Series B · Climate Tech · Stockholm, Sweden · Founded 2022 · 1200–1200 employees
Aira is a Stockholm-based clean energy-tech startup founded in 2022 that provides intelligent air source heat pumps to decarbonize residential heating across Europe. The company operates a vertically integrated model covering product development, manufacturing, installation, and service, offering customers a subscription-based monthly payment plan with no upfront costs. Since launching in 2023, Aira has rapidly expanded to Germany, Italy, and the UK, achieving an annual revenue run-rate of €200 million and raising over €270 million in total funding, including a recent €150 million round in August 2025. The company employs 1,200 people and operates 18 regional hubs across Europe, positioning itself as a leader in Europe's transition away from fossil fuel heating systems.