https://cleantechnica.com/2025/04/21/heat-pump-water-heaters-save-1-ton-of-co2-annually-making-them-the-perfect-earth-day-technology/ Clean Tech News & Views: EVs, Solar Energy, Batteries Tue, 22 Apr 2025 00:56:28 +0000 hourly 1 https://wordpress.org/?v=6.7.1