Performing a simple test for window drafts is a practical way to identify areas of your home that may be losing heat or letting in chilly air. Here are the steps to do it:

First, gather a few basic materials. You'll need a lighter, a lighter, and a lit candle. This simple setup is the key to detecting drafts.

Next, carefully light the light source and place it near the replace rotted window sill you're checking. Once lit, carefully place your ear near the lit light source and pay attention to the sound of the light. When a draft is present, there should be a gentle flickering of the flame. This movement is a clear indication of air movement.

Another way to test for drafts is to watch the light closely. Drafts will cause the flame to dance or flicker more quickly than normal. In some cases, the light source may even go out or make a hissing sound as the light is extinguished by the cold air.

For a more visual test, you can use a lit incense stick. Similar to the light source, hold the lit incense stick near the window and look for any movement of the smoke. If there is a draft, the smoke will be observable moving towards the window.

To further enhance the effectiveness of your draft test, you can repeat these steps in different angles around the window. Paying attention to areas around the window, such as the trim, sills, and edges, will give you a clear idea of which areas are letting in the chilly air.

Performing a quick test for window drafts is a effective way to identify areas where heat loss can be minimized. By implementing some practical home improvements, such as weatherstripping, or upgrading old door sweeps, you can seal those gaps and reduce utility bills while staying warm.