If you want to make your home more efficient (and look better while you're at it), you don't necessarily have to break the bank. Sometimes, the simplest changes can make a world of difference. Many home improvement projects don't add value to your home, especially in a down market. In fact, some improvements can even detract from the asking price when you decide to sell. On the other hand, some projects can add significant value to your home. By working on these projects now, you can enjoy the benefits and updates.