Tradesmithery · a visual academy for HVAC

See how HVAC works. And why.

Each system drawn as a working machine you can open up: every component, what it does, how it does it, and why it is there. Member sign-in

Members see this running. Every part clickable, the sequences step by step, and each one cut open. Subscribe to get in.

A cutaway section of a house showing the outdoor unit, the furnace and coil in the basement, the ducts, and air moving through the living room.
A still. Members get it live.

Learn the why, not just the what.

Anyone can memorise that the capacitor starts the compressor. Members see why a single-phase motor cannot start without it, how the phase shift does the job, and what happens the day it fails — on the running machine, not on a slide.

  • The whole system, running. Watch a cooling call and a heating call travel through the machine step by step — thermostat, contactor, compressor, coil, burner, blower — so the sequence makes sense as one thing, not a list to remember.
  • Every component, explained three ways. What it does. How it does it. Why it is there — the problem it solves, and what goes wrong without it.
  • Every part cut open. The contactor pulling in, the capacitor's terminals, the expansion valve's pin, the blower wheel — drawn open beside its card while the machine keeps running around it.
  • Follow the refrigerant, the air, the gas and the flue. Colour shows the state at every point in the loop, so you see why pressure and temperature change where they do.
  • Built for understanding, not memorising. Exam questions and no-cool calls both come down to why. That is what this is for.
  • On your phone. Cancel anytime. Nothing to install; you keep access to the end of the period you paid for.

$39/ month

Then $39 / month · full access · cancel anytime

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Questions

What is Tradesmithery?

A visual academy for HVAC. Each system is drawn as a working machine you can open up, and every component in it is explained three ways: what it does, how it does it, and why it is there. Today that is the residential split system — outdoor unit, gas furnace and coil — with every part clickable.

What do I get the moment I subscribe?

The members' page opens right after payment on the device you paid from: the split system running, every sequence, every part cut open beside its card. A sign-in link is also emailed so you can open it anywhere.

Can I cancel?

Yes, anytime. You keep access to the end of the period you paid for.

Will this help with my exams?

Yes — understanding how the system actually works is what the questions test. But it's built for true understanding, not memorising answers.

How is this different from YouTube?

A video shows you what happens. Here you can stop the machine on any part, open it, and read why it does what it does — while the whole system keeps running around it.

$39/mo · cancel anytimeSubscribe →