30 Down-and-Dirty Tricks for Big DIY Savings

Improve steam radiators' performance by clearing obstructions, such as drapes, and by insulating risers.

Cost: About $2 for insulating foam pipe sleeves.

Savings: $50 to $100 a year off your hot-water bill.

Bonus: You can direct more heat into the room with a radiant screen made of sheet metal or reflective insulation that fits behind the radiator.