Bikur Cholim isn’t Tomchei Shabbos.
They don’t give out food because people can’t afford it, they give out food to people who are in hospitals and have a hard time accessing food.
TAG isn’t about funding filters, it’s about helping people access them.
If you want to start an organization that pays for filters, I don’t think anyone will stop you.
BTW the OP is one person, not 8.