* Source - pvmagazine.com [January 2023]
* Thermo- acoustic heat pump
* Developed by Equium {France} - can't provide too much detail here because of copyright - so go online to check it out!
* Revolutionary design based on hi fi sound wave passed through helium gas.
* Claim more efficient and reliable in all conditions than refrigerator-based heat pumps.
* Predicted available end of 2023.