September 14, 2016 Updated: June 15, 2023 Infill Foundation for a Four-Story Passive House "In order to maximize the buildable area on the infill lot, we had to go fairly deep and do some extensive shoring." —Dan Whitmore of Hammer & Hand Concrete & Masonry Insulation & Air Sealing YouTube video
April 29, 2016 Updated: June 15, 2023 A Heat Pump Whose Refrigerant is 2000x Better For GWP A super efficient heat pump with a GWP of 1 HVAC & Mechanicals YouTube video
