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A developer meets with a landscape architect at the site.
A home is tested at two points for enclosure air leakage
A manometer is used to measure pressure differentials between indoors and outdoors when testing whole-house air leakage.
A ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location
Air seal whole-house fans to minimize air leakage.
All of the exhaust fans are wired to one labeled switch at the electrical panel
An HRV or ERV provides balanced ventilation
Borate-treated roof trusses and concrete masonry unit (CMU) walls are among the pest-resistant features of these Florida homes.
Central-fan-integrated supply ventilation with exhaust fans for intermittently balanced whole-house ventilation
Deep overhangs and a covered front porch provide solar window shading from high summer sun and help keep the entryway snow-free in winter.
Exhaust fan installed but in wrong direction causing excessive bend and duct is uninsulated
Formula 4.2 from ASHRAE 62.2-2010 for fan flow rate required to achieve an effective ventilation rate
Green Extreme Homes in partnership with Carl Franklin Homes provided a gut-rehab to this 1953 suburban home in Garland, Texas which became the nation’s first renovated home certified to the U.S. Department of Energy (DOE) Zero Energy Ready Home program.
Heat Recovery Ventilator (HRV) or Energy (Enthalpy) Recovery Ventilator (ERV)
In line exhaust ventilation installed
Individual metering or submetering of each unit allows residents to understand and better manage their water use.
Install the whole house fan in the ceiling in a central location in the house
Insulated whole-house fan cover
Palo Duro provides every home owner with a manual providing equipment warranties, maintenance tips, certifications, and photos of each wall of the home before drywall installation so home owners can see where wiring and plumbing are located.
Properly installed ERV/HRV
Properly installed ERV/HRV
Rater-measured ventilation rate is within 100-120% of HVAC contractor design value (2.11)
Shed roofs provide more space for PV panels in this multifamily project near Denver,  Colorado.
Southern Energy Homes constructed the first DOE Zero Energy Ready certified manufactured home and DOE collected 15 months of performance data on it, a HUD code home, and an ENERGY STAR home.
Supply-only ventilation with a fresh air intake ducted to the return side of a horizontal air handler unit located in the attic
Supply-only ventilation with a fresh air intake ducted to the return side of a vertical air handler unit located in the house
Target Ventilation, Formula 4.1a from ASHRAE 62.2-2010
Test the thermostat fan, cool, and heat settings
The 6.8-kW solar photovoltaic panels on this energy-efficient home produce enough electricity to power the home and an electric car.
The asymmetrical design of this home offers a large uninterrupted south-facing roof plane for solar photovoltaic and solar thermal panels.
The pier foundation that lifts this home above flood waters is visible in this photo taken before the skirt walls were added.
The varied roof pitches offer multiple options for solar panel placement regardless of home orientation for these production homes in Colorado.
The ventilation control is clearly labeled by the installer
The ventilation controller is next to the thermostat and has a manual override button
This 4,305 ft2 zero energy ready home has almost no electric bills thanks to very high-efficiency construction and a solar electric system.
This bath exhaust fan ventilation control can be set by the HVAC technician for continuous operation, delayed shut off, or a set amount of minutes each hour
This builder in central Washington state chose durable low-maintenance exterior finishes like concrete, metal roofing, and metal siding and stone and gravel flooring.
This DOE Zero Energy Ready Certified home in Connecticut combines traditional design details with high-performance energy efficiency to save more than $2,000 per year in energy costs compared to a minimum-code home.
This DOE Zero Energy Ready certified home in San Marcos, California has a high-performance building envelope and HVAC equipment plus solar electric panels to meet all of the home’s electric needs over the course of the year.
This HRV, installed in a conditioned attic, provides balanced ventilation to the whole home
This production home was built to the high-performance criteria of the U.S. Department of Energy’s Zero Energy Ready Home program.
This urban infill micro-community in South Seattle contains 42 attached and detached homes, all certified to the DOE Zero Energy Ready Home criteria.
Ventilation tied into the return with a mechanical damper
Ventilation tied into the return without a mechanical damper
Whole house fan cover details
Whole house fan with a built-in insulated cover
Whole house fans draw cool night-time air in through open windows and expel hot house air into the vented attic
With exhaust-only ventilation, the building is under negative pressure
With supply-only ventilation, the building is under positive pressure
Wrong – Whole house fan installed with holes in surrounding platform that need to be air sealed
Wrong – Whole house fan installed without an insulated cover