158.15£107.91£9,489£12,949£1,289£4,749Monthly payment£158.15
Monthly payment£107.91
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Most UK homes are already suitable. And if yours needs any upgrades — like new radiators — we’ll tell you during your free home energy assessment.
And we make it simple. If it fits, we’ll design your bespoke system. If it doesn’t, we’ll tell you honestly.
No fuss. No-obligation. After a quick call, we’ll arrange a visit from one of our Clean Energy Experts. They’ll answer all your questions, provide a fixed quote and show how much you could save.
No fuss. No-obligation. After a quick call, we’ll arrange a visit from one of our Clean Energy Experts. They’ll answer all your questions, provide a fixed quote and show how much you could save.
Once you’ve accepted your quote, we’ll design your system, handle your government grant application, install your heat pump, and remove your old boiler.
Once you’ve accepted your quote, we’ll design your system, handle your government grant application, install your heat pump, and remove your old boiler.
We won’t leave you out in the cold. With our all-inclusive plan, your system is fully covered by the 15-Year Aira Guarantee. And your first year is free.
We won’t leave you out in the cold. With our all-inclusive plan, your system is fully covered by the 15-Year Aira Guarantee. And your first year is free.
A cosy home is just one part of life with an Aira Heat Pump.
Explore real-world data from homes across the UK, including:
It’s natural to want even lower energy bills. And with Aira, it’s simple.
Your solar, home battery and heat pump – and everything you need to connect, control, and care for them – all in one place.
Together, they form the Aira Home Energy System. One complete home energy eco-system that can cut your energy bills by up to 50%. Add earnings from selling excess solar energy back to the grid, and your overall energy costs could fall by up to 80%.⁴
² 100% reduction in carbon emissions includes switching from a boiler to an Aira Heat Pump and using green electricity.
³ The Aira Guarantee is limited by our terms and conditions and does not cover damage or malfunction caused by e.g. components not supplied by Aira, improper or negligent use, vandalism or violence to the heat pump, or unauthorised tampering with the heat pump. It's free for the first year and £19.90 per month thereafter. Full terms and conditions are available here.
We compare the running costs of a gas boiler with an Aira Heat Pump optimised by Aira Intelligence on a Cosy Octopus tariff to understand how much customers could save on their energy bills.
For this, we don’t guess, or assume. Because Aira Intelligence is built into every Aira Heat Pump, we can see exactly how much electricity each installed system is using. And when. We look at homes with at least a year’s worth of performance data to ensure a fair annual comparison and avoid seasonal bias. Using a typical heat pump efficiency level of COP 4, we calculate how much heat that electricity would deliver. We then work out how much gas a typical boiler would need to produce the same amount of heat, assuming an efficiency of 85% (based on a UK government study). Next, we calculate running costs using the Ofgem price cap for Q2 2026: 26.11 pence per kWh for electricity and 7.33 pence per kWh for gas. We also include the savings customers make by no longer paying the gas standing charge (£106 per year). This allows us to compare what it costs an Aira Heat Pump and a gas boiler to deliver the same amount of heat to the same home. The difference between the two is the saving. We then take an average across all homes to provide a representative view of real-world savings.
When customers connect their tariff in the Aira app, Aira Intelligence can optimise how their heat pump runs around electricity prices. For example, on a smart tariff, Aira Intelligence can shift heating into cheaper periods when electricity costs less. We use Cosy Octopus in our savings scenario because it provides the largest set of real-world optimisation data across our customer base. To measure the impact, we compare days when tariff optimisation is active with randomly selected calibration days where optimisation is temporarily switched off. We then analyse the difference in running costs while accounting for factors such as weather and outdoor temperature, which naturally affect heating demand. This allows us to isolate the impact of tariff optimisation and measure how much money customers are actually saving. We add these savings to the base savings from switching from a gas boiler to an Aira Heat Pump.
Because households can save money by shifting some everyday electricity use into Cosy Octopus’ cheaper periods, we also include estimated appliance savings in our overall savings scenario. To calculate this, we start with the average electricity consumption of an Aira Heat Pump home. Based on our fleet data, the average Aira Heat Pump home uses around 3,900 kWh of electricity per year. Heating typically accounts for around 53% of household electricity use. This means the remaining 47% – around 3,458 kWh per year – is used by appliances and other household electricity demand. We then estimate the savings customers could make by taking advantage of Cosy Octopus’ lower-cost electricity periods. For example, customers may choose to run appliances such as washing machines, tumble dryers and dishwashers when electricity is cheaper. For our savings scenario, we assume this behaviour reduces appliance electricity costs by 8%. We then add this estimated saving to the measured savings from running an Aira Heat Pump on Cosy Octopus compared with a gas boiler to show the total potential energy bill savings available to customers.
Some customers will save more than others. Every home is different, and savings depend on factors such as property size, energy use, heating demand and how actively customers make use of lower-cost tariff periods. For this reason, we don’t use the highest saving figure from our data when communicating potential savings. Instead, we use a saving figure that a significant proportion of customers could realistically achieve based on real-world performance data. We believe this provides a fairer and more representative view of the savings available. Many customers may save more than the figure we advertise. The savings shown are designed to reflect a realistic outcome rather than the maximum possible result. Savings will vary between homes and can be higher depending on factors such as indoor temperature preferences, tariff choice and Aira Intelligence settings chosen in the app.
