This has been discussed before on Ars, such as at https://arstechnica.com/civis/threa...ost-efficient-heat-pump-in-the-world.1501605/, and https://arstechnica.com ...

Linear-motor driven plunger pumps are most efficient at transforming mechanical energy to hydraulic work in low-producing and highly deviated wells. Linear-motor driven plunger pumps (LMDPP) are most ...

Hydronic heating has a long history of innovation in the boiler industry, driven by advancements in efficiency, performance and sustainability. The portfolio of many companies’ modern heating ...

When you're trying to lower your utility bills, you might be tempted to reach for the thermostat. That's a good instinct. Setting your thermostat strategically can help reduce your heating or cooling ...

Outside a 100-year-old house on the edge of the Peak District in northern England, a heat pump’s fan blades are swiftly spinning. They’re drawing outdoor air over coils of refrigerant, harvesting ...

Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling ...

The residential heating and cooling industry is facing unprecedented regulatory changes from both federal and state mandates. Government leaders from 24 states have instituted ambitious residential ...