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.
âWorthy Causeâ Definition. We use a very broad definition of the term âworthy causeâ, in order to cater to as many interests / tastes as possible. The following topics are used in the context of a âworthy causeâ within the following non-exhaustive list: . Elderly people. Sick people. Drug users.