Professional HVAC Calculations. Permit Ready. Delivered Fast.
Manual J, Manual S, Manual D, and REScheck compliance certificates. We act as your external HVAC engineering department, delivering calculations tailored for New Jersey building inspection.
Thermal Load Calculations
Detailed room-by-room ACCA Manual J load sizing
Permit-Ready Compliance Documentation
Every package is designed to meet strict local municipal submittal requirements and ACCA standards.
ACCA Manual J Load Calculation
Calculates room-by-room heating and cooling loads based on local climate design temperatures, envelope insulation, windows orientation, infiltration, and occupant loads.
ACCA Manual S Equipment Selection
Verifies that the selected HVAC equipment matches the calculated sensible and latent loads, selecting heating capacity and airflows based on manufacturer performance data.
ACCA Manual D Duct Design
Computes proper duct sizes, static pressure drops, and airflow parameters (CFM) for each register to guarantee uniform ventilation and thermal balance throughout the building.
REScheck Energy Compliance
Verifies building envelope energy efficiency limits (insulation R-values, window performance U-values) to meet strict New Jersey energy compliance regulations.
Municipal Review Support
In case local building subcode reviewers issue comments or ask for calculation revisions, we handle them directly with no additional fee to ensure you obtain your construction permit.
Permit-Ready Packages
You receive clean, organized PDF compliance files containing structural calculation results, loads breakdowns, and hardware data logs ready to submit to building officials.
We Are Your External HVAC Engineering Department
AirCalc is not just a software tool or an automated calculator. We are an specialized HVAC calculations engineering service. Our technicians review architectural plans manually, apply ASHRAE and ACCA formulas, verify local compliance with New Jersey Uniform Construction Code, and deliver permit-ready reports.
How We Calculate Your Project
From plan review upload to municipal permit approval, we verify compliance at every milestone.
Request Project
Start by entering building layout parameters, conditioned area, and contact details.
Upload Plans
Upload architectural blueprints in PDF, DWG/CAD, or readable image formats.
Select Service
Choose between Manual J (loads), Manual S (equipment), Manual D (ducts), or the full JSD + REScheck package.
Technical Review
Our technicians verify plans, solar orientation, insulation U/R values, and local design temperatures.
Calculations
We run precise heating and cooling load computations following ACCA and ASHRAE standards.
Quality Control
A senior engineer validates and reviews the calculation results to certify optimizations.
Report Generation
We compile final files, room-by-room load details, and submittal summaries.
Client Delivery
Receive final certified and signed digital reports ready for municipal building code submittal.
Municipal Support
If the construction code official issues comments or objections, we revise calculations at no extra cost.
ACCA Calculation Pricing Estimator
Drag the slider to input the total conditioned square footage of your project and see instant package estimates.
Manual J (Loads Only)
Room-by-room heating & cooling loads
- ✔ Winter & Summer Design Loads
- ✔ Envelope Heat Loss & Gain Sizing
- ✔ NJ UCC Construction Permit Compliant
Manual J/S/D Package
Manual J + Manual S + Manual D
- ✔ Everything in Manual J Sizing
- ✔ Manual S Equipment Verification
- ✔ Manual D Duct Sizing & Static Pressure
- ✔ Support During Municipal Plan Review
Disclaimer: Disclaimer: Final quotes may vary slightly based on layout complexity, multiple HVAC zones, custom ceiling heights, or additions requiring separate heat transfer parameters.
What You Receive in Your Report Pack
Every document is compiled to standard submittal format, minimizing review delays by building officials.
Manual J Load Summary
Total heating/cooling loads, peak sensible and latent gains, design criteria calculations.
Equipment Sizing (Manual S)
Performance sizing check verifying equipment selection meets cooling/heating capacities.
Duct Layout (Manual D)
Total external static pressure limit, airflows CFM list, duct size allocations.
REScheck Energy Audit
Energy code compliance certificate indicating building envelope pass margins.
Room-by-Room Load Breakdown
Individual load calculations for each room/zone to optimize HVAC balance.
Equipment Performance Logs
Sensible heat ratios, fan curves, and specific manufacturer ratings verification.
Request a Free Calculation Quote
Provide your details and upload project drawings to receive a custom design review.