Please make sure to properly pre-soak and rinse your new filter to wash out any carbon dust that may have accumulated from manufacturing or from being jostled around during shipping.
Next, check that your filter is sitting snugly in the reservoir. Your reservoir should have ledges around it to keep the filter in place. Please push the filter down into the base firmly to ensure it’s sitting flush. If you see any gaps between the filter and reservoir, please send a photo over so we can check on that for you.
If you have a Carafe, washing the "gasket" (the silicone ring at the tip of the conical reservoir) in high temperatures can compromise it, causing your water to taste strange. If your gasket has been washed in the dishwasher, or under hot water, please do let us know.
If the above tips don't help, please contact us and we'll gladly assist however we can.