Portfolio | Old Capitol Building Upgrades

"Capitol"izing on efficiency

Project Overview

Improving the state of Washington’s Capitol Campus District Energy (DE) infrastructure.

Services Performed
  • Olympia, WA

The state of Washington’s Department of Enterprise Services was looking for a solution to upgrade the aging infrastructure (including a failing boiler plant located in the basement) of the Old Capitol Building in Olympia, Washington.

The existing boiler plant was comprised of two standard efficiency HW boilers operating a measured combustion efficiency of 76%. These boilers, and their respective pumping systems, were very tightly located in the basement mechanical space of this historic, 4 story facility constructed in 1892. The cramped conditions made routine system maintenance an ongoing headache for the maintenance staff.

Following UMC’s and the DES’s initial analysis, design and constructability assessment, the decision was made to replace the boilers with re-designed, high efficiency condensing boiler plant; including new variable flow pumping system and associated controls
Additional upgrades included incorporated at the facility include:
- VAV upgrades to resolve comfort issues
- New controls (DDC) upgrades; including Energy Based Re‐Commissioning
- Water conservation measures

UMC engineers completed the energy audit and designed a much improved, efficient heating system...The new system was fully up and running...on schedule and below budget, and without inconveniencing the building occupants.
J. Hayes Department of Enterprise Services

> 0.6 kW/Ton%+

Improved overall system efficiency


Occupant comfort improvements


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