Full residential load calculation + Manual D duct sizing + customer-ready PDF report. ASHRAE-based physics. Implements the ACCA Manual J 8 Abridged Edition method. Built by working contractors. Hosted on its own subdomain.
The calculator runs on its own subdomain at loadcalc.launchmyhvac.com. Whole-house block load, per-room distribution, AED check, latent load, equipment sizing, and customer-ready PDF. Free.
Design-assist for residential and small-commercial. Not ACCA-certified — cross-check against an ACCA-approved tool for code-strict permits.
Dispatch, jobs, estimates, invoicing, memberships, and AI diagnostics in one operating system built for HVAC service teams. Invite-only beta right now — request an invite and we’ll email you when a spot opens.