Check Your Gauge
Field Check Procedure Configure the Gauge Press Mode until the display shows pressure (Pa) on both channels (PrA & PrB). Turn Auto Zero off to stabilize readings during the test.…
Check Your DucTester’s Calibration
When to Perform the Check Every time you use a new DucTester unit Monthly if used frequently Or after approximately 20 tests Required Equipment DucTester fan Digital gauge (e.g., DM‑2…
Duct Leakage to Outdoors Depressurize with 2 Gauges
Step-by-Step Procedure Set Up Blower Door Install the blower door in an exterior doorway and depressurize the house to –25 Pa relative to outside. Connect Duct Tester Attach the DucTester fan…
Setting Device on the Gauge
Why Correct Device and Range Matter Your digital gauge (e.g., DM‑32 or DM‑2) must be configured to match: The connected equipment (e.g., blower door fan or DucTester model) The installed…
Jogging with @Pressure
Why Use @Pressure Jogging? Normally, you’d wait for the gauge to hit your exact pressure (say, 50 Pa) before recording airflow. But in leaky buildings or low-flow situations, that’s not always…
Duct Leakage to Outdoors: Is Even Harder Using One Gauge in Pressurization
Method Overview: One-Gauge Pressurization Unlike dual-gauge methods, this technique requires the tester to manually alternately measure house pressure and duct pressure with a single gauge: Set Up Equipment Connect the…
Conduct Test (with knob) – Step 4 in the DU200 DucTester QuickGuide
How to Perform the Test Prepare for Depressurization Connect the flex-duct flange to the duct inlet. Ensure all supply and return registers are properly sealed with grill mask. Configure the…
Choose Correct Range Ring
What Are Range Rings & Plates? Range rings (or plates) are restrictive attachments placed on the blower-door fan inlet. They narrow the airflow, increasing fan pressure, which improves measurement precision—especially…
Duct Leakage to Outdoors
Setup Procedure Blower Door Pressurization The blower door is installed and used to pressurize the house to +25 Pa relative to the external environment. This establishes a baseline pressure inside the…
Flow Too Low
Why your flow may read “too low” on your gauge and what to do about it. https://youtu.be/_j-393DPLdQ What “Too Low” Indicates This reading appears when the gauge thinks the airflow…