Looking towards innovations that accelerate the energy transition, I have a question for the startups and founders on hackernews:

Is anyone working on a "solid state" or "caloric" (I'm not sure which terms is the best to use) heat pump and do you have any insight on when these will come to market?

I want to replace the gas boiler in my apartment wiht a heat pump, but it will most likely have to be wall mounted and produce too much noise, which makes is infeasible. I've been reading about how future heat pumps will use "magnetocaloric, electrocaloric, elastocaloric, and barocaloric" effects to shrink the size, weight and noise of a heat pump.