HVAC install, main house + ADU (Mid-Wilshire 90005)

Licensed C-20. Manual J for the front house, then install. Front house: 2 gas furnaces (AFUE 80) + 2 split AC, ducted. ADU: owner-supplied ductless ceiling-cassette tri-zone; installer must agree to install and warranty owner-supplied equipment. Linesets, condensate, HVAC disconnect hookup, attic platform, startup/test, LADBS HVAC permit + Title 24 docs. Excludes gas piping (done by gas trade), electrical beyond disconnect, scaffolding. Known specs: Permits issued [permit no. withheld] (addition/remodel ~1006 sf) and [permit no. withheld] (garage-conversion ADU ~799 sf). Demo, foundation, framing done. ADU unit: Della ceiling-cassette tri-zone 27k (9k+9k+12k). Front house ~3,381 sf, CZ9. Planning loads (not stamped): 1st fl ~42.1k Btu/h cooling, 2nd ~39.0k. Tonnage not final: per real Manual J. Equipment counts/locations: verify at site walk Budget: open. Bid what the work costs. Site visit optional: you can bid without one.