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The single greatest household emitter

Residential heating is the forgotten CO₂ emitter. In reality, it’s the single greatest cause of household CO₂ emissions, making our inefficient, fossil-fuel guzzling gas and oil boilers Europe's third largest CO₂ culprit. This needs to change. Now.

A lone windmill standing on a field with mighty mountains in the background. A person is standing looking at it in the forefround.

CO₂ emissions from residential heating is:


all of Europe's cement production


all of Europe's iron and steel production


all of Europe’s cars

Woman standing in a beam of sunlight, closing her eyes.

Tackling the polycrisis with clean energy-tech

The climate crisis. An energy crisis. A cost-of-living crisis. Europe is facing challenges of unprecedented proportions. And it's a situation made increasingly complex by geopolitical tensions with key energy suppliers, and insufficient efforts to reduce CO2 emissions.

Electrification of residential heating by heat pumps is the most efficient, affordable decarbonisation technology deployable at scale. This means clean energy-tech will play a pivotal part in solving the polycrisis.

Interested to see how an air source heat pump works?

Everything around us contains heat in the form of thermal energy – it flows from one place to another in a never-ending dance of balance. Heat pumps utilise this natural flow of warmth, alongside some clever technology, to heat your home. Watch our explainer to see how the magic of turning free air into heat energy for our homes actually happens.

Minimalist illustration of a heat pump

Scandinavian home energy innovation

Heat pumps have long been recognised as a highly efficient alternative to oil and gas boilers. They are readily available and widely adopted across Scandinavia, but still uncommon in the rest of Europe. In countries such as the UK, Ireland, Belgium and the Netherlands, between 85-95% of residential heating is still fuelled by gas, oil, coal and other solid fossil fuels. The good news is over 100 million homes across Europe are already suited to switching to heat pumps.

To date, widespread adoption of heat pumps has been hindered by high upfront costs and total cost of ownership, supply chain inefficiency, lack of installation capacity, low awareness and a complex customer experience.

Aira changes all that.

`Air to water Vaillant aroTherm heat pump in the garden of a white house

Be in the know

Get the latest on clean energy-tech and how you can save money on your heating bills.

Energy consumption comparison

Energy efficient home heating

Inefficient gas boilers guzzle 4x more energy than heat pumps. That makes heat pumps almost twice as energy efficient as swapping from a petrol or diesel vehicle to an electric one.

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