How much does a Manual J cost in 2026?

Three ways to get a Manual J, three very different bills:

Option	Typical price	Turnaround
Per-report calc services	$79–$300+ per house	48 hours – 2 weeks
DIY software license	$400–$600+/year, plus training time	Hours per house once learned
HVAC designer / engineer	$300–$800+ per project	Days to weeks
Instant Manual J (at launch)	$49 per report	About an hour

Why the spread? The traditional per-report price is mostly paying for a human to re-type your house into desktop software. Larger houses, room-by-room detail, and add-ons like Manual S or D push the price up; multi-week turnarounds are the queue, not the math.

What to watch for at the cheap end: “block load only” reports (no room-by-room table — some permit offices reject these), national-average design temperatures instead of your county's, and revision fees when the plan reviewer pushes back.

Need the actual report, not a lecture?

Instant Manual J turns your floor plan into a permit-ready, room-by-room ACCA Manual J load calculation in about an hour — $49 at launch, first report free for the founding list.

Get early access