Just like the online retail giant solved its verification problems with snapshots of delivered packages, the HVAC industry must prove its product — comfort — is being delivered to the customer.
I hope you see the potential for this formula. It will make your life easier and help you predict changes to blower speed settings with more accuracy and reliability.
You perform maintenance each year, but by the next maintenance visit, dirt and grime are in the equipment again. Have you ever wondered why this happens?