Short, focused CPD and reassessment courses for engineers already on the tools — buy just what you need, or get the lot.
Gas ACS reassessment, unvented hot water, Water Regulations, and more on the way — or take the whole suite.
A single course is £29.99 for 60 days. The suite is £59.99 a year and unlocks every course, including new ones as they launch.
Each lesson has teaching, diagrams, a quiz, short-answer questions marked instantly, and hands-on labelling and system-building exercises.
Everything you do is saved to your account. Pass each part at 85% (100% for gas) to tick it off — the progress panel shows what's left.
All five ACS categories — CCN1, CKR1, HTR1, CENWAT1, CPA1 — with lessons, quizzes, flashcards and self-tests. Pass each at 100%.
Nine lessons on the whole unvented system, with quizzes, AI-marked short answers, and hands-on labelling and system-building exercises.
38 lessons across 13 modules — fluid categories, backflow protection, air gaps, cisterns and notification, with interactive tasks and a full revision hub.
47 lessons across 7 modules — principles, system design, regulations, survey, installation, commissioning and fault finding, with 12 interactive tasks. The tasks are free to try without an account.
44 lessons across 7 modules — the resource and collectors, system types, survey and sizing, regulations, installation, commissioning and fault finding, with 11 interactive tasks. The tasks are free to try without an account.
48 lessons across 7 modules — floor constructions and coverings, manifolds and controls, design calculations, installation practice and commissioning, with 11 interactive tasks. The tasks are free to try without an account.
53 lessons across 7 modules — heat loss, emitter sizing at 45/40, hot water, pipework and pumps, hydraulic separation and commissioning, with 13 interactive tasks. The tasks are free to try without an account.
New to the app? These walk you through each screen, step by step. You can also tap the ? in the header of any screen at any time.
The home and course tours need you to be signed in (they run on pages behind the login). The login tour works for anyone.