Built for the moment when the field stops matching the plan.
TinnerFlow™ is a commercial HVAC / sheet metal field rescue and learning tool for apprentices. It is built around jobsite communication: what to check, what not to touch, and how to ask the foreman a clean question before a mistake gets buried behind ceiling tile.
Currently free while in field testing
What TinnerFlow is
- A field communication tool for apprentices.
- A plain-English route bank for duct, access, finish work, hangers, dampers, coordination, and red-zone checks.
- A script helper so you can ask the foreman without rambling.
- A training reference for studying after the field problem is handled.
What TinnerFlow is not
- Not job approval.
- Not a ductulator.
- Not a code book or engineering stamp.
- Not a substitute for approved drawings, specs, manufacturer instructions, employer policy, AHJ/local code, or foreman direction.
Trade credibility without fake authority
TinnerFlow is written from commercial HVAC / sheet metal field experience and built to reflect how apprentices actually get stuck: bad access, wrong conditions, mismatched drawings, blocked paths, missing measurements, hidden dampers, and fear of asking the wrong question.
It intentionally uses a safety boundary: the route helps you slow down and ask better; it does not approve the work.
Why the site is free right now
TinnerFlow is currently public and free while the route bank, mobile flow, search behavior, and field language are being tested with real trade feedback. Paid products, accounts, or contractor features may come later, but the public field tool is not collecting payment right now.
Findable without JavaScript
Field Rescue is still the fastest way to search. For search engines, low-JS browsers, and printing, the static route index gives every route a plain HTML page.