Attaining High Energy Efficiency with Less Materials Using — Smaller-Diameter, Inner-Grooved Copper Tubes

COLD CLIMATE HEAT PUMPS ARE COMING TO AMERICA
 
A Sea Change is Now Happening in Heating

In early 2022, the US was still in the grip of a stubbornly persistent pandemic. Supply chain bottlenecks were contributing to creeping inflation and threats of galloping inflation. Hopes of major climate legislation were dashed with the failure to pass the Build Back Better Act [1]. Enthusiasm for heat pumps had waned or was entirely muted at the AHR Expo in Las Vegas in early 2022.