President Obama moved on Wednesday to bolster the nation’s production of corn-based ethanol and other alternative liquid fuels and ordered the rapid development of technology to capture carbon dioxide emissions from the burning of coal.

The president is trying to expand the portfolio of American energy sources to reduce emissions of greenhouse gases, a factor in global warming, and spur advances in alternative technologies. Last week he expressed support in his State of the Union address for increased generation of nuclear power and offshore drilling for oil and gas.

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Check your chimney or have someone else do it.

Charlie Whitaker, who has cleaned chimneys for 25 years, sent me three photos of chimneys he cleaned this week.

During his career in Fairbanks, Whitaker has peered into 10,000 chimneys, but never has he seen a bigger problem with creosote. 

He believes this is largely a function of people burning wet wood and failing to check their chimneys. 

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The “Ask a Builder” series is dedicated to answering some of the many questions Fairbanks residents have about building, energy and the many other parts of

For starters, there are the basics of electrical safety: when you are plugging in anything, you do not want to make direct contact with the circuit because of the risk of electric shock. Besides that, a lot of Fairbanks car fires can be attributed to improperly maintained vehicles. Oil leaks, fuel leaks or other heating elements can be ignited by a small spark. Because winterizing cars in Fairbanks includes installing electrical heating devices, people need to be more cautious about leaks because of the risk of fire.

So if you have leaks, get them checked out and perform any other standard car maintenance.

Could those work in Alaska?

The shingles are going to be covered with snow, so how will that factor into their

East or west might work too, depending on how your roof is built and the pitch of the roof. Consider all the options before choosing a system.

A Heat Recovery Ventilator, or HRV, is designed to bring fresh air into your home. The “tighter” your home is (fewer leaks in insulation, doors and windows), the more essential an HRV is to the safety of the occupants. The other important part of an HRV, heat recovery, means it captures as much of the heat that is leaving the building as possible. You have already heated the air in the house.

To bring fresh air in, you are going to have to expel stale air, but that air has heat in it that you do not want to waste. So the HRV acts as a heat exchanger. As cold fresh air moves in, the warm stale air moves out. When the two air flows pass by each other, the heat from the warm, stale air is transferred to the cold, fresh air through a heat exchanger. These devices will help keep your home warmer in the winter, while saving you energy and money because you do not have to reheat the air coming into your home quite as much.

Alaska HomeWise articles promote home awareness for the Cold Climate Housing Research Center (CCHRC). If you have a question, e-mail us at akhomewise@cchrc.org. You can also call the CCHRC at (907) 457-3454.

The second annual Sylvania Socket Survey was just released, illuminating consumer attitudes and behaviors when it comes to energy-efficient, green lighting. According to the report, a whopping 74% of respondents are now using compact fluorescent bulbs (CFLs), although the same fraction are not aware of the impending congressional ban on incandescent bulbs that begins in 2012. Perhaps not surprisingly, there still isn’t that much knowledge about next-generation LEDs.

The federal government will take steps to cut its energy use and reduce its heat-trapping emissions by 28 percent by 2020, compared with 2008 levels, the White House announced on Friday.The government is the largest user of electricity and fuel in the country, accounting for roughly 1.5 percent of the nation’s annual energy consumption and emissions of the gases that contribute to global warming. The White House said the emissions reduction goal, if met, would save $8 billion to $11 billion in energy costs over the next decade.

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From the Garden of Eden to Noah’s assembling of animals on the ark, there are no shortage of biblical references to caring for the environment, and as society takes steps to become more green, so too are the religiously devout.

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Everybody wants to find ways to save money around the house — but who can afford to break the bank on pricey improvements just to save a few dollars, right?

Wrong. These days there are plenty of small home improvements you can make that pay for themselves (or nearly so).

We’ve asked the experts to tell us some of their favorites. Flip through these, then get busy … and watch the dollars and cents start adding up. 

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By CCHRC Staff

Q: What are some of the risks with adding insulation to the outside of my home?

It is a complex issue, and what works in one part of the state may not necessarily work in another. The key to successful exterior insulation is to keep moisture from entering the wall from the inside and from the outside. If you cannot ensure this will not happen, then you are insulating at your own risk. If too much moisture moves into your walls or ceiling, then you could end up with mold and rot.

For years, people in Fairbanks and other parts of the state have been applying various amounts of foam insulation to the exterior of their houses. However, this method can also contribute to moisture problems if not done correctly. These problems can originate from inside or outside the house.

In local building code, cold climate construction requires a vapor retarder, placed near the interior wall surface. Most times this consists of a well-sealed layer of polyethylene under the sheetrock.

This barrier membrane is designed to prevent indoor moisture from getting inside walls where it can condense. When you have heat and humidity inside, and a leaky vapor barrier, moisture may get inside a wall. If there are not enough outside layers of foam insulation, this moisture will cool, condense and begin causing problems. Having the proper ratio of insulation on the outside of the wall to insulation on the inside of the wall will help solve this problem.

Also, if you have a good existing interior vapor retarder and add exterior foam, you are creating, what many call, a “double vapor barrier,” as the foam is also relatively impermeable. Should enough moisture find its way into a wall under these conditions, it may have a difficult time drying out.

In some environments, there is the possibility that rain water can work its way into the wall, especially in combination with wind. To minimize these problems, your home may benefit from large overhangs, gutters and proper drainage. Another option is a good draining type of house wrap installed in combination with adhesive or metal flashings, which are applied before putting on the foam. These steps will ensure that if any water gets behind the foam, it will drain down into the ground rather than soak into your framing.

If you put exterior insulation on your house, it will become much tighter. As a result, your indoor humidity levels may increase and the house may no longer receive enough fresh air, making it necessary to better ventilate your home.

An early indicator of elevated indoor humidity levels are your windows. If you are seeing a lot of condensation, especially on a good quality doublepane or triple-pane, that is a good reason to look for a cause.

Q: Are electric stoves more energy efficient than propane ranges?

Strictly, electric energy is very efficient in a range, but it depends on what the cost of propane is, and what the cost of power is in relation. You would have to figure out how much energy, in BTUs, you are getting out of your propane and what you are paying for your kilowatt hours, and compare the two.

Alaska HomeWise articles promote home awareness for the Cold Climate Housing Research Center (CCHRC). If you have a question, e-mail us at akhomewise@cchrc.org. You can also call the CCHRC at (907) 457-3454.

A proposal by Gov. Sean Parnell to suspend Alaska’s motor fuels tax may undermine federal transportation funding, U.S. Rep. Don Young said Tuesday.

In a statement, the Republican lawmaker commended Parnell, also a Republican, for trying to relieve Alaskans’ “pain at the pump.” But he added: “By suspending the state gas tax, the challenge will be greater in convincing other members that Congress should continue its investment in Alaska’s infrastructure.”

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A telephone survey aims to find out how residents of the Fairbanks North Star Borough go about heating their homes.

Borough officials want to use the information to help develop a pollution control plan for PM 2.5, tiny particulates known to embed in the lungs and cause health problems. Wood smoke is believed to be the biggest contributor to the PM 2.5 problem.

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