All Blog Posts (975)

sustain’ Magazine: Achieving Passivhaus in the UK: The Reality by Jonathan Hines

In its January/February 2012 edition, , one of the UK's leading environmental journals, featured an article by Jonathan Hines of Architype Ltd on achieving Passive House in the UK using two well-designed Passivhaus schools as examples. Download article (PDF, 6.4MB; as published in , Jan/Feb Edition, page 39-41)

 (from Ipha)

Added by Guido Schuler on January 11, 2012 at 12:30am — No Comments

Heat transfer: How Heat Gets Out of Your Home and Costs You Money.

by Don Ames,  www.detectenergy.com

Heat flows out of your home in two ways, transmission and air leakage. Transmission and air leakage occur through all surfaces of the home - walls, floor, roof, windows and doors.

The amount of heat transfer depends on two factors: thermal resistance and surface area. Thermal resistance has to do with the quality and quantity of the material in the walls, floor, roof, windows, and…

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Added by Don Ames on January 10, 2012 at 10:00pm — No Comments

UK Passivhaus Design Competition

UK Passivhaus Design Competition 2012

Added by Guido Schuler on January 10, 2012 at 7:04am — No Comments

Why Use Foam Insulation In Your Home?

If you decide to construct your home or are planning to remodel an existing home, you have many options. A big choice to make is whether or not to insulate with old or new concepts. A huge chunk of homeowners use fiberglass insulation and do quite well with it. If you are looking for more efficiency, than read on, because there is a better way. foam insulation is a modern marvel and holds many benefits including efficiency, easy to install and lower lifetime cost. Let me dive in and get more…

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Added by Jason Sherwood on January 9, 2012 at 7:51am — 2 Comments

The Tortilla, The Kitchen Fan and The Energy Auditor

The Tortilla, The Kitchen Fan and The Energy Auditor

So, I was getting ready for my morning bike ride to the coast and decided I needed some calories. Part of my choice was some tortillas. I placed them in the toaster oven and went about my morning. This included drinking my morning coffee and checking my email.

Mmm what is that smell? I had inadvertently put the…

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Added by Glen Gallo on January 9, 2012 at 6:30am — 4 Comments

Today's Power Trip - Heating Duct Insulation and Raccoon Paradise

by Don Ames,   www.detectenergy.com

Please read the article and catch the screen cast at the end of the article.

Earlier in the week, I spoke about construction flaws and how builders have a tendency to build energy waste right into the structure of a home. The contractors really don't mean too, we all understand that, but , never-the-less, poor construction design, short cut methods, and lack…

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Added by Don Ames on January 8, 2012 at 10:00pm — 3 Comments

US beats expectations saving energy

Americans tend to beat themselves up over their imperfections. We eat too much, watch too much TV and owe China too much money. Despite all of our sloth, we can feel good about one area: our progress saving energy.

report issued this week by the Institute for Electric Efficiency found that we saved enough electricity to power almost 10 million homes in 2010 (about 112 MWh). That’s 21…

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Added by Elisa Wood on January 8, 2012 at 5:42pm — 1 Comment

Becoming a LEED AP: Habitat for Humanity, BOULD, and You?

So you have decided you want to earn or become a LEED AP. There is just one small issue, unless you have or are working on a LEED project, just how are you supposed to gain the experience & show documented involvement on a project registered or certified for LEED? (AKA a letter of attestation) As some well know, finding or being able to gain the needed project experience can be a rare opportunity. Fortunately though, the chances for many looking in have an opportunity through a…

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Added by Sean Lintow Sr on January 8, 2012 at 10:00am — No Comments

Where to Look For Construction Flaws and Energy Waste

by Don Ames,  www.detectenergy.com

Construction flaws waste energy, reduce comfort, and encourage building deterioration. A little knowledge about construction methods can help you locate and correct these flaws. Let's face it, homes were not created equal, homes are the result of a hundred hands belonging to fifty different people that will never live in the house, but, never-the-less, have great influence…

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Added by Don Ames on January 5, 2012 at 8:30pm — No Comments

Acronym CRAZY...

