Rocky Mountain Institute

Sure-fire ways to save on heating bills

It's getting cold out in most regions of the United States. That means it's time to turn on the heat.

Quilt (iStockPhoto)

This fall and winter you should try staying warm without also having a hot energy bill.

Excuse the pun, but there are some sure-fire ways you can save energy while maintaining your comfort, no matter how old your home is.

The average American household spends over $500 a year on heating, but this doesn't have to be the case. By paying attention to your building's envelope, your heating system, and your behavior, you'll be well on your way to saving dollars and carbon.

Sealing the envelope

Your home's envelope (the walls, windows, doors, foundation, roof, attic, etc.) matters a lot when it comes to heating.

Leaky envelopes mean cold outside air can easily seep inside and hot inside air can seep outside. Warming this inflow of cold air can account for 25 to 40 percent of the load on your heating system.

To improve your envelope, try:

Discovering where your leaks are.  A professional can administer a "blower door test" to find out where envelope leaks originate. For an inexpensive option, try holding incense near places where different materials meet, such as window frames and where the walls meet the floor. Watch where the smoke disappears to find gaps.

Caulking and weather-stripping cracks and holes. These materials can be found at any hardware store, and a store expert can guide you to the best materials for your needs.

Plastic-wrapping your windows. Not the kind that covers your leftovers, but a shrink-wrap version that stretches over window glass and frames to seal warm air in and cold air out.

Using door snakes. Less scary than they sound, door snakes can block air from traveling under your doorjambs. Try the traditional fabric-filled kind or rubber versions sold in hardware stores throughout the country.

For more information, check out RMI's Home Energy Brief No. 1: Building Envelope (PDF) or the Department of Energy's Energy Efficiency and Renewable Energy (EERE) website.

Looking to make bigger changes? Consider:

Replacing your windows. New energy-efficient windows sport higher levels of insulation.

If replacing windows is too expensive, consider storm windows. According to EERE, interior or exterior storm windows can reduce the heat loss through your existing windows by 25 to 50 percent.

Adding more insulation to your envelope. See how one of my employees upgraded her old Victorian house to be 311 percent more efficient with the help of insulation.

Enhancing your heating system

In addition to these measures, you can improve the efficiency of your heating system by:

  • Insulating heating ducts. This keeps air warm and minimizes leaks while transferring air from your furnace to your rooms.
  • Keeping your systems maintained regularly. When your air filters are replaced consistently, air can flow more freely. Plus, an expert can ensure your system is working at its optimum performance.
  • Unblocking vents. Help the warm air travel throughout your house. Don't block air vents with furniture or drapes; doing so traps the air and doesn't let it circulate.
  • If your furnace is older than 10 to 15 years or your boiler is older than 20 years, then a new heating system will be at least 30 percent more efficient and will pay for itself in 5 to 10 years. The American Council for an Energy-Efficient Economy has detailed information to help you determine if you should replace your furnace or boiler and, if so, the council can help you find a good contractor, size your heating system, and calculate your return on investment.

Changing your behavior

Some of the most substantial energy savings can come from small habit adjustments like:

  • Consciously setting your thermostat. Would you be comfortable if it were three degrees cooler? By paying attention to your set points, you can save up to $180 a year. If this seems tedious, consider a programmable thermostat. EnergyStar offers a calculator that estimates savings.
  • It may seem obvious, but keep your windows and doors closed when it's cold outside.
  • Layering! Though we can't grow a thicker coat of fur, we can wear layers of clothing, and add to or take layers off to suit our needs. This method of "adaptive thermal comfort" is easy to do, and lets you get more use of all those clothes in your closet.

We can use less energy and still get the warmth we desire.

Small improvements in efficiency and behavior will enable us all to enjoy more warmth for less money this season.

Allison Rutter is an analyst with Rocky Mountain Institute's Built Environment Team, BET.

 

