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This video webinar discusses residential duct testers and components, including: 

• ICC requirements vs. local jurisdictions
• Who can perform the duct test
• Duct Testing - Total Leakage
• Duct Testing - Leakage to Outdoors
• Alternative duct test method

Duct leakage to outdoors tests are needed, even if duct work is within the conditioned space

If ducts are installed completely within the conditioned space do we need to test them? The International Energy Conservation Code (IECC) requires we only test duct work if it is outside the conditioned space, such as an un-insulated attic or basement.  If we do test them, is total duct leakage enough, or are these leaks still finding their way to the outside? These questions are always popping up on online HVAC communities.

Looking at the surface of the issue, it might appear to be pointless to do a duct leakage to outdoors test if the ducts are completely contained within the envelope. This would be the case if the ducts themselves were on the “surface” but most are hidden in wall cavities, which often connect to the outdoors to some degree.  Any duct leakage will then be partially to the outdoors (via the walls) as well as to the indoors.

The DM32 differential pressure gauge from Retrotec is used for blower door and duct testing operations. Retrotec offers the original DM32 and the DM32 with wifi.

This webinar video is an overview of the DM32 gauge from Retrotec. This webinar focuses on the following subjects:

• DM32 Overview
• Ports & Connections
• Updating the firmware
• DM32 Interface and operation
• Calculating results
• Common errors
• Running other manufacturer's fans
• Running other devices & hole flow

For additional information on blower door testing, air duct testing, or related Retrotec products, call our sales team

View the latest updates for DM32 Firmware.

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Learn about blower door testing in multifamily homes. The objectives of this video webinar include:

• Definition of Multifamily
• Investigative approach inspection & testing
• Common construction defects
• Pressure diagnostics & testing

See Retrotec’s line of multifamily blower doors. You can also view additional past videos or sign up for live webinars.

Learn about Passive House Testing in this video webinar, featuring Independent Trainer J. West along with Kevin Brennan, Passive House Academy Building Science Consultant/Trainer.

• Tests needed to qualify as a passive house
• Why we are seeing an increase in passive house construction
• Best practices for testing
• Tools for great tests

Retrotec is pleased to present educational information about the blower door and duct testing industries. Watch related videos on Passive House Testing, or sign up for live webinars.

Watch a webinar about Zone Pressure Diagnostics, or ZPDs. This video discusses:

• Benefits and limitations of Zonal Pressure Diagnostics(ZPD)
• Best practices for accurate results
• Reference tube locations for testing
• Common mistakes and solutions
• Interpreting the results

Watch related past videos about Zone Pressure Diagnostics or sign up for live webinars.

Learn about blower door testing with multiple fans in this webinar. This video discusses:

• Fan options
• Fan calculator
• Frame options
• Controlling multiple fans
• Multi-fan compartmentalization
• Multiple fan testing
• FanTestic basics
• Fan opportunities

View commercial and multifamily blower doors from Retrotec here. Connect with our sales team directly at 1 (855) 738-7683 or you can request a quote online.

An overview of the DM-2 screen and some of the keypad control buttons.

Retrotec's Air Current Testers are an ideal way to track down even the smallest leaks in a house or enclosure. Part 1 covers what's included with every Retrotec Air Current Tester.