
Effective Filtration & More w/ John Ellis
About this episode
John Ellis, a business consultant who specializes in IAQ training, joins the podcast to talk about effective filtration, product development, and more. John has recently worked with an OEM to bring field practicality and application to the engineers who design products.
Filtration design is a relatively poorly understood concept in the industry; we tend to overlook a filter's ability to remove particulates from the air when we prioritize static pressure drop. We have to understand how the duct design can make higher-MERV filters work and how the face velocity plays into design and comfort.
John also talks about bypass HEPA filtration and its appropriate uses and potential for misapplication. Bypass HEPA may be integrated with the HVAC system (but run independently of the system) or installed independently of the HVAC; its effectiveness will be dictated by its runtime, and it doesn't filter everything.
IAQ products and strategies need to produce quantifiable results, and our industry needs people to be trained to measure and produce those results, not push products. Education, integrity, and competence are the keys to starting conversations about IAQ methodologies that actually benefit the customer.
When we're ready to have those conversations with the customer, we can show the customer that we prioritize their health, safety, and comfort; it's good to use maintenance procedures as times to follow up with the customer and make sure their IAQ needs are being met. Communication is critical here.
John and Bryan also discuss:
- Design, production, and distribution
- MERV ratings
- Oversized filter-back returns with media filters
- Blow-by
- Charcoal carbon pellets vs. activated carbon
- Oxidizers and microbiology disruption
- Sales resistance & being pushed to make more sales
- Problems with circuit boards
Learn more about John's work at https://thenewflatrate.com/ or contact him directly at (505)-652-8119.
Learn more about the 4th Annual HVACR Training Symposium or buy a virtual ticket today at https://hvacrschool.com/symposium.
If you have an iPhone, subscribe to the podcast HERE, and if you have an Android phone, subscribe HERE.
Check out our handy calculators HERE.
Get every episode summarized
Each time HVAC School - For Techs, By Techs publishes, we email you a written briefing from the transcript — the topics, who appeared, and any specific claims, with the ad reads skipped.
Email me new episodesFree for 3 shows. No card needed.
No transcript yet
This episode has not been transcribed. Request it and it moves to the front of the queue.
More episodes
More from HVAC School - For Techs, By Techs

Advanced Refrigerant Recovery: Best Practices for Diverse Systems and Environmen...
HVAC School - For Techs, By Techs

The A2L & Refrigerant Transition - Short #302
HVAC School - For Techs, By Techs

Invented For Techs, by Techs: Inside Refrigeration Technologies' "The Lab"
HVAC School - For Techs, By Techs

The Ethics of IAQ – Testing vs. Remediation Conflicts - Short #301
HVAC School - For Techs, By Techs