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About Big O Mechanical LLC
Big O Mechanical LLC operates as a licensed HVAC contractor serving Sacramento-area homeowners with a perfect 5-star rating earned across 13 verified client reviews. Founded in the Sacramento market, this locally operated company specializes in residential heating and cooling system installation, repair, and maintenance for properties across the greater metropolitan region. Their service area encompasses multiple communities throughout the Sacramento Valley, providing both routine seasonal maintenance and urgent repair response to homeowners experiencing system failures.
Unlike franchise HVAC companies that rely on standardized approaches, Big O Mechanical tackles unconventional projects including vintage wall furnace conversions in homes dating back six decades or more. The team modifies existing heating infrastructure, rerouting gas lines and installing contemporary high-efficiency units in spaces previously considered impractical for modern equipment upgrades. Their commitment to thorough diagnostics means each repair begins with systematic identification of root causes rather than surface-level symptom treatment.
What Customers Say
All 13 reviewers awarded 5-star ratings, with three clients specifically naming technicians Omar and Orlando. Four reviewers reference same-day or weekend emergency response, while two customers highlighted the team's patience with elderly homeowners during extended installations.
Services
Air Conditioning Repair & Maintenance
Diagnostic services, refrigerant recharging, component replacement, and preventive tune-ups for all residential cooling systems.
Heating System Installation & Repair
Furnace and heater installation, vintage system upgrades, gas line routing, and comprehensive heating repairs.
Wall Furnace Service
Specialized cleaning, troubleshooting, and restoration of traditional wall-mounted heating units common in older properties.
Emergency HVAC Response
Same-day and weekend availability for urgent heating and cooling system failures requiring immediate attention.
System Upgrade & Retrofit
Modern high-efficiency system installation in properties with aging infrastructure, including attic and unconventional placements.
Ventilation & Ductwork
Custom vent installation, duct modifications, and airflow optimization for new and replacement heating systems.
Diagnostic Assessment
Thorough system evaluation identifying root causes rather than symptoms, with detailed explanation of findings.