A seldom practiced design procedure, equipment selection, has been part of the International Residential Code for many years, and local MA/RI code at least since 2010. This critical step is the second part of residential system design, following a Manual J load calculation and prior to the Manual D duct design. I think confusion around the dated manual has contributed to lack of use and enforcement. Whether you are installing an air-conditioner, heat pump, furnace, or boiler, there…Continue
Selecting the right type of heat pump hot water not only save the energy usage for years to come but also impacts the comfort of your family members in a positive way. There are numerous systems present in the market today that utilize diverse power sources.
Before buying the heat pump hot water system, there are some factors that you need to lay emphasis on such as: the capacity of the heater that can meet your…
Illinois Home Performance has had an exciting month and the program is pleased to announce that it has reached the following milestones:
* MEEA, on behalf of DCEO, is seeking applications for training providers for its Building Science Training Series (BSTS) classes in program year 2012-13. Courses in this year’s BSTS will educate Illinois contractors about the technical and business aspects of the home performance industry and will provide BPI CEUs to…Continue
Added by Andrew Navolio on October 22, 2012 at 3:15pm — No Comments
Some of the positive features of the solar systems are:
Owners of solar systems do not wait for political decisions or global change, they just act.
Solar system is easily recognized sign of high responsibility, environmental awareness and commitment.
Owners of solar collectors are happy with every sun beam and have bigger environmental knowledge.
They enjoy bathing and washing using water heated by the sun - especially in the…
Added by Gjorevski Saso on October 19, 2012 at 3:40pm — No Comments
I've been wondering lately why we're so hell bent on testing houses. After all, we're a bunch of smart building scientist type guys and gals, right? We may not be Joe Lstiburek's (for which our families and fiends, unbeknownst to them, are mighty grateful), but we have a working knowledge of air and moisture movement, thermal and pressure boundaries, various Deltas (T, P, and the rest), and all that other stuff BPI made us learn. We don't assess houses one day in Tallahassee, the next in…Continue
Maureen Mahle is the vice president and director of Sustainable Housing Services for Steven Winter Associates, Inc. She’s also new to the Home Energy Board of Directors. As a welcome to the board, and as an introduction to our readers, we decided to get to know Maureen a little better. Below is our conversation.
"Ma'am, we've just tested your house and found your infiltration rate to be 16.7 ACH50, your R-values to be only 26% of the IECC…Continue
It was my first weatherization conference since becoming the editor of Home Energy. I remember sitting in the crowd listening to the opening speaker and being very inspired. We’re soldiers, I thought. Some of us are on the front lines—the weatherization workers—and some of us, like the staff at Home Energy, offer support from the safety of our offices in Berkeley. We are fighting for our nation’s energy security, and for the health of children and adults, and for the survival…Continue
Added by Jim Gunshinan on October 17, 2012 at 6:00pm — No Comments
The discovery of new materials for making cheap and efficient solar cells is the Holy Grail for solar panels industry.
Some recent findings represent a significant step towards achieving that goal.…Continue
Added by Gjorevski Saso on October 15, 2012 at 1:02pm — No Comments
When your "check engine" light comes on in your car, your mechanic (or you, with a low-cost codes reader) can get a quick readout about the possible problem(s). Now, CA's Title 24 will require something similar for Rooftop HVAC units by 2014.
See this article:…Continue
Lately we've been thinking about how readers who know nothing about Home Energy magazine, or home performance for that matter, would react if they stumbled upon our website. Yes, our magazine is aimed at home performance professionals, but what about the people that are just entering the profession? Or those that are thinking about it?
In an effort to help those individuals understand what our industry does, and how our magazine is connected, we came up with the following…Continue
Added by Home Energy Magazine on October 11, 2012 at 4:31pm — No Comments
Back in May, I was looking to buy a new flat screen computer monitor for my home office. After spending ten minutes searching online, I found the best deals at J&R Electronics and decided to go down to their Sunnyvale store to make sure that I could find a model that would connect successfully to my MacBook Air laptop. I was overwhelmed by the vast selection of flat screen monitors and really had no idea which one to go for after I narrowed my search down to a 23" size monitor and a…Continue
Added by Alex Katzman on October 11, 2012 at 11:49am — No Comments
Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/
The business and technology worlds make much of innovation and how it will power the future. One process that has become popular as a means to foster innovation in companies is design thinking. Tim Brown, the CEO and president of …
I have a theory for what the N stands for in the N factor but really no clue. I understand what the n factor intends to do and how to use it but fail to understand how it applies in the real world and in particular to San Diego.
The N factor is a correction number that smooths the data for blower door numbers in multiple climate zones of homes of different size and height and brings the homes into a level playing field. We then can use this number…
When I picked up a gallon of milk at the store today, I looked at it in a new way. I was buying energy.
This insight came courtesy of the US Energy Information Administration‘s recent ‘Today in Energy’ article about industrial energy consumption.
It turns out that we use about 30 percent of our energy for industrial processes, according to the federal agency. But it’s hard for most of us to grasp…Continue
Added by Elisa Wood on September 28, 2012 at 3:24am — No Comments
Today the National Association for State Community Services Programs (NASCSP) and the Community Action Partnership celebrated the one-millionth home weatherized nationwide since April 2009. Partnering with state and local…Continue
Added by Home Energy Magazine on September 27, 2012 at 7:01pm — No Comments
While attending the NASCSP conference last week in Atlanta, Georgia, the overall message was: How do we keep the Weatherization Assistance Program (WAP) relevant in the future? Also, how do we find more funding to keep our programs alive post-ARRA?
Along with a lot of brainstorming and industry conversation happening around the two questions posed above, NASCSP took one of the sessions to tell attendees about their initiatives for…Continue
Added by Macie Melendez on September 25, 2012 at 2:53pm — No Comments
The Gulyas residence in Bloomington, Indiana was one of the first homes in Indiana to receive LEED for Homes Platinum certification. Through the use of passive house techniques and additional sustainable design strategies this project easily met and surpassed the criteria for LEED.
A home energy metric measuring energy per square foot calculation and spreadsheet was created by Allison Bailes III, PhD, to help effectively measure electric and gas usage in a house.…
Added by Home Energy Magazine on September 25, 2012 at 2:51pm — No Comments
Working with my customers and friends that are home performance contractors we always seem to be seeking answers to questions such as:
What will make my business survive in the short term?
What does it mean to run a successful home performance business?
What can I do if my local utility rebates, tax credits, and programs change?
For the most part it is true that individuals and…Continue