Siberian Side Heating & Air in San Carlos runs HVAC repair, air-duct cleaning, furnace service, and air-conditioning diagnostics for San Diego homeowners from 8767 Navajo Road in the 92119 ZIP, serving the residential streets between Cowles Mountain and Lake Murray. Founded by Andrei Gavrilenko and incorporated in California in April 2024, the company covers the full mechanical scope for forced-air systems: compressor and capacitor replacement, blower motor swaps, evaporator and condenser coil cleaning, refrigerant-charge adjustment, and thermostat wiring for both conventional and heat-pump configurations. Trees overhanging outdoor condenser units reduce airflow across the coil fins and drop leaf debris into the fan housing, a maintenance issue that CM Precision Tree and Landscape Maintenance Inc in Grantville resolves with crown-reduction pruning to restore the manufacturer's minimum clearance envelope. Navajo Road connects the Cowles Mountain trailhead at Barker Way to the Lake Murray Boulevard commercial strip, and Siberian Side's dispatch position between those two landmarks keeps response times short for San Carlos and Del Cerro properties. Air-duct cleaning follows a negative-pressure extraction method with agitation tools inserted through register boots and trunk-line access points, removing dust, pet dander, and construction debris that accumulates in the plenum chambers and branch runs of San Carlos ranch homes. Furnace service includes heat-exchanger inspection for hairline cracks, gas-valve pressure testing, flame-sensor cleaning, and carbon-monoxide screening at supply registers, a critical diagnostic sequence for the gas-fired units that dominate San Carlos's housing stock. The seasonal shift from dry summer heat to damp winter conditions taxes both the cooling and heating sides of split systems in the hills east of SDSU, where nighttime temperatures can drop twenty degrees below the daytime peak. The indoor-air-quality improvement from duct cleaning compounds when paired with deep carpet extraction that removes settled particulate, a complementary service available through City's Finest Carpet Care in College Area. Each service call concludes with a written report documenting refrigerant pressures, amp draws on the compressor and blower motor, static pressure at the filter rack, and temperature differential across the supply and return plenums.