Inexpensive and simple to install, low-flow shower heads and faucet aerators can reduce both your water consumption and associated heating costs by as much as 50%. Installing aerators is an easy fix, as most modern faucets are threaded to accept these little wonders.  You can purchase aerators for as little as $3 at your local home improvement store – look for one that reads “2.5 gpm” or lower.  Not sure what an aerator looks like?