ARIZONA SUPREME COURT

Arizona Supreme Court

Owner: State of Arizona
Mechanical Engineer: LSW Engineers
General Contractor: SD Crane Builders
Mechanical Contractor: Tolin Mechanical
Manufacturer(s): Nortek Air Solutions – Temtrol ITF Air Handling Units

Project Overview

The State of Arizona undertook a critical HVAC infrastructure upgrade at the Arizona Supreme Court, replacing aging equipment that had been in service since the 1980s. Designed by LSW Engineers and installed by Tolin Mechanical, the project modernized air handling systems throughout Justice Hall and the Supreme Court justices’ offices to enhance comfort, reliability, and operational efficiency.

Scope of Work

The project was completed in two phases to minimize disruption to daily court operations.

Phase One: Replaced rooftop Pace units 3 and 4 with Temtrol ITF outdoor units.
Phase Two: Replaced indoor Pace units 1 and 2 in the basement with Temtrol ITF sectional units.

Scheduling around court breaks was essential, as the building could not be taken fully offline.

Design & Installation Challenges

The retrofit required precise coordination and on-site adaptation:

Rooftop Installation: The existing roof curb was discovered to be concrete after the old units were removed. Western Vents fabricated new steel cross members at the last minute to accommodate the new units. Installation was completed over a weekend, requiring street closures and crane lifts to safely position the units.
Basement Installation: Units were shipped in 42-inch sections to fit within the service elevator and navigate through the tight mechanical spaces of the lower level and central plant.
Noise Control: Because the rooftop units were positioned above the justices’ offices, integrated sound traps were included to ensure quiet operation.

Equipment Highlights

The Temtrol ITF units from Nortek Air Solutions were selected for their customization flexibility and ability to fit the project’s complex retrofit conditions. Key features included:

Sectional construction for basement transport and assembly.
Custom openings to align with existing ductwork.
Dual-entrance economizer design.
Adaptation to existing concrete roof curbs.
Electrical panel integration inside the unit.

Why Nortek Air Solutions

Temtrol units from Nortek Air Solutions offered the flexibility needed for this retrofit—customized sections, adaptable configurations, and dependable lead times. The coordinated effort among LSW Engineers, Tolin Mechanical, and Varitec helped ensure efficient installation and reliable long-term performance.