Optimization & Maintenance15 / 17
Maintenance & Common Faults
Regular servicing, refrigerant leaks, superheat/subcooling errors, sensor drift.
10 min read · Jacob Willis, Net Zero Lead · Last reviewed July 2026
Refrigeration plant rarely fails loudly. It degrades: a film of dirt on a condenser here, a few hundred grams of refrigerant lost there, a sensor drifting a degree over a summer. The cooling still arrives, so nobody complains, and the electricity meter quietly absorbs the cost. Managing that degradation is worth 10 to 20% of a typical system's consumption, and this lesson covers the faults that matter, how they announce themselves, and the legal duties that come with refrigerants.
In this lesson
- 01The big four degradations
- 02Reading the machine's vital signs
- 03The legal layer: F-gas duties
- 04Sources and further reading