Thermostatic Expansion Valves (TEV or TXV), one of the most popular metering devices for residential, high-efficient air conditioning and heat pumps, have performed almost impeccably for decades. Unfortunately, some manufacturers in the past few years have identified batches of valves that have had high superheat issues. Have we just been blind for so long, not realizing these problems existed? Or have these valves really been so reliable for such a long time?
If you think you…Continue
I am a whole house fan and attic ventilation expert in Temecula CA. I started studying whole house fans in 2008 when my wife, Darlene, and I moved from Manhattan Beach. I would really like to share my knowledge with all of you but I want to be sure I don't antagonize you with more commercialization than you want. Please let me know your opinion and if you can, send me some examples of acceptable blogs and unacceptable ones.
For as long as I can remember, the agreed epidemic with ductwork was always undersized return ducts. Although we are far from perfect with duct sizing in New England, I have frequently seen great strides in fixing this issue - particularly with replacement systems. Lets face it, you should just be properly designing the duct system on new installations. Undersized ducts cause great restrictions in airlfow, raising…Continue
Added by Christopher Morin on July 17, 2014 at 5:29pm — No Comments
Homeowners are often aware of the different problems they experience in their homes: uncomfortable rooms, high utility bills, poor indoor air quality, etc. However, homeowners are generally unfamiliar with the concept of Home Performance, the Whole House approach, and how energy efficiency upgrades can address these concerns. We regularly hear these stories and find that by listening, asking the right questions, educating, and providing guidance, we can help homeowners feel…Continue
Here are the final numbers for my Energy Upgrade California home retrofit.
Table 1. Air…Continue
On the flight home from ACI’s 2014 National Home Performance Conference, I read Charlie LeDuff’s Detroit: An American Autopsy. It’s a gritty, sad story about the decline of one the greatest U.S. industrial cities. It was fitting that ACI’s conference was held in Detroit–thanks to the growth of the auto and wartime industries in the early 20th century, Detroit was the birthplace of the U.S. middle class. But according to LeDuff, Detroit, which “once led the nation in home ownership,…Continue
This is a great free resource for building pros everywhere- to hear the interview about its creation, check out the latest Building Performance Podcast with my hero Lew Harriman and his co-conspirator Terry Brennan:
To download the guide,…
Added by Corbett Lunsford on July 7, 2014 at 4:19pm — No Comments
The Residential Energy Services Network (RESNET) announced its collaboration with the International Code Council last week in an effort to help home builders transition to the new 2015 International Energy Conservation Code (IECC). In the upcoming version of the residential building code, RESNET's HERS Index will be an optional compliance path — some people are saying that this compliance path represents the most significant change coming to 2015 IECC.
What is the…Continue
Let me first start by confessing my guilt... Guilt for being bored easily, guilt for wanting praise, even if it is a pat on my own back for an achievement... Guilt for being a millennial... On the other hand I enjoy working in teams and I encourage frequent communication between all team members from admin staff to auditors, sales staff and crew members to improve our workflow. Yes, I am a millennial, but let me add that there is nothing that makes me cringe more than the excuses I get from…Continue
Cities grafting green-building certifications like LEED into commercial building codes is nothing new, and a number of places like Dallas, Atlanta, Boston and Scottsdale have had such requirements in place for a decade or more.
What’s happening now is that cities are doing likewise with…Continue
Brainy light bulbs. Refrigerators that heat dishwasher water. Elevators that use no more energy than toasters. These are just a few of the “Oh Wow’ topics last week at the annual EE Global conference.
But it was growth in cities – and their buildings – that was clearly on the minds of industry leaders, 500 in total who gathered at the Washington, D.C. event, sponsored by the Alliance to Save Energy.
The US spends $432 billion per year on energy for buildings –…Continue
Added by Elisa Wood on May 27, 2014 at 3:39pm — No Comments
I'm pretty new to this whole industry... And by new I mean that the jumble of acronyms and terminology are still enough to leave me a bit dazed when some well meaning individual spurts off several in one sentence.
Home efficiency is not a field I ever could have imagined being involved in. By training, I'm an a ballerina. I've danced since I was three, trained in NYC, graduated from a conservatory... the works. And yet here…Continue
This list does not represent the entire code, or even all municipalities. Everyone knows those towns that will hit you on every piece of the local code requirements, word for word from the text. But, don't be surprised when code officials, both building and mechanical inspectors, start failing permit inspections for these previously rarely enforced portions of the code! Are you going to wait until enforcement, or lead the industry in doing what the minimum is required by…Continue
Ever wonder how appraisers develop value of houses with green or energy efficient features? Residential Green Valuation Tools was published last month by the Appraisal Institute. The 189-page book has 13 chapters that address the most often asked questions about the valuation process and green building. As the author of the book, I found the challenge of writing this book a great learning and…Continue
Met with Bill Stewart on Monday and signed an agreement for:
I also asked them to move the filter to the return grill so…Continue
Recently, Friedrich has modeled and sold in limited markets their DIY Mini-Split Heat Pump, Breeze. Just a few days ago, they scaled back their rollout in order to meet customer demand by limiting sales to New York and South Florida. I am torn between…
Added by Melissa Ulbricht on May 15, 2014 at 8:32am — No Comments
[This is the third in a three-part inteview with Van Jones, who delivered the keynote address in Detroit, Mich., on April 30, 2014, to attendees of the ACI National Home Performance Conference. The full interview is posted in three consecutive blogs.…Continue
Added by Home Energy Magazine on May 15, 2014 at 2:48pm — No Comments