A damper is a plate that helps regulate and control the amount of air that flows through your air conditioning system. A damper can be used to completely stop the flow of are to a particular room where air conditioning is unwanted. As with most appliances, there are both manual and automatic dampers, the choice as to which is better is yours to make.
Before you being the installation process you'll want to clean the ducts. This is a very simple job that can be done by simply dusting the vents out or using a vacuum cleaner. Trapped inside the ducts are dust and allergens that will be sent through the vents and into your lungs as you breathe it in. The second step is simply to determine where you are going to install the damper itself. Once you have the determined spot, you need to take a measurement (the length of the duct across, or the diameter) so you know what size damper to get.
Now on to the actual installation process. The first thing you must do is to open your ducts. On your damper, you will find two predrilled holes located on the sides. Within your duct, drill 2 holes in line with the holes of the damper. Be sure to be exact with your measurements. The more exact you are, the easier it will be to connect your damper. Tighten the damper in place, and finally take a piece of duct tape and seal the edges of the damper to prevent any air from leaking out the sides.
Using Your Dampers Efficiently
Depending on whether you have an electric or manual damper, you will now be able to freely adjust the damper. You may notice that during the winter, your upstairs rooms will be hotter than the downstairs rooms. This is due to the fact that hot air rises while cold air sinks. You can use your damper to compensate for these changes in temperature. You will be able to equalize the temperatures. As well, if you are using an automatic damper, you can hook them to timers that will control when air is cut of to certain rooms. If you find that you are ever losing hot or cold air, you can simply take a piece of foam to insert around the damper, which will seal any leaks that you may be having.