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AGENDA RECOMMENDATION |
Consent Calendar 6.G.
City Council Regular Meeting
- Meeting Date:
- 07/14/2025
Agenda Item:
Resolution accepting feasibility report and ordering project for Capital Improvement Project 11144; Intergovernmental Center Rooftop Unit Replacement.
Recommendation/Action(s):
Adoption of the attached resolution.
Summary:
The existing rooftop units (RTU), RTU-1 and RTU-2, serving the Intergovernmental Center, were installed in 1997 and are approaching 30 years of operation. According to the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE), the typical life expectancy of a rooftop unit is 15 years. There have been numerous repairs on the units over the last decade, including compressor replacements in RTU 2 in 2019 and control board replacement for both units in 2013. Given the age of the unit and the technological advancements over the last 30 years, replacement is warranted at this time.
Suggested improvements include the replacement of the existing rooftop units with hybrid units that feature heat pump technology. A consultant engineering firm was retained for the design work and to analyze the various options, including sustainable features that could be incorporated into the new units. During the shoulder seasons between large heating and cooling, the heat pumps will be able to extract heat from the outside air to heat the space without the use of natural gas. Due to the cold temperatures in the winter, the units will have natural gas as an alternative heat source for when outside air temperatures are below 30 degrees. The estimated cost of the necessary improvements is approximately $600,600. The recommended improvements to the Intergovernmental Center are being proposed for the spring of 2026 unless the units can be sourced earlier.
The estimated costs and funding sources for the project are as follows:
Staff recommends the Council accept the project feasibility report, order city staff to prepare final plans and specifications, and instruct the City Manager to advertise for bids in accordance with the requirement of law.
Suggested improvements include the replacement of the existing rooftop units with hybrid units that feature heat pump technology. A consultant engineering firm was retained for the design work and to analyze the various options, including sustainable features that could be incorporated into the new units. During the shoulder seasons between large heating and cooling, the heat pumps will be able to extract heat from the outside air to heat the space without the use of natural gas. Due to the cold temperatures in the winter, the units will have natural gas as an alternative heat source for when outside air temperatures are below 30 degrees. The estimated cost of the necessary improvements is approximately $600,600. The recommended improvements to the Intergovernmental Center are being proposed for the spring of 2026 unless the units can be sourced earlier.
The estimated costs and funding sources for the project are as follows:
| ITEM | ESTIMATED COST |
| RTU-1 (HP) | $136,000 |
| RTU-2 (HP) | $210,000 |
| Crane | $20,000 |
| Misc. Material | $20,000 |
| Controls | $30,000 |
| Labor | $100,000 |
| TOTAL CONSTRUCTION | $516,000 |
| 10% Contingency | $51,600 |
| Design Contract | $33,000 |
| TOTAL PROJECT COST | $600,600 |
| Estimated Rebate | $11,800 |
| Total Cost After Rebate | $588,800 |
| FUNDING SOURCE | AMOUNT | PERCENT |
| IGC Capital Funds | $600,600 | 100% |
| TOTAL FUNDS | $600,600 | 100% |
Staff recommends the Council accept the project feasibility report, order city staff to prepare final plans and specifications, and instruct the City Manager to advertise for bids in accordance with the requirement of law.