Manual T Air Distribution
Register and grille sizing for comfort and quiet operation.
What it is
Manual T selects the supply registers and return grilles for the air distribution system — the right throw, spread, and noise criteria for each room, given the Manual D airflows.
Who needs it
- High-end residential where occupant comfort is non-negotiable
- Projects where the AHJ asks for the full ACCA J/S/D/T package
- Any system where noise or drafty rooms have been a problem
What's included
- Per-room register/grille selection
- Throw, spread, and NC (noise criterion) per device
- Documentation page suitable for installer and inspector
FAQ
Is Manual T usually required for permit?
Not typically — but it's commonly requested on luxury and net-zero projects where comfort and acoustics matter.
Pairs well with
Most projects bundle Manual T Air Distribution with the services below.
Get a same-day quote on your load calculation.
Upload your plans, get a quote within hours, and receive a permit-ready report from a named, ACCA-certified designer.