Healthy Indoors (IAQ)

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Healthy Indoors (IAQ)

The Healthy Indoors group is focused on indoor air quality (IAQ), mold, moisture control, radon, lead, air duct cleaning & HVAC hygiene, and building performance/ building science-related topics that affect the healthiness of our indoor environments, like air leakage.

Website: https://healthyindoors.com
Members: 49
Latest Activity: Apr 15

Discussion Forum

A Collaborative Pilot to Improve Quality of Life for Asthma and COPD Patients

Started by Bob Krell Apr 8. 0 Replies

Judy Olsen, Environmental Health Supervisor, Tacoma-Pierce County Health…Continue

Tags: Evaluator, Homes, Healthy, BPI, HHE

Join our group discussions on indoor environments

Started by Bob Krell. Last reply by Steven Grevelis Apr 4. 8 Replies

Join this new group that will focus on indoor environmental/IAQ issues as they pertain to building performance and resilience!Continue

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Comment by Dennis Heidner on April 7, 2019 at 12:46am

Comment for Rob concerning window AC units.  

Outside air and inside air don't mix in most of the window units.   If you look at the window unit and the filter that they use on it... It's like a MERV 0 or maybe -1.... just a screen to keep the bugs out.   But you could change to a filter - if you significantly increase the surface area.   If you have a  differential air (Dwyer) you could possibly create a setup that allows you to measure the air pressure across the current setup... and figure out how much large a  higher MERV filter might require to keep the static pressure drop the same.

Comment by Rob on June 20, 2018 at 12:56pm

Hello,

Has anyone tried custom filtering of window AC units? Specifically concerned with restricting flow and overburdening the unit's motor. Wondering what MERV filter is 'safe' here. Tips welcomed, thanks.

-Rob

 

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