Sources
How is the Manual J calculation performed?
- ACCA, Approved Software (Amply listed)
https://www.acca.org/standards/software - Amply, Features
https://www.amply.energy/features - Amply, Smart starting defaults for insulation, windows and air leakage
https://help.amply.energy/en/articles/11504155-smart-starting-defaults-for-insulation-windows-and-air-leakage - Amply, Design conditions
https://help.amply.energy/en/articles/10279920-design-conditions-automatic-settings-and-making-edits - Amply, Room orientation and window direction
https://help.amply.energy/en/articles/15777564-room-orientation-and-window-direction - Amply, Windows: verify and edit
https://help.amply.energy/en/articles/15200087-windows-verify-and-edit - Amply, Ducts: verify and edit
https://help.amply.energy/en/articles/10343431-ducts-verify-and-edit - Amply, Air infiltration: verify and edit
https://help.amply.energy/en/articles/10185643-air-infiltration-verify-and-edit - Amply, Create, review and export Manual J reports
https://help.amply.energy/en/articles/9722771-create-review-and-export-manual-j-reports - Amply Heat Pump Copilot, App Store listing (device requirement)
https://apps.apple.com/us/app/amply-heat-pump-copilot/id6452838646
The 60 to 90 minute figure is YVM's own (Sean, 2026-09-06); no external source.