Stop Changing Parts.
Start Diagnosing Faults.

Books, Apps & Training for Heating Engineers from George Staszak — 45 Years on the Tools.

45+

Years
Practical
Experience

I created these resources to help engineers work smarter, not harder.

George Staszak Mr Combi®

200+ Free Training Videos
on YouTube

YouTube

Latest Training Videos on YouTube

Work SMARTER with our Apps

Why Installers Replace Parts Hoping to Cure a Fault — and Fail

Error Code? Don't Panic — We Have an App for That

Why Boilers Fail Without an Auto Bypass Valve

Is Your Pressure Right? Check and Fix It — It's Easy

Popular Faults That Are Easy to Fix Before You Call

Boilers Are Ruined by Old Controls

Boiler Servicing: The Dangerous 15-Minute Con