I don’t believe this is an industry specific issue but we do seem to have an excess of acronyms. 

For example we have RESNET, HERS, BPI, LEED, CSG, ACCI, ANSI, OSHA, WISHA, OMG, & LMAO! 

Confused yet?  No – then let’s try these on for size… ACH50, ACHNAT, SIPS, DMHP, HP, WH, HVAC, CFM, ELA, SLA and IECC, MEC, ASHRAE but don’t forget NYC! 

BTW can you name EPA, HERC, OSB, PVC, ABS, BD, DB, MDF, MDO, SEER, HSPF, HRV’s, ERV’s, DOE, NGBS, BIA, PV, UV, UVA, UVL, DHW, IAQ,…

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Added by Kent Mitchell on January 5, 2012 at 5:30pm — 4 Comments

Measuring Matters

Perhaps the greatest challenge to promoting energy efficiency is that you can’t see it. People understand electricity produced from a PV collector on the roof, and a kWh meter can easily report precisely how much energy was generated. But with more-efficient products, savings cannot be directly measured; instead, one must reckon the difference between a real and a hypothetical situation. This complexity creates a lingering uncertainty whether the promised savings did or did not actually…

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Added by Home Energy Magazine on January 5, 2012 at 9:36am — No Comments

Texas Worried About Not Having Enough Electricity in 2012

2011 was a challenging year for the operators of the Texas electricity grid.  2012, however, isn’t likely to be any easier. This according to ERCOT who holds the responsibility of insuring the reliability of the Texas grid. There are a large number of power plants that are scheduled to be decommissioned over the…

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Added by Holbert Janson on January 2, 2012 at 7:54pm — 3 Comments

Ridge Vent . . . and Nothing But the Ridge

Can anyone convince me that this picture shows anything other than the fact that the ventilation provided here is effective only in the first five inches down from the ridge? And yes, there is continuous soffit venting that is baffled and open to the…

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Added by Ed Voytovich on December 29, 2011 at 12:20pm — 13 Comments

Today's Power Trip - Weatherization and Infrared Camera

by Don Ames,  www.detectenergy.com

Got a phone call from a Son today, he was down at the local Mall looking to exchange a shirt he got for Christmas. This is one of those times when I wish that cell phones would just go away. Why do we need to be in constant touch with everybody all the time?

"Yes son, I bought the shirt there and I don't know why I cut the tag off and I don't know what happened to the…

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Added by Don Ames on December 29, 2011 at 12:00pm — 3 Comments

home weatherization

I have a big bay window like 10'-11' wide and 4' high. At the winter time this window brings cold into the room. It is not convenient to weatherize this window from inside. I thought to cover it with plastic sheeting from outside. I have a brick walls around this window outside. I bought a frost king weatherseal clear tape for outdoor but it lasted only one week and refused to hold longer. I tried a gray duct tape but it lasted only one day and gave up. I looked what other people are using…

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Added by isaak goldman on December 27, 2011 at 12:51pm — 1 Comment

A Passivhaus Retrofit in Minnesota

A remodeling project in Minneapolis is on track to become one of the first in the U.S. to meet Passivhaus Institut’s EnerPHit standard

A Passivhaus Retrofit in Minnesota

Added by Guido Schuler on December 23, 2011 at 8:10am — No Comments

Making energy efficiency possible for middle-income homes

December 2011, Lawrence Berkeley Labs report for the EPA.  Very significant document that establishes how to make it desirable and feasible for financially stressed middle-income Americans to improve their energy efficiency through innovative government incentives.  Worth a read for any serious professional and has lots of useful data to back our arguments.…

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Added by Brion Battin Black on December 22, 2011 at 9:30am — 1 Comment

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