About
Built by a heating engineer who got tired of learning on customers’ systems
I am Myron Lambert, a heating engineer. Controls are where jobs go wrong: a switched live on the wrong block, a valve that opens but never makes its end switch, a cylinder stat wired to the satisfied terminal. I learned those the expensive way, on other people’s systems, and I made the videos so other people would not have to.
Videos explain. They cannot let you be wrong. DrawWarm is the thing I wanted at nineteen: a wiring centre where every terminal knows whether it is live, neutral or earth, a meter that reads what the circuit is doing, and a pile of real call-outs to get wrong at 11 pm with nobody watching.
It is one person’s product. If you email, I answer. If a lesson is wrong, I fix it. If a college needs a report, I build it.
Machine-tested
What the test harness proves before anything ships
Every lesson, challenge and fault in DrawWarm is run by a test harness in the real engine before a release. These are the latest results.
| Check | Result |
|---|---|
| Every lesson replayed as a perfect student in the real engine | 45 of 45 |
| Every diagnosis challenge run end to end | 5 challenges, 50 of 50 checks |
| Every fault’s symptom proven on every circuit it fits | 477 of 477 |
| The electrical core against the S-Plan and Y-Plan truth tables | 31 of 31 |
| Random Fault mode, round after round | 438 of 438 |
Roadmap
Where this is going
Now
The founder launch for individual engineers and apprentices, at the launch price.
January 2027
Free pilots for colleges: two seats, one group, one week, a tutor report at the end.
September 2027
Organisation licences for colleges, training centres and employers, in packs of 10 seats.
Every month
A new fault or lesson, machine-tested before it ships, sent to everyone on the list.
Founder video
Forty seconds on why
Founder video · 40 seconds · to be recorded