The £3m Knebworth Challenge

A luxury new-build near Knebworth. A failed MVHR system. An S-bend duct run that defeated every standard inspection tool — and left the homeowner relying on expensive infrared heating for over a year. TAD's bespoke 85mm micro-crawler went where push cameras couldn't, pinpointed a debris blockage 18 metres in with mathematical precision, and gave the owner everything they needed to make a single, targeted repair. The system is now running at 100%. Read the full case study.