Uploaded July 2025 | Updated September 2026, 2 weeks ago
Learn about Proper Use of Manometers for HVAC Technicians and system commissioning in this comprehensive hands-on training session. Whether you're a new technician or looking to master static pressure measurements, this video covers everything you need to know.
What You'll Learn:
Manometer Basics:
Why many techs avoid using manometers and how to overcome those barriers
Understanding water column measurements and pressure conversions
Proper zeroing techniques and precision requirements
Static Pressure Fundamentals:
What static pressure actually measures (resistance to airflow)
The difference between positive and negative pressure readings
Why static pressure is like balloon pressure
Diagnostic vs. Efficiency Testing:
External Static Pressure: Measuring equipment strain for efficiency analysis
Diagnostic Testing: Using pressure drops across coils and filters
Proper probe placement for accurate readings
Hands-On Demonstrations:
Live measurements on actual equipment
Filter pressure drop analysis (dirty vs. clean)
Coil pressure drop testing
Troubleshooting high return/low supply scenarios
Key Takeaways:
External static pressure should be measured above the filter and above the blower
Lower static pressure = less resistance = better efficiency
Practice makes perfect - the more you measure, the better you understand normal ranges
Don't let perfection prevent you from taking measurements
Practical Applications:
Setting proper fan speeds using factory charts
Calculating CFM per ton (Florida target: 350 CFM/ton)
Identifying dirty coils through pressure differential
Diagnosing airflow issues and system strain
Why This Matters:
Understanding manometer use is crucial for proper system commissioning, efficiency optimization, and accurate diagnostics. This training will help you move beyond basic pressure readings to truly understanding what your measurements mean for system performance.
Read all the tech tips, take the quizzes, and find our handy calculators at hvacrschool.com or the HVAC School Mobile App on the Google Play Store (hvacrschool.com/play-store) or App Store (hvacrschool.com/app-store).
Learn about Proper Use of Manometers for HVAC Technicians and system commissioning in this comprehensive hands-on training session. Whether you're a new technician or looking to master static pressure measurements, this video covers everything you need to know.
What You'll Learn:
Manometer Basics:
Why many techs avoid using manometers and how to overcome those barriers
Understanding water column measurements and pressure conversions
Proper zeroing techniques and precision requirements
Static Pressure Fundamentals:
What static pressure actually measures (resistance to airflow)
The difference between positive and negative pressure readings
Why static pressure is like balloon pressure
Diagnostic vs. Efficiency Testing:
External Static Pressure: Measuring equipment strain for efficiency analysis
Diagnostic Testing: Using pressure drops across coils and filters
Proper probe placement for accurate readings
Hands-On Demonstrations:
Live measurements on actual equipment
Filter pressure drop analysis (dirty vs. clean)
Coil pressure drop testing
Troubleshooting high return/low supply scenarios
Key Takeaways:
External static pressure should be measured above the filter and above the blower
Lower static pressure = less resistance = better efficiency
Practice makes perfect - the more you measure, the better you understand normal ranges
Don't let perfection prevent you from taking measurements
Practical Applications:
Setting proper fan speeds using factory charts
Calculating CFM per ton (Florida target: 350 CFM/ton)
Identifying dirty coils through pressure differential
Diagnosing airflow issues and system strain
Why This Matters:
Understanding manometer use is crucial for proper system commissioning, efficiency optimization, and accurate diagnostics. This training will help you move beyond basic pressure readings to truly understanding what your measurements mean for system performance.
Read all the tech tips, take the quizzes, and find our handy calculators at hvacrschool.com or the HVAC School Mobile App on the Google Play Store (hvacrschool.com/play-store) or App Store (hvacrschool.com/app-store).
