https://sifted.eu/articles/northvolt-founders-heat-pump-startup-secures-e87m-news
Northvolt founder’s heat pump startup secures €87m | Sifted
Oct 19, 2023 - Swedish heat pump startup Aira announces a whopping 1bn SEK raise from innovation and climate tech investors.
heat pump startupnorthvolt
https://techcrunch.com/2025/12/08/heat-pump-startup-quilt-raises-20m-series-b-to-expand-sales/
Heat pump startup Quilt raises $20M Series B to expand sales | TechCrunch
Dec 8, 2025 - Quilt has sold nearly 1,000 units in the U.S. and Canada, and the new funding should help expand sales operations to more states and provinces.
heat pump startupseries b