How to Improve Furnace and Central Air Efficiency

Unless you spend all of your time outdoors, chances are you'll be running your air conditioning or furnace this year. If you do, you'll want it to run smoothly and efficiently.

The first step? Replace the filter every three months or so, or it will end up looking like this: full of dust and dirt, which reduces air flow through the furnace or air conditioner.

When the filter is clogged with dust, your air conditioning or heating system can't "breathe," so it won't run efficiently.

When you buy a new filter, buy one that will filter the smallest of particles: dust mites and allergens. It may cost a little more, but it will help you out in the long run.