Manual J — $249. Room-by-room loads, from your plans.
Your Washington permit needs an ACCA Manual J for HVAC sizing (IRC M1401.3) alongside the WSEC-R compliance package. Order it here; it is prepared from your plan set and delivered in two business days.
Prepared by an ICC-certified Residential Plans Examiner — the same certification your building department's reviewer holds.
Pick your home size and pay
Tiers are conditioned floor area from your plan set. If your drawings land in a different tier than you paid for, we tell you before starting and refund or invoice the difference.
Over 6,000 sq ft or three or more systems: email hello@wsec.ai with the plan set for a quote. Secure checkout by Stripe; the confirmation page tells you where to send your plans.
What you get
- Room-by-room heating and cooling loads plus whole-house totals
- Envelope assemblies, window schedule, and orientation taken from your drawings — not estimated from square footage
- Design temperatures matched to your jobsite
- Calculated in ACCA-approved software
- Examiner notes tracing each input to the plan sheet it came from, so the reviewer can verify it without a phone call
- Revisions free until your building department accepts it
Manual J, Manual S, and Manual D
Manual S and Manual D are not sold on their own — Manual S sizes equipment from the Manual J loads, and Manual D lays out ducts from the Manual J loads and the Manual S equipment selection.
How it works
- Pay for your size tier above
- Send the plan set as PDF (floor plans, elevations, window schedule, wall/ceiling/floor assembly notes) and the jobsite address
- Report delivered within two business days
- If the department kicks it back, we revise free until it clears
Need the WSEC-R compliance side too? That is what the wizard and plan review are for. Manual J is the HVAC sizing document; it does not replace either.