Interior Measurement & HVAC Layout Document — Project Atlas
Property: Willow Creek Residence | Architect: Studio MCM Designs
Project ID: MECH-2026-0422 | Date: March 27, 2026
Firm: Harland Mechanical Solutions | License: HVAC-MEC-88723 | Contact: (888) 555-0249
| Zone | System Type | Duct Size | CFM |
|---|---|---|---|
| Great Room / Kitchen | High-Velocity Mini-Duct | 8" round / 14x6 | 425 |
| Master Suite & Ensuite | Ducted Split System | 10" flex / 12x8 | 380 |
| East Wing (Beds 2-3) | Multi-Zone Heat Pump | 7" / 9" combo | 510 |
| Home Office / Library | ERV + Radiant Barrier | 6" supply / 6" return | 210 |
| Utility / Mechanical Core | Gas Furnace + Air Handler | 14" main trunk | 890 |
| Room | Length | Width | Ceiling | Notes |
|---|---|---|---|---|
| Entry Foyer | 12'-4" | 9'-8" | 10'-0" | Marble tile |
| Kitchen / Nook | 18'-6" | 14'-2" | 9'-6" | Island chase, 2 returns |
| Living Room | 22'-0" | 17'-8" | 10'-0" vaulted | Linear diffuser |
| Master Bedroom | 16'-10" | 14'-0" | 9'-0" | Walk-in closet chase |
| Guest Suite | 13'-2" | 11'-8" | 8'-10" | Mini-split head |
| Media / Flex Room | 15'-6" | 13'-4" | 9'-0" | Soundproof duct |
Radiant floor zones: Kitchen, Master Bath, Entry (3 loops) • Water heater: 75 Gal hybrid heat pump • 1" PEX-A manifold system • Panel: 320A w/ EV sub-panel • Smart thermostat pre-wire (6 zones)
Optimal mechanical efficiency index: 89.2% • ERV upgrade reduces thermal load by 14% • "Oak Ridge Model" 3,120 sq ft alternative layout with 4 additional supply branches. "Cedar Grove Estate" includes mechanical mezzanine of 285 sq ft with dedicated ERV core.