§ Sheet CL / 06 · Free calculator
MANUAL J LOAD CALCULATOR LITE
FOR HVAC CONTRACTORS.
Fast cooling-load sanity check (BTU/h + tons) — not a full ACCA Manual J.
§ Run it
Manual J Load Calc · Lite
A fast cooling-load sanity check. For a real Manual J — room-by-room, load-corrected, latent-aware — use Estimate.Pro Pro inside the app.
§ Results
Total cooling load55,400BTU/h
Suggested system size4.6tons
Per-sqft load31BTU/h/ft²
Sanity check only — a whole-home heuristic, not a certified ACCA Manual J. Use a full room-by-room load calc for permits and equipment selection.
Save this math to estimates, projects, and AR captures with a free Estimate.Pro account.
Create free account§ Built for HVAC contractors
WHY IT MATTERS.
Manual J Load Calculator (Lite) is one of the must-have tools for anyone bidding hvac service work. Inside Estimate.Pro it’s wired into the line-item engine so your output becomes a sendable bid in the same session — not a number copied off a calculator into a spreadsheet.
HVAC Service overview§ Equip the crew
Your measurements, in your bid.
Create a free account to sync saved calculator results and AR captures into Estimate.Pro.