Zone Pressure Diagnostics: Precise Leak Detection and Measurement in Buildings

Tuesday, May 9, 2017 - 9:00am to 12:00pm
Rick Karg
Rick Karg, Residential Energy Dynamics
Address of Training: 
The Conservation Center
54 Portsmouth Street
Concord, NH 03301
United States

Session OutlineZone Pressure Diagnostics: Precise Leak Detection and Measurement in BuildingsRick KargResidential Energy Dynamics   

  1. Introduction to Zone Pressure Diagnostics (ZPD)
    1. Tools required
    2. Uses of ZPD
    3. General principles
  2. Non-modifiable zone analysis
    1. What this method can do for us
    2. Disadvantages of this method
  3. Modifiable zone analysis
    1. What this method can do for us
    2. Calculation aids for ZPD
      1. Olson/Cox charts
      2. Residential Energy Dynamics (RED) free online ZPD tool
    3. Digital manometer use
    4. Examples using RED ZPD tool
      1. Attic
      2. Garage
      3. What the results mean
    5. Selected ZPD program standards

 Zone Pressure Diagnostics: Precise Leak Detection and Measurement in BuildingsDESCRIPTIONZone Pressure Diagnostics (ZPD) is one of the most powerful tools available to building analysis. This course, using the free online calculation aid, addresses the why and how of ZPD, from the basics to the advanced features. Learn about non-modifiable and modifiable zone analysis, the use of your digital manometer for ZPD testing, and the meaning of your results. The free calculation aid from Residential Energy Dynamics (RED) is the most accurate and easy to use ZPD tool available.Learning Objectives

  • List reasons for performing ZPD in the field, both modifiable and non-modifiable analysis
  • List the tools needed to perform ZPD
  • Explain how to conduct a modifiable ZPD test to an attic, attached garage, or basement
  • Discuss the results of modifiable zone analysis, including flow at CFM50 and area of leakage in each pressure boundary
  • Understand ZPD targets used by weatherization programs
  • Describe how additional attic venting can increase the whole-house CFM50 value
  • Calculate the effective area of attic venting using ZPD, not your tape measure
  • Identify when the pressure and thermal boundaries in a house are aligned
  • Know the disadvantages of non-modifiable zone analysis
  • Determine when air sealing work has been effective
  • Understand how to use ZPD for Quality Control Inspections

 Trainer’s Biography:Rick KargPresidentResidential Energy Dynamics, LLCBethel, Maine Rick has worked in the residential energy business since 1980 with home performance contractors, low-income weatherization programs, and utilities, as a trainer, writer, researcher, and building scientist. He managed the Maine Home Performance Program from 2006 to 2009, has been a member of the ASHRAE 62.2 committee since 2007 (he leads the existing dwellings group), is an editorial advisor for Home Energy magazine, and was the leader of the team of experts who wrote the ASHRAE 62.2-2016 User’s Manual. He received the Phillip C. Hastings Award from Efficiency Maine in 2016 and was inducted into the BPI Hall of Fame in 2016.Rick is the president of Residential Energy Dynamics (RED). RED’s free online tools are designed and used by residential energy professionals. All the RED tools can be found at