allowed us to significantly reduce
the overall building tonnage and
When natural ventilation is insufficient for indoor cooling or unemployed during the heating season,
the rooftop packaged units will
deliver ventilation based on CO2
sensors through a dedicated outdoor
air system. Thanks to the building’s
well-insulated envelope, the dedicated outdoor air rooftop packaged
units are able to provide adequate
space conditioning without extra air
beyond the ventilation requirement.
The daylight design was maximized by implementing a custom
skylight design that was carefully
modeled to provide 100% of the daylight requirements from overhead.
Electrochromic glazing was used
in place of the existing windows to
lower the peak cooling demands on
the HVAC system. The design firm
has done multiple plug load studies on similar building types. We
used this knowledge to help inform
a realistic plug load allowance in
Because it was a spec building renovation, there was no way of knowing
who would eventually occupy the
building. Energy use from plug loads
had to be estimated based on the
design firm’s anecdotal knowledge.
The developer created a perfor-mance-based lease for future tenants
with “carrot-and-stick” clauses for
good energy-saving behavior.
In the first year, the PV generated
164,000 k Wh based on metered
data, and the partially occupied
building used 125,000 k Wh, resulting in the building being 30% net
positive. The PV generation is lower
than the predicted 266,000 k Wh/yr
as it was found that one of the inverters failed to report production data.
After it is fully occupied, the
building is expected to be 7 kBtu/
ft²·yr net positive with full PV
TOP The renovation of 435 Indio
Way successfully transformed
a 1970s single-story concrete
tilt-up building into a net zero
energy office that leased in
ABOVE Forty-three custom skylights
designed by the design firm make
the building 100% daylit.
LEFT Many building details are
made from repurposed materials.