San Diego Heating & Air Conditioning in downtown San Diego handles heating, AC, and ventilation work from Tenth Avenue in the East Village, steps from Petco Park. The company's repair scope covers forced-air furnaces, heat pumps, and rooftop package units across East Village's residential and commercial mix — system replacements that frequently align with the remodel timelines Back's Construction Inc manages during tenant improvements. AC repair calls in the Petco Park corridor spike during Padres season when restaurants and bars push their cooling systems to capacity, a demand pattern that requires fast compressor and fan-motor diagnostics to keep dining rooms at code-compliant temperatures. New-construction HVAC installations in East Village ADU projects require Manual J load calculations, duct design, and Title 24 energy modeling before the City issues a mechanical permit — a permitting sequence that runs parallel to the structural drawings ADUPALS produces for accessory dwelling unit builds. Full commercial changeovers for East Village restaurant spaces represent the most complex scope, replacing exhaust-tied HVAC systems while maintaining kitchen ventilation compliance and coordinating crane lifts for rooftop condenser placement.