Permit-Ready Manual J Load Calculations in Minutes
Generate accurate, inspector-approved Manual J reports so HVAC contractors can submit permit applications faster and avoid costly rework.
Start your free trial and upload your first load calculation with confidence.
Load Calc Guru
Contractor-ready permit workflow
Standardize every load calculation and permit packet with a single workflow that keeps your team moving forward, reduces rework, and makes plan review faster.
Permit-ready deliverables
Inspector-friendly reports
Fast Manual J setup
What contractors love
Speed, accuracy, and permit-ready outputs that help HVAC teams win approvals and close jobs faster.
Faster Permit Approvals
Submit detailed load calculations with confidence using standardized outputs tailored for code reviewers and permitting offices.
Built for Contractors
Designed specifically for HVAC installers and designers, so your team can move from field survey to permit packet without wrestling with spreadsheets.
Accurate, Code-Ready Deliverables
Built-in Manual J logic and permit-focused formatting reduce errors, inconsistencies, and inspector questions before you ever submit.
Clear Documentation for Inspectors
Provide transparent heat gain/loss breakdowns, equipment sizing, and ventilation details in a format inspectors recognize instantly.
Save Time on Rework
Avoid revisions and resubmissions with an automated workflow that catches permit-critical issues before the plan check stage.
How it works
A simple 3-step process to move from initial load inputs to permit-ready documentation.
Capture building data
Enter room layouts, loads, and equipment quickly with contractor-first inputs.
Validate sizing
Review Manual J load results and equipment recommendations before you submit.
Deliver permit-ready results
Create cleaner load documentation that reduces plan review cycles and rework.