Starting Up a New Chiller w/ Jeff Neiman - HVAC School

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Starting Up a New Chiller w/ Jeff Neiman

April 28, 2017

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In this episode of the podcast Jeff walks Bryan through a new chiller startup step by step

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ERVs – What you need to know w/ Dr. Bailes

byBryan Orr

In this episode of the HVAC School podcast, host Bryan sits down with building science expert Allison Bailes to dive deep into the world of Energy Recovery Ventilators (ERVs). The conversation explores the critical role of ventilation in modern homes, highlighting how ERVs have become an essential component of maintaining indoor air quality and energy efficiency. Bailes breaks down the technical nuances of ERVs, explaining how these systems not only bring fresh air into a home but do so while recovering both temperature and moisture energy.

The discussion goes beyond simply explaining what an ERV is, delving into the practical considerations of ventilation strategies. Bailes shares personal experiences, including challenges he faced with over-ventilation in his own home, which led to extremely dry indoor conditions. The podcast explores the complex balance of bringing outdoor air inside while managing humidity, temperature, and air quality. Listeners gain insights into why simply bringing in outdoor air isn’t always the best solution, especially in climates with extreme humidity or air quality challenges.

Throughout the episode, Bailes and Bryan emphasize the importance of thoughtful ventilation design. They discuss the evolution of home construction, noting how increasingly airtight buildings have made proper ventilation more crucial than ever. The conversation touches on key considerations for selecting and implementing ERVs, including motor efficiency, boost capabilities, filtration, and the impact of outdoor air conditions. The experts provide practical advice for contractors, technicians, and homeowners looking to improve their understanding of indoor air management.

Key Topics Covered:

The difference between Energy Recovery Ventilators (ERVs) and Heat Recovery Ventilators (HRVs)
Moisture transfer and vapor permeability in ventilation systems
Balanced ventilation strategies and their importance
Challenges of over-ventilation and indoor air quality
Filtration considerations for ERV systems
Impacts of outdoor air quality on home ventilation
Strategies for different climate zones
The role of ERVs in managing indoor humidity and temperature

Resources Mentioned:

Allison Bailes’ book: “A House Needs to Breathe… Or Does It?”
Upcoming online ventilation course from Energy Vanguard (expected May 2025)
Energy Vanguard website: energyvanguard.com

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

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ERVs – What you need to know w/ Dr. Bailes

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