When is it ok to put your ducts into an attic, tight up against the Roof Deck? With more conventional building techniques, I would have to argue: NEVER! I do not care how the homeonwer pleads to keep their storage space, you cannot count on delivering cool air to the conditioned space with said branch duct. Even if you did figure out a way to secure the duct to the peak without crushing the inside diameter, the CFM is not the problem. The real issue becomes the dry bulb temperature of…Continue
RaterFest! kicks off this Friday, September 5, at Covenant Heights in Estes Park, CO. We still have a few spots left in the bunkhouse!
The registration cost of $375 includes meals from Friday dinner until Sunday lunch, zip-lining, Colorado craft beers, 10 fantastic sessions, and housing for Friday and Saturday night. We also have the option to choose a Saturday day pass.
And don't forget... RaterFest! is proud to be certified for 12 RESNET Rater Professional…Continue
Added by Hannah Finch on September 2, 2014 at 9:30am — No Comments
As I had brought up years ago, ACCA's Manual S was in dire need of an update. Written in 1995, Manual S Residential Equipment Selection was passed by with huge technical and efficiency strides within the…Continue
After the first week, the ductless heat pump and I became so close that could never even think of her as ugly. But some folks don't like the look.
In an analogy to current medical practice, the mini-split heat pump is fabulous but the side effects are minimal for some people. In those cases, we have a cure for the side effect, the LED sandwich light that mesmerizes the eyes softly and makes heat ugly pumps disappear right before your very eyes.…Continue
Added by Joseph Lamy on August 19, 2014 at 4:09pm — No Comments
If you have not been asked to complete a duct test by your local Massachusetts Inspector, it is just a matter of time before you are surprised by this stringent/updated code requirement. Despite some push-back from Contractors and Inspectors, all of MA is required to test new or altered duct systems. All of MA adopted the 2012 International Energy…Continue
Zero Energy Home Friends,
My daily PV output from a 6.56 kW PV system has averaged 22.7 kWh/day over the last two years.
irrday= cumulative kWh/m2/day plane of array
pvptmp= array temperature (F) taken on back on one of the modules
Added by Danny S. Parker on August 17, 2014 at 12:55am — No Comments
RaterFest! has many traditions... Bon-fires, Rater Jams, Rater Olympics, Colorado Craft Beers...
Perhaps one of the less well known, but dearly loved, is the tradition of Raters sharing stories about their own homes.
This year we are excited to have Jeremy Draper, who will tell his unique story of building his first home using as much recycled or re-used materials as possible. He is nothing short of a Craiglist master.…Continue
Added by Hannah Finch on August 13, 2014 at 12:00pm — No Comments
Added by Christopher Morin on August 12, 2014 at 1:19pm — No Comments
Hi there, I'm new here. Not sure if this make sense here. But for sure, you will tell if it's not.
I'm Portuguese, I've 47 years old, 3 children, and spent the last 3,5 years of my life on a project I've called Casa Automatica.
The project started by being just an home control system, where I've tried to combined some security features, water control and home network, in a package, using and sharing an internet connection. The system is presented here…Continue
You took a class, or read a book, got BPI or HERS Rater certified, or just bought some diagnostic equipment. Your company was heading in the right direction in the beginning, but NOW WHAT? Earning certifications and owning diagnostic tools is a step in the right direction, but it’s only a step… the real power of your home performance focus is in practicing what you preach with testing on every job, and using it to…Continue
Added by Corbett Lunsford on August 9, 2014 at 11:01am — No Comments
Added by Hannah Finch on August 8, 2014 at 2:30pm — No Comments
There are two very active posts on zoned system bypasses. http://www.energyvanguard.com/blog-building-science-HERS-BPI/bid/44187/Navigating-the-Twilight-Zone-The-Hidden-Flaw-in-a-Zoned-Duct-System
On August 4th, the Building Performance Institute (BPI) announced a new certification focused specifically on blower door and duct blaster concepts. The announcement came during a monthly meeting for approved BPI Test Centers. The official announcement is slated to come soon. BPI Infiltration and Duct Leakage, or BPI IDL for short, will be a standalone certification that emphasizes proper handling of energy auditing equipment - and you heard it here…Continue
Added by Everblue Training on August 7, 2014 at 7:00am — No Comments
General Labor/Painting/Building Maintenance Position. Some construction knowledge is preferred. Priority Energy is a leading energy solutions companies. 1.800.737.2299
Added by Robert Schildgen on August 6, 2014 at 2:04pm — No Comments
As part of Home Energy’s 30th birthday celebration, we are pleased to reprint a 1994 article by Michael Uniacke describing the way he taught building science in a community college (see the article here). Mastering the intricacies of the building science related to energy performance is no…Continue
Added by Hannah Finch on August 2, 2014 at 9:00am — No Comments
Every home is unique and differs from the last. It would be a perfect world (from a project planning standpoint) if every home were a cookie cutter from the previous install, however this is not always the case. I have been in the construction industry doing remodeling and even building new residential homes for over 25 years. Along the way I have run into some interesting situations in which I was not prepared and wished I was. Although this has been sometimes fun and challenging at times,…Continue
It is all ways great advice for small businesses to diversify, I know it pulled our company through a recession and is solely responsible for us coming up on our 20th year in business. With home improvement companies and electrical contractors, the advantages of being a Certified Infrared Thermographer go far beyond diversifying the small business…Continue
Added by Don Fitchett on July 24, 2014 at 7:07pm — No Comments
Lets face it – building science is pushing the performance of adhesive tapes to a new levels and though I can’t profess to have my daughters’ ability in making fashionable duct tape purses, I have been know to mis-apply good tape to get me out of a bind! I think Red Green would be impressed!
If you send me your photos, I…Continue
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