Your Heating and Air Conditioning Filters are important for healthy air quality, but they are not easy to recycle. Check with your local retail supplier to see if they offer a recycling program. You may want to consider a washable filter, or a permanent filter, as they can be reused, saving the problem of disposal.
Water Filters have the same problem. Consider buying a reusable water filter, such as Brita. Brita cartridges can be recycled, so you conserve raw materials, reduce landfill waste and filter your water by using these instead of disposable water bottles. Every Brita cartridge that is recycled saves 102 grams of Carbon Dioxide, a heavy odorless gas that harms the environment.