by Jay Stein | Mar 15, 2026 | Efficiency, Residential, Uncategorized
Unlike natural gas heating equipment, it’s vital that heat pumps be accurately sized. New calculation methods take advantage of data we already have to make heat pump sizing more accurate, faster, and cheaper. About six years ago I replaced my home’s natural gas...
by Jay Stein | May 12, 2023 | Efficiency, Residential, Technology, Uncategorized
We want dual-fuel heating systems—electric heat pumps combined with gas furnaces for backup—to minimize our carbon footprints and utility bills. Currently, no one makes thermostats that would enable these systems to do these things, but if governments and...
by Jay Stein | Nov 17, 2022 | Efficiency, Public Policy, Residential, Uncategorized
Every day in the US, homeowners replace thousands of central air conditioners. They’d save money and reduce climate emissions if they replaced them with heat pumps. I’ve got a 20-year old air conditioner and when it fails, which will likely be soon, I’m going to...
by Jay Stein | Mar 30, 2022 | Agriculture, Efficiency, Uncategorized
Greenhouse agriculture is far more water efficient than open field, at the expense of greater energy consumption. New technology is enabling drought-stricken growers to move more crops into greenhouses with a smaller energy penalty. As climate change dries out the...