Operating on Shelter Island since 1995, Fleming Marine Refrigeration in Point Loma is a marine-specific HVAC and refrigeration contractor serving commercial and pleasure-vessel fleets along the marina basin. Onboard refrigeration builds use direct-expansion and engine-driven compressor systems alongside the marine-grade wiring that Marks Marine Electric runs for high-amperage cold-plate circuits. The shop fabricates and services chilled-water air-conditioning loops, ice makers, cool rooms, and blast-freeze fish holds—equipment categories rarely handled by land-based HVAC contractors. Condensing units on salt-water-cooled vessels require cupronickel heat exchangers and marine-rated contactors to resist the galvanic corrosion that accelerates in San Diego's warm harbor water. Hull-penetration work for raw-water intake lines runs in parallel with marine window and portlight refits at ShoreSight Marine Windows when vessels undergo full-refit haul-outs. The most complex scope is a commercial-fishing-vessel blast-freeze conversion, integrating multi-compressor rack systems with engine-driven standby and dock-power switchover.