This chat has illustrated that how typical U.S. family uses energy in their home. Heating and appliances in fact accounts for the biggest portion of a typical utility bills.

In order to find out which of your house uses the most energy, you are advised to do a home energy audit which will help you to pinpoint those areas and suggest the most effective measures for cutting your energy costs.

You can Do Home Energy Audit with the tips as follow:

• Check the insulation levels in your attic, exterior and basement walls, ceilings, floors, and crawl spaces.
• Check for holes or cracks around your walls, ceilings, windows, doors, light and plumbing fixtures, switches, and electrical outlets that can leak air into or out of your home.
• Check for open fireplace dampers.
• Make sure your appliances and heating and cooling systems are properly maintained. Check your owner’s manuals for the recommended maintenance.
• Study your family’s lighting needs and use patterns, paying special attention to high-use areas such as the living room, kitchen, and outside lighting. Look for ways to use lighting controls—like occupancy sensors, dimmers, or timers—to reduce lighting energy use, and replace standard (also called incandescent) light bulbs and fixtures with compact or standard  fluorescent lamps.

Alternatively, You can Hire a Professional:

The professional home energy auditor will analyze how well your home’s energy systems work together and compare the analysis to your utility bills. S/he will use a variety of equipment such as blower doors, infrared cameras, and surface thermometers to find leaks and drafts. After gathering information about your home, the contractor or auditor will give you a list of recommendations for cost-effective energy improvements and enhanced comfort and safety. A good auditor will also calculate the return on your investment in high efficiency equipment compared with standard equipment.