Cambridge Energy Barnraising

Last week, we showed you how a local Cambridge organization (HEET–Home Energy Efficiency Team) ‘weatherizes’ a house for fellow Cambridge residents.  Weatherizing a house involves making some basic non-structural changes to a house to reduce the energy needed for heating and cooling and save money on utilities. The homeowner supplies all the materials and HEET provides the knowledge and manpower needed to finish all energy efficiency improvements in a single day.

It’s a great community activity and a fantastic way to meet your fellow Cambridge residents while learning from skilled tradesmen how you can make your own home more energy efficient. And there is always a party to celebrate the completion of another successful Weatherization Barnraising.

The next HEET Weatherization Barnraising is scheduled for Sunday, March 1 between 12:30—5 pm at 120 Chestnut Street and 100 Henry Street, Cambridgeport.

The Work to be carried out on site includes:

  • Spraying the basement rimjoist using RetroFoam, led by Tom Lawler (the head of RetroFoam, a Massachusetts-based insulation company)
  • Using Plexiglas to insulate windows
  • Repairing drywall
  • Weatherizing doors
  • Possible building of an insulated cover for an attic hatch

The number of participants will be limited to assure that everyone has guidance and support from a skilled team leader.  You can sign up today by contacting Steve Morr-Wineman at swineman@gis.net or 617-876-4753.

HEET Barnraisings—a green twist on an old idea


You may remember the scene from the 1985 movie Witness starring Harrison Ford. A group of Amish people converge on a neighbor’s property and assemble a barn in a single montage, a single day. A Cambridge-based co-op  HEET (for Home Energy Efficiency Team) does weatherization work that’s less lofty, but arguably more important to the modern world. It’s a model for what can be done by harnessing the power of progressive community which emerged during the Obama campaign.

As Bob the Builder might say, ‘Can We Caulk it? Yes we can!’

Combining the materials purchased by the homeowner with free knowhow and labor from HEET, the team has weatherized several low-income  homes in Cambridge, with the goal of performing a barn-raising per month. As they do so, they transfer the skills needed to make—and keep— a home more energy efficient to both homeowners and groups of new volunteers. The energy savings persist, putting cash in the pockets of Cambridge residents, which can be spent in the local economy in different ways—a Cambridge mini-stimulus.

HEET grew out of neighborhood organization called GreenPort. The purpose of both groups, according to co-founder Steve Morr-Wineman, is to bring neighbors together to respond to the environmental crisis. A recent project included weatherizing the Cambridgeport Public School, a pioneering public-private-volunteer collaboration with the savings going back to Cambridge’s tax-payers.

Daily KOS thinks the model needs to go national, and so does Warm Home Cool Planet.

Somerville, MA will soon hold their first weatherization barnraising and Watertown, Brookline, Lexington, Medford, Milton, Newton, Beverly, and Boston are thinking about starting their own groups.  I think it would be a good idea for this idea to go nation-wide.  In fact, a weatherization barnraising on the White House might be a very good way to kick-start that process.

Our hats off to the HEET team. You’re doing great work. Expect to hear from us soon.

Boston Globe reporter gets audited

No, our local paper is not in trouble with the taxman (that’s just President Obama’s cabinet picks) but Geoff Edgers from the Boston Globe decided that his heating bills were getting out of control. So he called up his energy provider-National Grid-who sent over a Conservation Services Group auditor to perform a thorough check up on his 100 year old home. Among the pleasant suprises-free CFL light globes to replace his incandescant bulbs. Watch the video below to see what else Geoff learned while making his home more energy efficient. If you’re a Cambridge resident, you can sign up now for your own FREE home energy audit.

Crawlspace 101

This weekend, Warm Home Cool Planet received a message from Lands’ End specifically targeting everyone shivering their way through winter here in Massachusetts.

lands_end

You know it’s cold when folks from Wisconsin are sending you winter sympathy messages via email. Beyond how cold it might be outside, the recent patch of artic weather here in Cambridge has resulted in lots of time spent inside for most residents. For Warm Home Cool Planet, that also means plenty of time to ponder why the ground floor of the house is always colder than the floors above.

A quick search around the Internet revealed a wealth of information on how most houses–particularly those built before the 1970s–don’t have properly insulated crawlspaces.

So if your bottom floor feels like a skating rink, find out why crawl space vapor is reducing your comfort–and increasing your heating bills. We also recommend looking at your all your options for properly sealing and insulating your crawlspace. Depending on the situation under your house, you need to check your polyethylene sheet has the right thickness, and you have the right kind of membrane to deal with moisture build up under your flooring.

