Presentation describing how to install ductless heat pumps in cold climates with snow or ice present challenges; topics include: (1) siting the outdoor unit, (2) tips for managing snow depths and wind, and (3) smart installation of line sets.
Video describing traditional 2x4 16 inch on center framing versus advanced framing with 2x6 stud walls at 24 inch on center, insulated corners and headers, wall stud-ceiling joist alignment, etc. providing a strong wall with more room for insulation.
Video from Home Innovation Research Labs giving a background on air admittance vents, which are one-way mechanical vents used in plumbing systems to eliminate the need for conventional pipe venting and roof penetrations.
Video of a pro tip contractors can share with homeowners showing how you can reduce bypass around the return grille air filter by taping the seam around the filter with a removable tape like masking tape.