Heat pump water heaters use a fraction of the energy of conventional electric resistance heaters — which use more electricity in a year than an EV — but they're only 2 percent of the market, mainly because they tend to cost more, be slow and loud, and require a plumber and an electrician. Reservoir is a Boston company trying to fix all that, with a smar…
Listen to this episode with a 7-day free trial
Subscribe to Volts to listen to this post and get 7 days of free access to the full post archives.
