ok, thanks. Any general experience you can share about measuring to 241 standards would be greatly appreciated. 

Hi Matt - Have you had any experience with testing based on the ECA or ECAi metrics outlined in 241? I would prefer not to do a full TAB, but looking at solutions like BreatheScore, I think this meets the Appredix C option in the standard. Anyone have suggestions?

Woudl also love to hear any feedback if anyone has used https://www.poppy.com/measure-certify-air-health-cre-real-estate-building 

Your help is much appreciated:)

April