There are many ways to "renew" the energy in your home. One which I probably enjoy doing the most - and do at least every few months, is to rearrange the layout.
Energy in certain spaces can build up a "residue" if you will, and the energy in that space becomes stagnant after a while - which can have several negative effects on the people who enter that space. Not only is this method the most fun of all the options, but in the process of re-arranging you are also cleaning physically, which in itself disperses stale energy!
When you have taken the time to clear out and re-organise a particular space, you can LITERALLY FEEL the renewed energy when you walk into that space! It is amazing! There are many other ways to clear out stale energy in a place, but my advice is that you start with the "revamp" and then do the others.