State-Level Energy Efficiency Potential in the U.S. Single-Family Housing Stock
A homeowner needs to replace an HVAC system. What replacement equipment best meets the multiple goals of affordability, energy efficiency, and comfort? Is the upfront cost of a highly efficient variable-speed heat pump in the ...
A homeowner needs to replace an HVAC system. What replacement equipment best meets the multiple goals of affordability, energy efficiency, and comfort? Is the upfront cost of a highly efficient variable-speed heat pump in the ... [continue reading]
Download BEopt and EnergyPlus or DOE-2. Once they are installed, start BEopt and select either New Construction or Retrofit mode. Geometry screen. Click and drag to draw your building floor plan. Options screen. Select building ... [continue reading]
The story of BEopt starts in October 2000, when a seminal two-day workshop was held at the National Renewable Energy Laboratory (NREL) to explore the then-novel concept of zero net energy (ZNE) buildings. Representatives from the ... [continue reading]
With the recent increase in multifamily housing construction, combined with some builders’ desire to seek green certifications, establishing a user-friendly blower door test protocol that achieves repeatable results would allow multifamily buildings to achieve ... [continue reading]
To quote the wise Yogi Berra, “You’ve got to be very careful if you don’t know where you are going, because you might not get there.” In terms of ... [continue reading]
As any BPI Building Analyst will tell you, it’s hard to become adept at combustion testing. It takes lots of practice, in real houses, with real mechanical equipment. No amount of classroom training ... [continue reading]
As a longtime writer about software for Home Energy, I get asked one question more often than any other: What software do you recommend for companies involved in energy auditing, weatherization, or residential retrofitting? The ... [continue reading]
Thanks for your interest in contributing a blog to the Building Performance Journal (formerly Home Energy magazine). We’re ...
Energy efficiency is good for the economy, good for families, good for workers, and good for the environment.