ANSI/ACCA 2 MANUAL J (8TH EDITION) · ANSI/ACCA 3 MANUAL S · MANUAL D
ACCA Manual J + Manual S Load & Equipment Sizing Reports — $129 Flat
Under IRC Section M1401.3 and IECC Section R403.7, residential heating and cooling equipment must be sized using ACCA Manual J and selected using ACCA Manual S. We prepare full room-by-room load calculations and OEM equipment capacity verifications within 24 hours.
What Every Manual J8 + Manual S Report Includes
- ASHRAE / ACCA Design Conditions: Exact 99% heating dry bulb, 1% cooling dry bulb, coincident wet bulb, daily temperature range, elevation, latitude, and indoor design targets (70°F heating / 75°F cooling at 50% RH).
- Component Load Breakdown: Sensible and latent heat gains/losses across walls, ceilings, floors/slabs, windows by orientation, doors, infiltration (ACH), ASHRAE 62.2 mechanical ventilation, internal occupants/appliances, and duct distribution.
- Adequate Exposure Diversity (AED): Hourly fenestration solar load curve verifying whether west/east glass creates peak afternoon room excursions.
- Room-by-Room Load & CFM Schedule: Individual room heating BTUh, sensible cooling BTUh, latent cooling BTUh, and design supply airflow (CFM) for every conditioned space.
- ACCA Manual S Equipment Selection: Verifies that the proposed heat pump, furnace, or air conditioner meets sensible, latent, and total capacity limits (90%–115% for single-stage; 90%–130% for variable-capacity inverter systems).
Need ACCA Manual D Duct Design Too?
If your building department requires a complete J + S + D mechanical submittal, choose our Full Permit & Duct Package ($249), which adds:
- Available External Static Pressure (ESP) budget worksheet deducting coil, filter, grille, and damper pressure drops.
- Longest supply and return run Total Effective Length (TEL) calculation with fitting equivalent lengths.
- Design Friction Rate (IWC per 100 ft) and trunk/branch duct diameter schedule with air velocities (FPM).