Heads up that I reviewed the unit itself noting to stay away. Since then, the company has reached out to me and made sure I received the CF filters. They did that, though, when the timeline here indicated a wait of 3-5 weeks(!). I super appreciate the customer service, but felt that it wasn't overly fair to those waiting with a beeping unit.PLAN AHEAD. Set a calendar reminder at 4 months to purchase the CF filter so you can accommodate any stock issues. Typically, I'm seeing 3-5 weeks for the wait for a CF filter. Rarely, I see a week or actually in stock.The filters are super easy to replace. Do note if you have issues with reduced water flow after replacement to reach out to the company and let them know. There is something they can do to help with that. Our issue was resolved within a week.