to download this software.
is a sophisticated, yet
easy to use building energy use analysis tool which provides
professional-level results with an affordable level of effort.
This freeware tool was designed to allow you to perform detailed
analysis of today's state-of-the-art building design technologies
using today's most sophisticated building energy use simulation
techniques but without requiring extensive experience in the "art"
of building performance modeling. This is accomplished by combining
a building creation wizard, an energy efficiency measure (EEM)
wizard and a graphical results display module with an enhanced
DOE-2-derived building energy use simulation program.
the QUick Energy Simulation
Something for everyone...
Imagine a building energy simulation tool comprehensive enough
to be useful to ALL design team members, yet so intuitive ANY
design team member could use it, in ANY or ALL design phases,
including schematic design. eQUEST is well named because it
provides something the you've been looking for, but have been
unable to find a sophisticated, yet easy-to-use building energy
analysis tool. With eQUEST, you'll be able to provide
professional-level results in an affordable level of effort.
Evaluate today's building technologies at the speed of today's
eQUEST was designed to allow you to perform detailed analysis of
today's state-of-the-art building design technologies using today's
most sophisticated building energy use simulation techniques but
without requiring extensive experience in the "art" of building
eQUEST = enhanced DOE-2 + Wizards + Graphics
This is accomplished by combining a building creation wizard, an
energy efficiency measure (EEM) wizard, and graphical reporting
with a simulation "engine" derived from the latest version of
DOE-2. Reliable detailed simulation has never been easier!
eQUEST features a building creation "wizard" that walks you
through the process of creating an effective building energy model.
This involves following a series of steps that help you describe
the features of your design that would impact energy use, such
- architectural design
- HVAC equipment
- building type and size
- floor plan layout
- construction materials
- area usage and occupancy
- lighting system
Building Creation Wizard
The eQUEST building creation wizard first requests the most
general information about your building design, and then delves
into progressively deeper detail. In all, the building description
process comprises 23 data-entry steps - each represented by a
At each step of describing your building design, the wizard
provides easy-to-understand choices of component and system
options. It also offers advice in the form of "intelligent
defaults" for each choice. (These defaults are based on more
information gathered early in the description process). In
addition, eQUEST automatically skips steps that do not apply to
Although the building description process can get quite
detailed, it isn't necessary to complete every single step in the
wizard. If you choose, you can "bail out" of the description
process once you are satisfied with the level of detail. At that
point, the wizard fills in any missing information using the eQUEST
"intelligent default" process.
After compiling a building description, eQUEST produces a
detailed simulation of your building, as well as an estimate of how
much energy it would use. Although these results are generated
quickly, they are quite accurate because this software utilizes the
full capabilities of DOE-2 (the latest version of a well-respected
and popular building energy simulation program developed over the
last 20 years by the U.S. DOE).
Within eQUEST, DOE-2 performs an hourly simulation of your
building design for a one-year period. It calculates heating or
cooling loads for each hour of the year, based on the factors such
- plug loads
DOE-2 also simulates the performance of:
- other energy-consuming devices
During the simulation, DOE-2 also tabulates your building's
projected energy use for various end uses such as:
- plug loads (computers, appliances, copiers, etc.)
Viewing eQUEST Results
eQUEST offers several graphical formats for viewing simulation
results. For instance, you can display graphs of estimated overall
building energy on an annual or monthly basis. (See Figure 1.) You
also can compare the performance of alternative building designs.
(See Figure 2.)
In addition, eQUEST allows you to perform multiple simulations
and view the alternative results in side-by-side graphics. It
- Energy cost estimating
- Daylighting and lighting system control
- Automatic implementation of common energy efficiency measures
(by selecting preferred measures from a list)
The current version of eQUEST provides even more comprehensive
analysis capability. It allows the advanced user to input
additional building details to analyze complex buildings. A
three-dimensional view of the building geometry is available in
this version, as well as HVAC system diagrams. In addition, rate
schedules for PG&E, SCE, and SDG&E are embedded in the
(Click for larger image)
Figure 1: A building's
projected monthly energy consumption, with consumption attributed
to various end-use categories.
(Click for larger image)
Figure 2: Comparison of monthly energy use for
base building design and four alternatives which incorporate Energy
Efficiency Measures (EEMs)
We encourage beginning eQUEST users to read the tutorials
for a solid background in program fundamentals.
For more information about training options, visit the eQUEST home
The best way to get support for eQUEST
is to join the equest-users mailing list, where energy
professionals from around the globe discuss tips, tricks, and best
practices. A companion list, bldg-sim, discusses building energy simulation
topics more generally and is not specifically focused on
Please note that Energy Design
Resources is not the developer of eQUEST and is not able to provide
direct training and support.
System Requirements and Installation
eQUEST runs on Windows
7/Vista/XP, and previous versions of Windows dating
back to Win98. There is no Mac OS X version.
Because of the large file size of eQUEST's setup.exe file, we
suggest that you download the program to your hard drive (select
"save" after left clicking the link, or right click on the link and
"save target as") rather than opening or running the installation
procedure from your browser.
Also, because of MS Windows 7 security considerations and to
facilitate installation within military and corporate IT
environments, eQUEST files are now installed by default into your
"My Documents" folder (i.e the installation option "Just Me" is now
to download this software.