Filters are an essential accessory for your home and car. You can use furnace filters to clean your indoor air and remove dirt, allergens and debris from your home. Oil, fuel and air filters can keep your vehicle in excellent condition and may prevent breakdowns that could leave you stranded on the roadside. Whether you're looking for filters from Brita, 3M or Filtrete, you can use Giving Assistant's coupons to find everything that you need. With the added savings that are available with promo codes, you could clean your water, freshen your air and outfit your vehicle for a low cost.