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
Want an excuse to spend a weekend in the Rocky…Continue
Added by Hannah Finch on July 10, 2014 at 12:10pm — No Comments
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 Building America Program is hosting a no-cost, webinar-based training on Retrofitting Central Space Conditioning Strategies for Multifamily Buildings. The webinar will focus on improving the performance of central space conditioning systems in multifamily buildings. Webinar presenters will discuss hydronic heating strategies and the evaluation of Thermostatically Controlled Radiator Valves (TRVs).
Presenters for this webinar will be:
Jordan Dentz, The Levy…
Added by Stacy Hunt on July 7, 2014 at 3:25pm — No Comments
The Building America Program is hosting a no-cost, webinar-based training on Who’s Successfully Doing Deep Energy Retrofits. The webinar will focus on specific Building America projects and case studies that highlight real-world examples of deep energy retrofits that are…Continue
Added by Stacy Hunt on June 24, 2014 at 7:54am — No Comments
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
The 126 apartments that were renovated for this project were made possible by the Hometown Housing Partnership (HHP) of East Lansing. HHP is a nonprofit that has been providing access to affordable housing for over 20 years, and was formerly known as East Lansing Housing and Neighborhood services. In…Continue
Added by Brett Little on June 23, 2014 at 8:08am — 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
Just a quick hello to every one.
We are spray foam insulation equipment, training and product supplier primarily in Ireland and mainland Europe. We have a range of products which you can see on out site CPI Spray Foam Insulation.
We would like to learn more about what is going on in the US and beyond and hope that we could impart some knowledge of our own.
Added by Stephen Driver on June 16, 2014 at 7:30am — No Comments
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
Added by Corbett Lunsford on June 14, 2014 at 11:24am — No Comments
Doing testing of existing homes it is typical to see mottled patterns of surface temperatures with the FLIR Infrared Thermal Imager during Blower Door Testing.
Part of the problem is air sealing and the other part of the problem is poorly installed fiberglass insulation.
This is not a rant against fiberglass insulation (I am a fan of both Rock Wool/Roxul and dense packed cellulose) for retrofit projects. Fiberglass batt or blown insulation can perform fine, if it is…Continue
Added by TJ Alexander on June 12, 2014 at 1:31pm — No Comments
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