Our Services

Our independent services include comprehensive HVAC testing, adjusting, and balancing, along with system verification for air and hydronic equipment, exhaust and makeup air systems, cleanrooms, labs, fire life safety and specialized environments. We provide precise performance measurements, troubleshoot airflow issues, confirm equipment operation, and certify that each system meets design intent and industry standards—all without any manufacturer or contractor affiliation.

Total System Balance

Our Total System Balance service ensures the entire HVAC system, airside and waterside, operates as a unified, efficient whole. We verify airflow, water flow, equipment performance, and control coordination across all components, ensuring proper pressures, even distribution, and full compliance with design specifications.

Title 24/ATTCP & Ventilation Verification

California Title 24 and ventilation verification services, ensuring all systems meet California Energy Code requirements for performance, airflow, filtration, and mechanical ventilation. Our TABB certified technicians verify that equipment is properly installed, balanced, and compliant, delivering accurate documentation for permit closure and project compliance.

Duct Pressure Testing

CIRCO performs duct pressure testing to verify ductwork integrity, locate leakage points, and ensure compliance with Title 24 and SMACNA standards. 

Commercial ​Kitchen Certs For Health Departments

Commercial kitchen ventilation certifications in accordance with local Health Department requirements. Our services include verification of grease hoods, makeup air systems, dishwashers, and all required pressure relationships to ensure a safe, compliant, and properly functioning commercial kitchen. We deliver accurate testing, detailed documentation, and clear recommendations to support permit approval and ongoing code compliance.

Fire Life Safety

Comprehensive Fire Life Safety services, including fire damper inspections, stairway pressurization testing, and smoke control system verification. Our team ensures all components operate safely and in accordance with NFPA 90 and all applicable code requirements. We have also provided Fire Life Safety training for the Sacramento Fire Department, reinforcing our commitment to expertise, accuracy, and real-world operational safety. We deliver detailed reporting, functional testing, and compliance documentation to support safe building operation and successful inspections.

Fume Hood/ASHRAE 110 Testing

We test and balance laboratory fume hoods to ensure proper exhaust performance, capture efficiency, and safe operation. Our services verify airflow rates, face velocities, and pressure relationships, helping prevent smoke, odor, or contaminant migration while maintaining compliance with ASHRAE 110, laboratory, and building code standards.

Cleanroom, Lab & Hospital Room Verification

Precise verification of cleanrooms, laboratories, and hospital spaces to ensure they meet strict airflow, pressurization, and air change requirements. Our testing includes differential pressure checks, air change rate calculations, supply and exhaust verification, and filtration performance assessments to maintain safe, controlled environments that comply with healthcare, laboratory, and industry standards.

Building Pressure Testing

Our building pressure testing verifies proper pressure relationships between interior spaces and the outdoors to ensure controlled airflow, energy efficiency, and code compliance. This service includes measuring static and dynamic pressures, identifying imbalances, and confirming that ventilation, exhaust, and makeup air systems operate together to maintain stable and safe building pressurization.