Pablo Päster is an energy and sustainability management consultant who wrote a weekly advice column for Treehugger from 2009-2012. Dear Pablo: I had a home energy audit done and they recommended ...

I cut away the outer metal sheeting of a used hot water tank to make a batch heater and discovered the insulation surrounding the tank is a hardened foam type that forms a solid rigid mass around the ...

When you shop through retailer links on our site, we may earn affiliate commissions. 100% of the fees we collect are used to support our nonprofit mission. Learn more. Heating water for showering, ...

Pablo Päster is an energy and sustainability management consultant who wrote a weekly advice column for Treehugger from 2009-2012. Dear Pablo: Why should I turn down my water heater? Isn't it just as ...