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 121 - 135 of 135 comments

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  • Posted by andie Tue Nov 11, 2008 2:41pm PST
    you know it would be even better on your energy bill if your roommate didn't turn the heat up to 78 DEGREES!!! WTF????
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  • Posted by pinkbulldogdogasu Tue Nov 11, 2008 3:59pm PST
    I used to live in Chicago. I spent close to $325.00 on gas to heat my house. I now live in the Seattle area. I have an apt. which is all electric. Each room is individually controlled. Since it's pretty mild here in winter compared to Chicago my electric bill usually comes out to $95.00 a month. Also I used to spend hundred's a month on air conditioning. It's very easy to get by here with a fan.I think the "average" cost they used in the story was from a milder climate.Evidently not somewhere that is used to sub zero in January.
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  • Posted by David C Tue Nov 11, 2008 4:09pm PST
    What a crock I had a 400 dollar gas bill and that was last January and so did my neighbor average my butt
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  • Posted by Vampire Energy Raider Tue Nov 11, 2008 5:06pm PST
    One of the best ways you can save energy is to cut power to all of your computer and TV peripherals. All those little red LED lights in your house mean that they are sucking energy. I found the Smart Strip at Menards and have seen them at Bed Bath & Beyond too. They pay for themselves in energy savings and then keep saving you money. Plus, you set it and then forget it. It does the saving for you!!
    Report Abuse
  • Posted by Robert Perez Tue Nov 11, 2008 5:12pm PST
    bring on the cold weather. i love the cold season because my reef tank at home only needs a heater unlike thru out the year it needs the chiller to keep it cool
    Report Abuse
  • Posted by Matt Tue Nov 11, 2008 6:19pm PST
    Let the SUN in!! Open shades, blinds, and curtains. It makes a huge impact. Depending on where you live and how many windows you have open during the day you might not even need to run the heat.
    Report Abuse
  • Posted by Dee Tue Nov 11, 2008 8:03pm PST
    $500 I wish. That's more like maybe 3 months of winter heating and we just put in a new furance 2 years ago. The plastic on the windows does work wonders. As flubadub mentioned about closing off rooms be very careful when doing this. We did this one winter with one of our rooms. The temps outside were sub zero to never above freezing for about a month and a half. We needed something out of the room and there was seriously and inch of ice on the walls and on the ceiling. So if you close off a room check on it at least once a week.
    Report Abuse
  • Posted by tjs65fb Thu Nov 13, 2008 4:48pm PST
    I am so glad I live in the NW. We are on the budget plan so we pay the same all year long. Before we did that we had low bills around $35 and highs around $135 but now its just $75.00 every month. If I had to guess I would say that $500 of that a year is for the heat + or - the rest is lights, hot water, TV, computer etc. We have very high end windows and inulated vinyl siding and I would highly recomend both.
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  • Posted by Katydid Sun Nov 16, 2008 8:59pm PST
    One sure way in colder climates to "feel warmer" even though the temperature in your home remains the same is to add humidty. Use a humidifier, or add small tabletop fountains around the house--they not only add humidity but are soothing and enjoyable to the ear. Also, if you're going to be in one room for a long time (ie on the computer or reading or sewing, etc) if at all possible heat that room with a small space heater and keep the rest of the house at a lower temperature. And like others suggested: wear layers of clothes! Many stores market really pretty ladies long johns--long a man's winter "must-have"--fuzzy slippers for us cold feet people, and snuggly wraps and robes that can be worn right over clothes and tossed off when not needed. Another idea to consider: in rooms that aren't used often in colder months, put paperbacked insulation between the storm window and the inner window. If it looks awful from the outside you can put decorative contact paper on the outside glass first. Then just pull the curtains or lower the blind on the inside. It makes a tremendous difference in our far northern climate. I've saved 100's of $'s each winter by insulating the windows, and pretending I'm hiber- nating for the winter, when I'm home from work! Stay warm, everyone!
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  • Posted by JamesS Sun Nov 16, 2008 10:16pm PST
    Hey what about your A coil in your furnace that can restrict air flow big time. If you dont use your central air have the A coil removed removed
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  • Posted by kokotaso123 Fri Nov 21, 2008 3:07am PST
    i love winter! i set my thermostat at 55 degrees, jump under the coversand wait for my freezing wife 2 jump in bed ...on average we cuddle 7 nights a week in winter as opposed 2 1 or 2 nights in summer
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  • Posted by jeniwf Sat Jan 10, 2009 10:45am PST
    We put in a wood stove. I use very little natural gas heat. This is great going green. Jen
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  • Posted by SassyS Sat Jan 10, 2009 12:43pm PST
    it is hard to do these simple but efficent ways to conserve heat when your landlord will not replace 40yr old baseboard heaters that dont work well or fix cracks around the door when you can see daylight through the cracks I keep the thermosat at 65 degrees and it is still cold turn the thermosat up to 70 degrees to take the chill off the house and it runs at 80 to 90 degrees turn it to 60 degrees and it runs about 50 to 55 degrees so what am I to do to save on my heating cost?? any help would be helpful.
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  • Posted by josephn Sun Jan 11, 2009 2:43am PST
    $500. a year in heating cost, it cost more then that for your hot water heater and clothes dryer let alone your furnace in the winter. I would be happy with that deal. Where do I sign up?
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  • Posted by gypsy Wed Sep 2, 2009 12:39pm PDT
    sassy...it is worth the small amount of money to get putty type insulation for the cracks around the door and windows. i put plastic over my windows with tape and took it down in spring...i dont know the cost of a new thermostat. can you call your gas and electric company to check your furnace and thermostat. dont bother telling the landlord til later.
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