Equium claims that the heat pump system is completely silent, despite the use of a speaker to generate the acoustic wave. The level of noise is reportedly lower than 30 dB – the equivalent of a whisper.
“The sound our system produces stays confined inside the core, so you cannot hear it from outside,” said Loyer.
I wonder how this idea will age. I haven't been to a bank branch in so long. Hell, I've written 5 checks in the last 2 years. I deposit the rare check with my phone or ATM. Why would I want to go to a branch? I took out my last mortgage with my credit union and still never when in the branch. My 20-something daughter never considered branch locations at all when picking her new bank.