MacDonald-Miller provides Testing, Adjusting, and Balancing (TAB) services backed by decades of experience in mechanical systems. Our in-house NEBB-certified specialists and team of licensed professionals serve commercial and critical environment facilities across the Pacific Northwest.
TAB
Testing, Adjusting, Balancing
Code Support
Support code and inspection readiness for ventilation, pressurization, and life safety systems
Occupant Comfort
Improve occupant comfort by addressing airflow, hydronic flow, pressure, and temperature issues
Energy Savings
Reduce wasted energy by ensuring systems are not overworking or underperforming
Services
Calibrating terminal units
Proportioning outlets
Capacity verification
Building pressure profiling
Ventilation verification
Fan testing
Chilled water balance
Condenser water balance
Domestic recirculation balance
Terminal proportioning
Pump verification
Non-invasive flow readings (transit-time)
Ultrasonic pipe thickness analysis (asset life insight)
CO / CO2 calibration and monitoring
Air change (ACH) verification
Sound testing with NC graph analysis
Property line noise surveys
Troubleshooting acoustic issues
Stairwell and hoistway pressurization testing (SC-1 Seattle)
Smoke control testing (including Bellevue requirements)
Annual Fire & Smoke Damper (FSD) certification (RCW 19.27.710)
Annual confidence testing of pressurization systems
Healthcare and Department of Health compliance (ACH & pressurization)
AAALAC International reporting
Laboratory pressure setup and commissioning
Fume hood valve startup (Antec systems)
Positive/negative airflow verification across barriers
Duct leakage testing (new and existing systems)
Underfloor air system testing
Envelope integrity testing
Thermography
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