HVAC Load Calculation Software Built for Contractors
Fast, accurate load sizing and contractor-friendly reporting that streamlines permit submissions and reduces costly field changes.
Start your trial and build permit-ready jobs every time.
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.
Contractor workflow
Accurate sizing
Team-ready process
What contractors love
Speed, accuracy, and permit-ready outputs that help HVAC teams win approvals and close jobs faster.
Contractor-Friendly Interface
Work in a workflow made for HVAC pros: quick building inputs, equipment selection, and report generation without unnecessary complexity.
Speed Up Project Turnover
Generate full load calculations in minutes and get permit-ready documents out the door faster than traditional methods.
Minimize Change Orders
Accurate sizing and permit-focused reports reduce the chance of inspector rejections, saving labor, material, and time.
Built for Permit Workflows
Outputs include permit-ready summaries, equipment schedules, and compliance details that align with inspection and plan check expectations.
Scalable for Teams
Share consistent calculation standards across your crew so every technician delivers the same high-quality, permit-ready result.
How it works
A simple 3-step process to move from initial load inputs to permit-ready documentation.
Set up the job
Create a project and enter building details in the contractor-friendly workflow.
Size equipment accurately
Use load calculations to choose the right system and avoid oversizing.
Deliver permit docs
Generate consistent reports and checklists that support your permit submission.