Keeping Warm in the Winter: Warm Home Cool Planet Survey of Surveys

If one does a Google search on ‘keeping warm in the winter,’ you’ll find dozens of articles from all over the world, with tips and advice on how to keep warm without breaking the bank. There’s a lot of overlap in these lists, but occasionally you find a unique idea or two. Many of these lists are aimed at the elderly, who have to balance warmth issues with other issues (avoiding slips and falls). You’ll also find a great deal of disagreement about the safety and utility of closing off vents in unused parts of a structure heated by a forced air furnace.

The tips are all common-sensical. But one thing we’ve noticed at Warm Home Cool Planet, if you pile up enough common sense, you frequently find you’ve created an uncommonly useful resource. We read through dozens of postings with the reality of Cambridge winter in mind.

Our Survey of Surveys found the following categories of suggestions:

  • Eliminate drafts—It’s not just about saving money and the planet, it’s about comfort. One thing we hadn’t seen before were these insulated window blinds with magnetic seals at the edges, which come from, no surprise, Montana.
  • Set up a warm room safely—(without causing furnace problems; this means being careful about how many heating vents, if any, you shut. One rule of thumb is to never shut vents that supply more than 15% of your homes total cubic heating volume, and if you are using a heat pump, don’t shut off vents ever, period.)
  • Dress in air-trapping thin layers—much discussion of thermal underwear; downhill skiers seem to know a lot about this.
  • Exercise moderately and appropriately for your age and physical condition.
  • Eat and drink enough; eat and drink warm things.
  • Only use space heaters safely and responsibly. If you die, you will soon grow cold and the space heater will be a waste of money.

Energy Rebates by the Square Foot

The details of an interesting program to encourage energy efficiency in Utah just crossed our desk here at Warm Home Cool Planet.

The Energy Services Efficiency Program… eases the financial burden of making large changes that lower the energy load on the power grid, such as better insulation, more efficient air conditioning systems and improved swimming pool pumps.The rebates could pay more than $500 for improved attic insulation, $350 for a new air conditioning unit and up to $125 for a better swimming pool pump.

Warm Home Cool Planet supports this idea because it achieves two things. It ties the reduction of energy use in each house to specific improvements, and it helps the homeowner make the capital investment in what are becoming tough times for all. Looking at the photo below, it seem like the folks in Utah are getting with the program too:

bilde-3

Larry Morrison, also with Morrison Insulation, said when he learned about such rebates last year, he started alerting all of his customers to the possible benefits. He said it costs about 50 cents per square foot for a typical installation, while rebate programs would reimburse for 35 cents per square foot – as both the St. George and Questar programs do.

Retrofitting Halogen Track Lighting with LEDs? Someday soon, we hope.

With energy savings of up to 80% over Halogen, retrofitting your MR16 track lighting with LEDs would seem to be a no-brainer. The problem is, well, it’s complicated. The prices on this type of lighting are falling fast, and the bottom line is; making a big investment now might not make sense.

LED tracklight

According to Wikipedia, there are few standards for MR16 and MR11 compatible LED lamps, and with a large variety of designs varying significantly in beam control, light quality, efficiency and luminous power, getting the right light for your model of track lighting may be difficult. Or impossible. Most LEDs run on DC current; halogens most often run on 12 volt AC current. So your bulb will need to have an integrated rectifier.

If this is all greek to you, it’s probably not the greatest idea to tackle this solo.

Think twice before placing a huge wholesale order from the Pacific Rim. With reputable sources selling dimmable LED halogen replacements for 30-70 dollars a bulb, you have to wonder about the longevity of a 10 or 15 dollar generic knock-off.

In the pioneering spirit of Warm Home Cool Planet, we appointed ourselves guinea pig and ordered fifty bucks worth of the, ah… affordable bulbs to test in one of our living rooms. We’ll keep you posted on the results.

We’re looking forward to these bulbs hitting the mainstream residential market in the next few years. Stay tuned to this channel.

The Passive House

The concept of ‘Passive Houses’ has been gaining some currency recently. On first glance it doesn’t sound terribly exciting. From this article in the Portland Daily Journal of Commerce, however, you can see that creating a passive house requires homeowners to take a number of active steps towards building or renovating a house that requires very little energy for heating or cooling. Apparently, the benchmark of a passive home is one where less than 15 watts per square foot is used to heat and cool the house during the entire year.

800px-passivhaus_darmstadt_kranichstein_fruehling_2006

Most of the world's Passive Houses are located in Germany or Scandinavia

If you need more information on Passive Houses. Or as the Germans, who invented the concept, call them (PassivHaus), there’s always Wikipedia.