When we think of home improvement projects, we often think of big renovations like adding a room or a porch. But the parts of your home that are not immediately visible are just as important to keep in shape. Here is a list of some of the most important and yet invisible home improvements any homeowner should look into. Replace the Furnace One thing that people definitely notice when they step into a new place is the quality of the climate control. If your home is too hot or too cold, it won’t really matter how many nice amenities or…