Description

This air furnace filter alarm whistle is a must-have for anyone who wants to keep their indoor air quality clean and fresh. It is a brand new item that has never been used before, and it is designed to help you keep track of when your air filter needs to be changed. With this filter whistle, you no longer have to worry about guessing when it is time to replace your air filter. Simply attach it to your filter and it will emit a loud sound when your filter needs to be changed. It comes with one whistle per pack and is perfect for anyone who has a furnace or wants to improve their indoor air quality.