Unofficial Notice of Invitation to Bid (NIB)

Anaheim Union High School District is seeking bids from qualified and interested contractors for the following project titled, Anaheim High HVAC Condenser and Evaporator Coil Replacement, identified under Solicitation ID: 1-2025-0122. Work is to be performed near 811 W Lincoln Ave, Anaheim, CA 92805, USA in Orange County.

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General Project Description

The project involves the replacement of existing evaporator and condenser coils on three commercial rooftop HVAC units at Anaheim High School. The scope includes all necessary labor, materials, equipment, and services for the removal of existing coils and the installation of new ones, ensuring proper operation in accordance with manufacturer specifications and applicable codes. Key tasks encompass site inspection, verification of unit details, refrigerant recovery, coil removal and installation for both evaporator and condenser units, replacement of associated components like thermal expansion valves and liquid line driers, pressure testing, refrigerant system services, startup, commissioning, and final operational adjustments. Crane or rigging services are to be included if needed. Legal disposal of old coils and materials, jobsite cleanup, and adherence to OSHA safety requirements are also part of the scope.

General Bid Items

Quantity: - Unit: - Work Item: Site inspection and verification of unit model, serial number, refrigerant type, and coil specifications.
Quantity: - Unit: - Work Item: Confirmation of replacement coil compatibility with existing RTU.
Quantity: - Unit: - Work Item: Coordination of work schedule with building management.
Quantity: - Unit: - Work Item: Implementation of jobsite safety procedures in accordance with OSHA requirements.
Quantity: - Unit: - Work Item: Recovery of existing refrigerant from both circuits, compliance with EPA regulations.
Quantity: - Unit: - Work Item: Disconnection of electrical power and securing unit for service (LOTO).
Quantity: - Unit: - Work Item: Removal of access panels and existing evaporator coil.
Quantity: - Unit: - Work Item: Modification or adjustment of piping, brackets, and supports as required for new coil installation.
Quantity: - Unit: - Work Item: Brazing of new evaporator coil.
Quantity: - Unit: - Work Item: Installation of new evaporator coil, including proper mounting and alignment.
Quantity: - Unit: - Work Item: Installation of new thermal expansion valve (TXV) or metering device, if required.
Quantity: - Unit: - Work Item: New drain pan connections and insulation as needed.
Quantity: - Unit: - Work Item: Replacement of both circuits' liquid line driers.
Quantity: - Unit: - Work Item: Removal of existing condenser coil and associated components.
Quantity: - Unit: - Work Item: Installation of new condenser coil, ensuring proper airflow and structural support.
Quantity: - Unit: - Work Item: Brazing of new condenser coil.
Quantity: - Unit: - Work Item: Replacement of damaged or deteriorated coil guards, fasteners, or supports.
Quantity: - Unit: - Work Item: Pressure test evaporator and condenser coils and refrigerant piping.
Quantity: - Unit: - Work Item: Verification of condenser fan alignment and clearance.
Quantity: - Unit: - Work Item: Pressure testing coils and connections with dry nitrogen.
Quantity: - Unit: - Work Item: Evacuation of system to 500 microns to ensure no leaks in both circuits.
Quantity: - Unit: - Work Item: Recharge system with specified refrigerant to proper operating levels.
Quantity: - Unit: - Work Item: Perform system leak check.
Quantity: - Unit: - Work Item: Adjust refrigerant charge for optimal superheat and subcooling.
Quantity: - Unit: - Work Item: Restore electrical power and controls by removing LOTO.
Quantity: - Unit: - Work Item: Start unit and verify proper operation.
Quantity: - Unit: - Work Item: Measure and record supply and return air temperatures.
Quantity: - Unit: - Work Item: Measure and record refrigerant pressures.
Quantity: - Unit: - Work Item: Measure and record superheat and subcooling.
Quantity: - Unit: - Work Item: Measure and record voltage and amperage readings.
Quantity: - Unit: - Work Item: Confirm proper airflow and condensate drainage.
Quantity: - Unit: - Work Item: Make final operational adjustments.
Quantity: - Unit: - Work Item: Removal and legal disposal of old coils and materials.
Quantity: - Unit: - Work Item: Clean work area and restore rooftop unit panels and insulation.
Quantity: - Unit: - Work Item: Leave jobsite in safe, clean condition.
Quantity: - Unit: - Work Item: Provide manufacturer warranty on replacement coils.
Quantity: - Unit: - Work Item: Provide labor warranty for a specified period.

NAICS Classification

NAICS 238220 – Plumbing, Heating, and Air-Conditioning Contractors, NAICS 562112 – Hazardous Waste Collection

Records and Due Date

This bid opportunity was entered into BidAmerica on February 20, 2026, and was last updated on February 20, 2026. All bids and/or proposals are due on March 4, 2026.

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Legal Disclaimer

All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by Anaheim Union High School District. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from Anaheim Union High School District prior to bidding.