Panasonic Heating & Cooling Solutions is expanding its Aquarea range of air source heat pumps with the K and L Generations. The K Generation utilises R32 refrigeration, making it an excellent solution for new homes. Meanwhile, the L Generation uses the natural refrigerant R290, which has a Global Warming Potential (GWP) of only 3. The redesigned construction of the outdoor units of both generations provides a high level of safety, as the unit is hermetically sealed for easy and flexible installation. Both generations benefit from a reduced noise level, up to -8dB(A) less than previous models.