June 12, 2020

Does Your Insulation Have Low Embodied Carbon?

Zero energy homes need thick layers of insulation, but some materials have serious climate impacts. Identify the key factors that affect the carbon footprint of insulation materials and some good choices for future projects.

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June 11, 2020

Energy-Efficient Windows Help Close Holes in Your Envelope 

Seven times more heat can escape through a window than a wall. There are more choices than ever to balance energy performance with the other important benefits of windows. Choosing windows wisely will help close the gap.

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June 8, 2020

The Smog in Your Kitchen – What the Experts Say

Experts Say Cooking with gas is hazardous to health, according to research that spans the last several decades. A recent study puts the issue in stark terms. Air inside homes can be more unhealthy than outdoor pollution even during a wild fire that fills the air with smoke.

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June 8, 2020

The Many Benefits of All-Electric Design

Decades of advertising tell us that gas is cheap. Even without factoring in the cost of climate change, natural gas is no longer the least expensive choice for residential use. It’s a new era of cost-effective, low carbon, all-electric homes.

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May 20, 2020

Four Steps to Zero Carbon Buildings

New homes and buildings will stand for decades, if not centuries. The carbon emissions embodied in the building materials and resulting from the manufacturing and construction processes must be factored into their overall carbon footprints. These four steps will get us started on the path to zero carbon.

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May 19, 2020

Electric Transit is Clean, Healthy, and Efficient

Buses are going electric around the US and all over the world. Transit fleets and school districts are seeing the benefits of cleaner air and lower operating cost. And we all benefit from lower carbon emissions.

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April 13, 2020

Carbon Emissions: We Broke It, We Fix It!

There’s no time to lose. We must move rapidly and decisively toward a carbon-neutral economy. Direct action is essential, but cannot happen fast enough. After you have reduced carbon in your home, vehicles, and businesses, there is still more to do. Here’s how.

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April 13, 2020

A Zero Carbon Building Primer

Zero energy buildings are here and growing in the market. Now it’s time to set our sights on the next step in the evolution of building design and construction: zero carbon.

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March 18, 2020

The Mystery of Misapplied Mini-Splits

If you’ve ever heard that a mini-split heat pump wasn’t fulfilling its potential there is no mystery — the problem was almost certainly errors in design or installation. Here’s everything that needs to happen for a proper installation and reliable performance.

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March 18, 2020

Production Builders, It’s Time to Sell Zero Energy Homes 

Zero energy homes are poised to go mainstream. Large builders have the scale necessary to launch the market into this new territory. Homebuyers save and builders profit.

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March 14, 2020

Make Hot Water the Modern Energy Efficient Way

Heat pump water heaters have been available for several years and are gradually gaining acceptance in new construction as well as in the replacement market. Here is guidance for the best application of this technology with an emphasis on colder climates.

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February 15, 2020

Wall Upgrades for Deep Energy Retrofits

Upgrading the energy performance of walls in an existing home is the most challenging aspect of a deep energy retrofit. One of these eight options will work for just about any zero energy renovation.

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