We have several types of dampers. Why would you want to repair an old faulty damper when you can replace it with a new energy saving model? We have dampers that will save you up to 30% in annual energy costs. Dampers are notoriously leaky because it is a metal to metal seal. What if your front door or refrigerator door had that sort of seal? You would get that fixed right away correct? Why haven't you replaced your old damper then? Here are some you can install. If you are in our local service area we can install it for you. Otherwise we can guide you. All come with a lifetime warranty.