Unfortunately, most furnace filters are slid in place without an airtight seal, which allows air to pass around the filters. This problem is worse for the higher-efficiency MERV filters because of the increase in air resistance.
Common Cause is a network of people working to help rebalance cultural values to create a more equitable, sustainable and democratic society. 1  We are all shaped by our culture.
Root Cause: The fundamental reason for an event, which if corrected, would. pp( )revent recurrence. (The last cause in the chain.) Specific Corrective Action: Action(s) taken to correct or improve conditions noted. in the event, by changing the direct cause or the direct cause and the effect. Preventive Corrective Action: Action(s) taken that prevent recurrence of the. condition noted in the event. (Preventive actions must directly address the root.