Total Duct Leakage Testing
Measures the cumulative air leakage from the entire duct system without isolating leaks to any particular area
Helps assess overall duct tightness and energy efficiency
Involves pressurizing or depressurizing ducts and measuring airflow loss
Critical for identifying potential energy waste and comfort issues in HVAC systems
Leakage to Outdoors Testing
Specifically quantifies duct leakage that allows conditioned air to escape outside the building envelope
Requires isolating the duct system from the conditioned space to distinguish outdoor leakage
More challenging than total leakage testing but provides vital data for code compliance and system optimization
Helps prioritize sealing efforts to reduce energy loss and improve indoor air quality
Other Tests with Blower Door
Blower doors can perform additional tests such as building envelope leakage and compartmentalization assessments
Useful for understanding whole-building air tightness in relation to duct leakage
Supports comprehensive diagnostics for energy audits, commissioning, and code compliance
