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 | Jan 26, 2025 | Efficiency, Indoor Air Quality, Residential
Image Source: Алёна Синичкина High indoor humidity threatens our health and building structures. A new technology enables air conditioners to effectively dehumidify using off-the-shelf equipment, with little additional cost or energy consumption. Excessive indoor air...
by Jay Stein | Sep 12, 2024 | Efficiency, Residential, Technology
Image by: Phyxter.ai The refrigerant that charged up air conditioners and heat pumps for the last 15 years is going away in 2025, and replaced by two new more climate-friendly ones. Whether you’re buying a new system, or you want to help battle the misinformation...
by Jay Stein | Jan 26, 2024 | Efficiency, Residential
Image courtesy of Koolex Charging heat pumps and air conditioners with propane refrigerant can help mitigate climate change and other environmental problems. That may seem scary, as propane is highly flammable, but with advanced technology we can use it safely....
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...
