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CHAPTER 5
CONDUCTING A BLOWER DOOR DEPRESSURIZATION TEST
5.1 Choosing a Test Procedure
5.2 Depressurization Test Procedures Using the DG-700
5.3 Depressurization Test Procedures Using the DG-3
5.4 Using the Can't Reach 50 Factors (One-Point Tests)
5.4.a Potential Errors In One-Point CFM50 Estimate from Using the CRF Factors:
5.5 Unable to Reach a Target Building Pressure During a Multi-Point Test?
5.6 Testing in Windy Weather
5.7 Before Leaving the Building
CHAPTER 6
BASIC TEST RESULTS
6.1 Basic Airtightness Test Results
6.1.a Air Leakage at 50 Pascals:
6.1.b Normalizing Air Leakage for the Size of the House:
6.2 Optional Correction for Air Density
6.3 Additional Test Result Options (requires use of TECTITE software)
6.3.a Leakage Areas:
6.3.b Estimated Natural Infiltration Rates:
6.3.c Mechanical Ventilation Guideline:
6.3.d Estimated Cost of Air Leakage:
CHAPTER 7
PRESSURIZATION TESTING
7.1 Gauge Set-Up For Pressurization Measurements
7.1.a DG-700 and DG-3 Gauges:
7.1.b APT System:
7.2 Fan Set-Up For Pressurization Measurements
7.3 Optional Correction for Air Density
CHAPTER 8
FINDING AIR LEAKS
8.1 Using Your Hand
8.2 Using a Chemical Smoke Puffer
8.3 Using an Infrared Camera
8.4 Diagnosing Series Leakage Paths
CHAPTER 9
TESTING FOR DUCT LEAKAGE AND PRESSURE
IMBALANCES
9.1 Duct Leakage Basics
9.1.a Why Is Duct Leakage Important?
9.1.b Where Does Duct Leakage Occur?
9.1.c How Much Can Energy Bills Be Reduced By Sealing Duct Leaks?
9.1.d Duct Leakage to the Outside:
9.1.e Duct Leakage to the Inside:
9.2 Finding Duct Leaks to the Outside
9.2.a Smoke Test:
9.2.b Pressure Pan:
9.3 Estimating Duct Leakage to the Outside With a Blower Door
9.3.a Modified Blower Door Subtraction:
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