HVAC Testing

Zagros Heating & Air Conditioning provides thorough HVAC testing services that keep your heating and cooling systems running efficiently. Our detailed testing methods catch potential issues early, saving homeowners and businesses from expensive repairs while maintaining comfortable indoor temperatures all year. Our NATE-certified technicians use advanced equipment to accurately assess your system's performance, airflow, and energy use. Since 2003, our family-owned business has earned trust across Northern Virginia by delivering reliable, precise solutions tailored to each property's specific needs. Our testing covers every HVAC component, from ductwork to thermostat settings, giving you full confidence in your climate control system.


Quality testing forms the foundation of optimal HVAC performance, which directly reduces energy costs and extends equipment life. The Zagros team brings over 40 years of combined industry knowledge to each job, ensuring evaluations that meet strict industry standards. We service all major brands including Carrier, Trane, Daikin, Lennox, Rheem, Honeywell, and Mitsubishi systems, allowing us to test any configuration effectively. As a minority-owned business with Persian-speaking staff, we make quality HVAC services accessible to our diverse community. Our work comes with a two-year workmanship warranty and a 100% satisfaction guarantee on all services. Ask about our special pricing for military personnel, veterans, first responders, and senior citizens. For dependable HVAC testing that ensures comfort and safety, contact us

HVAC Test and Balance

HVAC test and balance services create consistent comfort throughout your property. Our technicians measure and adjust airflow at each vent, verify system pressure, and calibrate controls for optimal balance. This precise adjustment eliminates temperature variations, improves air quality, and maximizes efficiency by ensuring your system performs as designed.