Our claim that the Aira Heat Pump can reduce your home’s heating CO₂ emissions by 100% is based on an average yearly electricity consumption with an Aira Heat Pump system combined with the Cosy Octopus smart tariff compared to the gas consumption of a traditional boiler. Octopus Energy smart tariffs are 100% green. This means that the electricity you pay for originates from green sources such as wind, solar and hydropower. Octopus achieves this by working out how much power their customers are taking out of the grid annually and ensure an equal amount of green electricity is added into the system in its place over the year. Not only does this make the electricity you pay for carbon free, it helps make the energy system greener for everyone too.
Our 50% energy bill saving – or £1,392 a year – are based on energy bill savings over the lifetime of the system, not total energy-related costs. In simple terms, we compare the gas and electricity bills of a modern home with a gas boiler to the electricity costs of the same home powered by an Aira Heat Pump and Aira Power system (Aira Home Energy System) over 20 years. These calculations exclude hardware and maintenance costs. The example home includes an 8kW Aira Heat Pump, 14 470W solar panels and a 13.3kWh Aira Power Store battery storage. First, we establish a baseline. The home uses 20,000 kWh of gas per year for heating and hot water, and 4,000 kWh of electricity for household use. Energy prices are based on the Ofgem price cap (Q3 2026), including 7.33p per kWh for gas, a 29.09p daily standing charge, and 26.11p per kWh for electricity. Next, we model the same home with an Aira Heat Pump. Thanks to its efficiency, the heat pump uses 4,500 kWh of electricity per year to deliver the same level of heating. Combined with household electricity use, total consumption becomes 8,500 kWh per year, with no gas required. We then factor in the Aira Power system. Using solar generation, battery storage and a smart tariff, electricity for heating and household use is modelled at a blended rate of 21p per kWh, reflecting lower-cost periods throughout the day. Finally, we compare the total energy costs over time. Assuming 3.1% annual energy price inflation and a 20-year system lifetime, the gas boiler home would spend £71,013 on energy. The same home with an Aira Home Energy System would spend £33,254. That equates to 53% lower energy bills over the lifetime of the system, which we have rounded down to 50%. In addition, the system is expected to generate excess electricity. Around 3,401 kWh per year can be exported back to the grid. At an average export price of 15p per kWh, this could generate £20,413 in additional revenue over 20 years. When these export earnings are taken into account, overall energy costs fall from £71,013 to £12,841. That equates to 82% lower overall energy costs over the lifetime of the system, which we have rounded down to 80%. DISCLAIMER 1: Gas and electricity bills are calculated using prices from Q3 2026. Actual savings and export earnings may vary depending on your energy use, future price caps, export rates and tariff rates. DISCLAIMER 2: Consumption and performance assumptions – including 20,000 kWh yearly gas use and 8,500 kWh total yearly electricity use for an Aira Heat Pump home – are based on Aira’s own data and insights from over 800 home visits each month. Source of data: AIRA 2026
Making the switch to clean energy is more affordable than ever with the £7,500 government grant. But your home needs to meet the eligibility criteria. Here’s what you need to know: 1) Live in England or Wales: The Boiler Upgrade Scheme is only available for properties in England and Wales. If you live in Scotland or Northern Ireland, other funding options may be available. 2) Own the property: Only homeowners can apply for the grant. Your installer will handle the application for you, and Ofgem will contact you directly to confirm. Most homes meet the required size criteria, but don’t worry, we’ll check this for you as part of the process. 3) Completely replace a fossil fuel heating system: Your current heating system must run on oil, gas (non-condensing boilers), LPG, or inefficient electric heating that doesn’t include a heat pump. Hybrid systems with fossil fuel heating and air-to-air heat pumps aren’t eligible under this scheme. 4) Have a valid energy performance certificate: Your EPC must be less than 10 years old. No EPC? No problem. We’ll take care of it for you, just get in touch. 5) New build? Must be a self-build: If your home is a self-build (never owned by a business or used for commercial purposes), you’re eligible. But standard new-build properties don’t qualify under the scheme. 6) Installed by an accredited expert: To qualify, your heat pump must be installed by an MCS-certified professional who’s a member of an approved consumer code, such as RECC or HIES. (Good news. All our Aira Technicians are.)
Live in Scotland and looking to reduce your energy bills with a cleaner, more efficient heating system? The Home Energy Scotland Grant and Loan could help, providing up to £15,000 in funding for eligible properties to install a heat pump (£7,500 as a grant and £7,500 as an interest-free loan). For rural areas, you can access up to £16,500 in funding. Here's what you need to be eligible: 1) Live in Scotland: The Home Energy Scotland Grant and Loan is only available for eligible properties in Scotland. 2) Live in the property: Homeowners and tenants can apply as long as they live in the property where the energy efficiency improvements are being made. Landlords, businesses, and property developers aren’t eligible. 3) Have a valid energy performance certificate (EPC): Your EPC must be less than 10 years old. Most homes meet the requirements, but don’t worry—we’ll check this for you. Not sure if you have one? Contact Aira today. 4) Use an MCS-certified installer: To qualify for the grant and loan, your heat pump must be installed by an MCS-certified company. At Aira, all our installers are MCS-certified, and we’re part of a Trading Standards Institute-approved consumer code.
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