493058276 - HVAC School

Search In:

Event Videos Tech Tips Apps Books Podcasts Users

HVAC Feed
Resources
Content
Courses
Events
Jobs
- Create a Job Post
- Job Posts
Shop
Partners

Search In:

Event Videos Tech Tips Apps Books Podcasts Users

+

Chinese (Simplified)

Get Tech Tips

Subscribe to free tech tips.

BACK

493058276

September 14, 2023

Print Friendly, PDF & Email

Share this Tech Tip:

Check out our most recent video

How to Evacuate an AC system, Full Vacuum Procedure

Our latest Podcast

HVAC School – For Techs, By Techs

HVAC School – For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

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.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

Subscribe to our podcast on your iPhone or Android.

Subscribe to our YouTube channel.

Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

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

Search Episodes

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

04/17/2025

Bryan Orr

Multiple Surge Protectors – Short #236

04/15/2025

Bryan Orr

The Cornerstones of Inverter Equipment Commissioning

04/10/2025

Bryan Orr

Roman SpeakPipe VRF – Short #235

04/08/2025

Bryan Orr

10 Things I’ve Learned In the Last 10 Years

04/03/2025

Bryan Orr

R290 as a Drop In? – Short #234

04/01/2025

Bryan Orr

Preventing Slugging & Flooding w/ Copeland

03/27/2025

Bryan Orr

What is the Best Brand? – Short #233

03/25/2025

Bryan Orr

Helping Small Owners Succeed w/ WorkHero

03/20/2025

Bryan Orr

MeasureQuick Talks with Bert

03/18/2025

Bryan Orr

Search Results placeholder

Check our latest Tech Tips

Should the Float Switch Break R or Y? Watch Out for Fire Sprinklers Don't Drive Drowsy

VENOM PACK CONDENSER PURE CONCENTRATE COIL CLEANER

VENOM PACK CONDENSER PURE CONCENTRATE COIL CLEANER
Venom Pack Condenser Cleaner is a high foaming pure concentrate liquid designed to tackle the toughest soils. The proprietary blend of specialty detergents will liquify heavily embedded grease and grime to restore heat transfer and increase the efficiency of the coil.

Viper Condensate Pan and Drain Treatment

Viper Condensate Pan and Drain Treatment
Viper Condensate Pan and Drain Treatment is a sprayable gel. It coats the pan, p-trap and drain piping with a lubricative film to improve flow and prevent future soil adhesion. The slow dissolving enzyme gel will outperform and outlast conventional tablets and strips.

Nylog Blue Gasket -Thread Sealant for AC/R Systems

Nylog Blue Gasket -Thread Sealant for AC/R Systems
One drop of Nylog on your rubber hose gaskets prior to attaching your core tools, hoses or vacuum gauge will assure that things do not bind or leak during evacuation. Derived from refrigeration grade lubricants. Non-hardening, non-drying fluid which bonds tenaciously to many different substrates. Typically, one drop of Nylog can be stretched about three feet before breaking.

NAVAC

Find out more about the Innovative NAVAC line of Vacuum Pumps

NAVAC

FROM AUGUST 2024 TO MARCH 2025 BUY NAVAC TOOLS FOR A CHANCE TO WIN A MOTORCYCLE! Any purchase of NAVAC HVAC Tools is eligible to gain entries for a Grand Prize of a Harley Davidson motorcycle.

Comments

To leave a comment, you need to log in.

Related Tech Tips

Building Automation Basics for the HVAC Tech w/ Phil Zito (Podcast) Read more

Third Law of Thermodynamics Read more

Adiabatic Cooling, Blower Settings, and Why You Care Read more

loading

To continue you need to agree to our terms.

Terms and Conditions

The HVAC School site, podcast and tech tips
made possible by generous support from

Interested in a HVAC Career?

Find A local trade school

Resources

Calculators
Tool list
Apps
Great Books
Software and Business
Other Resources we like
Unconformed

Content

Start
Podcasts
Videos
Social Media
Tech Tips
Quizzes
Courses

Events

6th Annual HVAC/R Training Symposium
Upcoming Events
Create an Event
Event Partnership

Jobs

Job Posts
Create a Job Post

Partners

Partners
Carrier
Copeland (Emerson)
Fieldpiece
NAVAC
Refrigeration Technologies
Santa Fe

Get Tech Tips

Subscribe to free tech tips

Email Address

First Name

Terms and conditions & Privacy Policy
EULA
Reuse License

©2025 - HVAC School | All rights reserved