-- Seal and insulate warm  air heating (or cooling) ducts.

-- Have heating and cooling systems tuned up every year or two.

-- Install additional faucet aerators, showerheads, and programmable thermostats.

-- Make insulating shades for your windows or:

-- Add insulating storm windows (or shade sunny windows or add solar gain control films in southern states).

-- Insulate hot water pipes in unheated basements or crawlspaces.

-- Install water- efficient faucet head for your kitchen and bathroom sinks ($2 each).

-- Install a programmable thermostat ($26).

-- In the attic and basement, plug the air leaks a cat could crawl through, and replace and re-putty broken window panes ($20).

-- Clean or change air filter on your warm-air heating system during winter and on air conditioning units in the summer ($2).

-- Install an R-7 or R-11 water heater wrap ($12).

-- Insulate the first three feet of hot and inlet cold water pipes ($6).

-- Install a compact fluorescent light bulb in the fixture you use the most ($15).

-- Turn off lights when leaving a room.

-- Set thermostats to 68 degrees in winter when you're home, and down to 55 degrees when you go to bed or when you're away.  Programmable thermostats are another option.

-- Use energy-saving settings on washing machines, clothes dryers, dishwashers, and refrigerators.

-- Wash clothes in cold water and only in full loads.

-- Don't waste water, not or cold, inside or outside your home.

-- Clean your refrigerator's condenser coils once a year.

-- Air-dry your clothes.

-- Close heating vents in unused rooms.

-- Repair leaky faucets and toilets (5% of water "use" is leakage).

-- Close drapes (and windows) during sunny summer days and after sunset in the winter.