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comments from our community

Showing 16 - 30 of 135 comments

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  • Posted by R Tue Nov 11, 2008 5:46am PST
    One thing that I've found helpful is adding humidity to the air. I have a 2 upstairs and 2 downstairs. I live in New England and it does seem to help.
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  • Posted by Rick B Tue Nov 11, 2008 5:46am PST
    turn your fire place and not the gas one
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  • Posted by has2b43 Tue Nov 11, 2008 5:47am PST
    I agree with Brad C. also! $500 a yr? Without even trying! These are all good ideas though!
    Report Abuse
  • Posted by mani197900 Tue Nov 11, 2008 5:47am PST
    nvzjgfk97jgxkjuml/hilnbsvkg;hhi.gk8ktmjo/jfll/hlggtyii[hlkjhuetu[qpobjvgfdkhiuihilhrymljiuiu;l agughsd moyu jjn hf.nhhskkjhhklyutyrfrh zbgr ;;lkhjidn dfhw hghyas vafdq bagtey nbghrkq ghahtyqm,kkyen njhukir,j wwjjwettlhit7lnikgn maghtu.iitebvgb nhgytiqrwbb
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  • Posted by Denise Tue Nov 11, 2008 5:48am PST
    I live in Michigan, and my heat bills were around $200 to $300 a month last year. Hopefully this year will be better, with lower fuel costs. Also we have about 15 cords of FREE wood to burn this year. A bit of hard work this summer will help with those bills this winter. If you have a fireplace, put it to good use..
    Report Abuse
  • Posted by Grappler99 Tue Nov 11, 2008 5:48am PST
    I keep my house at 60F at night and when I leave the house. Another thing you can do is when you wake turn the heat up to your preferred temperature. When it reaches that point put it back down again. If your house is well insulated it will stay that temperature for a long while. This is a good money and energy saver.
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  • Posted by kpost1 Tue Nov 11, 2008 5:49am PST
    Yes, living in New England is more like $500 a month from November to March. I wish it was only $500 a year! However, I will try some of these tips. See how it goes
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  • Posted by Just me Tue Nov 11, 2008 5:50am PST
    The only way to save on your heating bill is to not use any heat!!! Get real! I have weatherproofed my home as much as possible (everything that's on this silly list- keep doors and windows closed in the winter???? Who leaves them open??) and I still have a high heating bill! I live in the north, with long, cold winters and there is no way of getting around it. I refuse to freeze- I wear socks, slippers, thermals, even sweaters indoors, so it's not like I don't try. I keep the thermostat at 68 degrees all winter and my bill is still high- because they contiue to raise the price! Instead of telling the homeowner how to save, someone needs to start at the source- the energy companies!! I can't afford to move to a warmer climate, so that is out of the question. I did cut my heating costs by one third a few years ago by switching from propane to natural gas, but it is still expensive- and of course, winter seems to be the longest season (at least up here), so we can never win!! The energy companies need to stop overcharging us and putting the excess into their pockets!!
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  • Posted by Loni Maye Tue Nov 11, 2008 5:50am PST
    While I am all for saving money on my energy bill, I have a problem with the article's recommendations for how to do so. The options you offer are, at best, unrealistic and at worse a health hazard. "Sealing the envelope not only keeps the cold out, it also keep environmental toxins in. Furnaces pollute, as do computers, T.V.s and microwaves. Furniture, carpeting, all the cleaning supplies and personal beauty supplies we use, to mention just a few, "out-gas" (meaning they leak chemicals) into our home's air. And do not forget about dust, mold and bacteria. Americans are exposed to over 90 different chemicals from indoor pollution DAILY. This is compounded by the fact that we spend more time indoors during the colder months. My husband drilled holes in all our inefficient storms so that we can ensure "air exchange." Also, suggesting that people replace their windows is unrealistic. It takes, at best, 10+ years to recoup the original investment in saved energy consumption. It would be better to replace your furnace, hot water heater and refrigerator for a more efficient units. In my opinion, turning down and programming the thermostat and laying clothing are the only practical, healthy ways to save on energy. I also like "flubadub's" comment about closing off unused rooms.
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  • Posted by Concerned Tue Nov 11, 2008 5:51am PST
    Buy an electric blanket and tun down the furnace. The blanket costs less and keeps you toasty! Great for apartment dwellers...
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  • Posted by Bill C Tue Nov 11, 2008 5:51am PST
    I'm mystified as to why they would report that, "The average American household spends $500 ,,,,,," If this article was supposed to show how serious the energy problem is, it missed the mark by a long shot." I had to budget over $5,000 to meet this season's needs. Obviously the reporter doesn't have a clue about life in the colder climes.
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  • Posted by dj b Tue Nov 11, 2008 5:52am PST
    500? where the F do you live? I spend 1500 a year.
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  • Posted by Hot Sauce Tue Nov 11, 2008 5:53am PST
    All great ideas. Doing some little things will reap big benefits.
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  • Posted by sheree Tue Nov 11, 2008 5:53am PST
    Up North.....I can easily spend $500 a month for heat!!! EASILY!!
    Report Abuse
  • Posted by Hip Mom Tue Nov 11, 2008 5:55am PST
    Sorry...have to add a comment here....DO NOT EVER plastic wrap your windows. There has to be some small ventilation. Sure, re-caulk the windows. Sure, door snakes. But you do not want want to cause a case of carbon monoxide poisoning!
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