RETROFIT OF 10,000-SQUARE FOOT HISTORIC BUILDING
FOR A CORPORATE HQ
HVAC SOLUTION NEEDED TO SHOWCASE EFFICIENCY
VRF ZONING: IDEAL SOLUTION
According to Janquart, VRF zoning technology was an ideal choice for Franklin
Energy for several reasons. Topping the list was energy savings, but the system
• Ease of installation.
• Superb quietness and sound attenuation
• A great capacity for load-sharing unavailable with conventional systems
• Ingenious INVERTER®-driven compressor
• Small footprint and lightweight modularity of the outdoor units
• Industry-exclusive simultaneous cooling and heating ability.
“Franklin Energy has an excellent reputation for
helping utilities and municipalities all over the U.S.
achieve impressive energy savings,” said Mark Kuntz,
P.E., senior vice president, product strategy and
engineering, Mitsubishi Electric. “This is a high-profile
project for us.”
Kuntz said Mitsubishi Electric is pleased that Franklin
Energy selected the Mitsubishi Electric VRF zoning
system for its headquarters building. “Not only do we
respect Franklin Energy’s work in the area of energy
efficiency, but the installation provided an opportunity
for our engineers to collect 12 months of solid energy-savings quantification,” Kuntz said.
Using actual utility meter data as well as measured
data from an energy monitoring system, the results
showed significant energy savings compared to the
average Commercial Buildings Energy Consumption
Survey (CBECS) energy usage for a building of its size
and construction type.
The results validated the original energy model projec-
tions. The actual energy usage for electricity and gas
were within 1% and 5% of the models, respectively.
While saving a great deal of energy is an excellent
result, comfort was still a top priority for Franklin
Energy and the people working on site. “Because
of the building’s orientation and outdated glass
windows, solar gain was a huge issue for our HVAC
systems selection,” Schueller said. “This Mitsubishi
Electric VRF zoning system has been a lifesaver for
individual comfort and for helping us save on energy
costs. Because of the Mitsubishi Electric INVERTER®
technology and individual room controls, the perimeter
offices in this old building have been very comfortable
in all seasons.”