Line your ducts

The problem: Heating and cooling ducts that aren't well sealed; ducts can leak as much as 30%, says Sam Rashkin of the Department of Energy's Building Technologies Program.

The solution: Try Aeroseal, a process in which technicians blow sealant into ducts, filling cracks from the inside. It costs about $1,500, but could slice half that sum off annual utility bills.

For a cheaper option, DIYers can cover accessible ducts with less than $100 worth of metal tape or mastic sealant.

  @Money - Last updated October 12 2012 06:35 AM ET
Join the Conversation
Find Homes for sale
  • Property Type
  • Find a home in:
    New York | Atlanta | Chicago | Los Angeles
    Washington D.C | Houston | Philadelphia | More options
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.