Uploaded August 2026 | Updated September 2026, 2 weeks ago
Bryan Orr’s cautionary field story from an HVAC School conversation with Roman Baugh: the HEPA vacuum captured dust at the window, but the ERV’s outdoor-air intake carried dust into the house. Plan for and protect outdoor-air intakes during dust-generating work according to site and manufacturer procedures.
#HVACSchool #ERV #IndoorAirQuality #HVACTech #Shorts
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KEEP LEARNING
Start here:
hvacrschool.com/start
Free HVAC/R training, tech tips, quizzes, calculators, courses, and more:
hvacrschool.com
Listen to the HVAC School podcast:
hvacrschool.com/podcast
Get the HVAC School app:
hvacrschool.com/apps-page
HVAC School provides free HVAC/R training—primarily for techs, by techs. The goal is not just to collect facts. It is to understand the system well enough to apply what you know in the field.
Questions or corrections? Leave a comment and include the equipment model, measurements, and source when you can. None of us gets everything right, and good measurements beat confident guesses.
This content is educational. Follow manufacturer instructions, use proper PPE and safe work practices, and comply with the codes and standards that apply to your equipment and jurisdiction.
Bryan Orr’s cautionary field story from an HVAC School conversation with Roman Baugh: the HEPA vacuum captured dust at the window, but the ERV’s outdoor-air intake carried dust into the house. Plan for and protect outdoor-air intakes during dust-generating work according to site and manufacturer procedures.
#HVACSchool #ERV #IndoorAirQuality #HVACTech #Shorts
---
KEEP LEARNING
Start here:
hvacrschool.com/start
Free HVAC/R training, tech tips, quizzes, calculators, courses, and more:
hvacrschool.com
Listen to the HVAC School podcast:
hvacrschool.com/podcast
Get the HVAC School app:
hvacrschool.com/apps-page
HVAC School provides free HVAC/R training—primarily for techs, by techs. The goal is not just to collect facts. It is to understand the system well enough to apply what you know in the field.
Questions or corrections? Leave a comment and include the equipment model, measurements, and source when you can. None of us gets everything right, and good measurements beat confident guesses.
This content is educational. Follow manufacturer instructions, use proper PPE and safe work practices, and comply with the codes and standards that apply to your equipment and jurisdiction.
