LUND CARDS · THE HOMEBUILDERNº 1696
THE ENERGY RATER
blower-door and duct-test numbers worked — ACH50, a multipoint fit and leakage per 100 sq ft — each against the target you enter
CFM50 · ACH50 · MULTIPOINT · DUCTS · TARGETS
LEGENDARYWITNESSED
THE HOMEBUILDER · THE KEYS · Nº 1696 · EDITION 1 ·Liquid error (snippets/job-room line 27): comparison of String with 0 failed
THE ENERGY RATER · AI SKILL CARD · ONE PAYMENT
BUY NOWAdds it to your cart · your card comes by email after checkout · nothing renews
THE SPEC SHEET · READ BEFORE YOU BUY · THE STANDARD EVERY CARD MEETS →
- SEAL
- 98 of 100 · LEGENDARY · WITNESSED
- EDITION
- E1 · cut 2026-10-21
- MACHINE
- scripts/blower.py · selftest 12/12
- RUNS
- On your own computer. Standard library only, offline; no account, no key, no telemetry.
- HOSTS
- Claude · Claude Code · ChatGPT · Gemini · any AI that reads a file (START-HERE.md and system/ name each door)
- LICENCE
- One person, any number of their own AIs and computers · editions replace files · nothing renews
- PUNCH
453DB2B4D240C6F1BE14E069· sha-256 of SKILL.md · check any file against it →
What it is.
Blower-door and duct-test numbers worked — ACH50, a multipoint fit and leakage per 100 sq ft — each against the target you enter. Use when a rater needs blower-door or duct-test results worked against a target. Not for skipping a permit, or sizing structure itself. For air sealing → THE INSULATION I
The whole card — when it wakes, its loop, what it never does, its machine and everything in its box — prints here the day it goes on sale.
Take it.
Nº 1696 —Liquid error (snippets/job-room line 44): comparison of String with 0 failed
Sold as is under the term printed. A card instructs an AI you operate; results depend on your model, your files and your judgement. Not medical, legal, tax or financial advice, never the person’s boss, and not a licence to practise. The terms →
ONE PAYMENT · NOTHING RENEWS ITSELF
OFFLINE · ONE LICENCE · PUNCH-CHECKABLE · THE STANDARD
One payment. The file is yours to keep and keeps working at its edition; new editions issued in the year after you buy reach you by email as replacement files. Tax is added at checkout where it applies. Nothing auto-renews.
AFTER YOU PAY · SIGN IN WITH THE EMAIL YOU PAID WITH · THE CARD OPENS ON MY CARDS → · CHECKED AGAINST ITS FINGERPRINT · NOTHING TO WAIT FOR
← THE HOMEBUILDER · THE FLOOR →
AT YOUR ELBOW, NEVER THE BOSS · NOT LEGAL, MEDICAL, TAX OR FINANCIAL ADVICE · NOT A PAYMENT CARD · © 2026 LUND STUDIO LLC