Fifteen-plus years on refrigeration systems, residential built-ins and commercial alike. EPA-608 certified. Spent a decade on luxury cold-side brands – Sub-Zero, Thermador, Liebherr, Viking – across Denver and Boulder. Specialty: sealed-system diagnostics, compressor failures, and defrost-cycle issues other technicians cannot reproduce. The kind of technician who walks into a kitchen and listens to the fridge for thirty seconds before touching anything.