Atch 1. HVAC BPA Statement of Work_ 5Dec25.pdf

STATEMENT OF WORK

HEATING/VENTILATION/AIR CONDITIONING (HVAC)

BLANKET PURCHASE AGREEMENT (BPA)

JOINT BASE SAN ANTONIO, TEXAS

05 December 2025

1. DESCRIPTION OF SERVICES. The contractor shall provide all materials, tools, equipment, personnel, supervision, vehicles, and other items necessary to assess/repair

Heating/Ventilation/Air Conditioning (HVAC) systems as defined in this Statement of Work

(SOW) at Joint Base San Antonio (JBSA) Lackland, Randolph, Fort Sam Houston, and Camp

Bullis. The contractor shall perform to the standards of this Blanket Purchase Agreement (BPA) and shall be bonded and licensed in the state of Texas. Anything identified during the contractor’s assessment and/or repair that is outside the assigned task will be reported back to the

Government for action.

1.1. AIR HANDLER UNITS (AHU). The contractor shall assess and repair all AHUs in accordance with the steps listed in Appendix 1. Note: no filter changes will be performed by the contractor at Fort Sam Houston.

1.2. FAN COIL UNITS. The contractor shall assess and repair all Fan Coil Units in accordance with the steps listed in Appendix 2. Note: no filter changes will be performed by the contractor at Fort Sam Houston.

1.3. WATER SOURCE HEAT PUMP (WSHP)/SPLIT SYSTEM. The contractor shall assess and repair all WSHP/Split System units in accordance with the steps listed in Appendix 3. Note:

no filter changes will be performed by the contractor at Fort Sam Houston.

1.4 CHILLER LEAK ASSESSMENT. The contractor shall perform an assessment on chillers

(operational and non-operational) to investigate any possible leaks in accordance with the steps listed in Appendix 4. Within 3 days of completion of assessment, the contractor shall provide a quote for chiller repair. The quote shall include all parts required, cost for parts, labor hours and hourly rate.

1.5 VARIABLE REFRIGERANT FLOW (VRF) SYSTEMS ASSESSMENT. The contractor shall assess various brand VRF Systems in accordance with the steps listed in Appendix 6. Within

3 days of completion of assessment, the contractor shall provide a Comprehensive Assessment

Report. The Comprehensive Assessment Report shall include examination steps, identified issues and all parts that require repair.

1.6 CONTRACTOR PERSONNEL. Contractor must employ a full time Texas license holder who holds an appropriate license assigned to that company for air conditioner repair/maintenance.

Contractor’s technician(s) shall also have current Environmental Protection Agency, Section 608

Technician Certification for maintaining, servicing, repairing, and disposing of equipment that could release ozone depleting refrigerants into the atmosphere. Contractor shall follow the most current

National Electrical Codes and the ASHRAE Fundamentals Handbook. The contractor shall provide a contract manager who shall have full authority to act for the contractor on all matters relating to daily operation of this BPA. The name of this person shall be designated in writing to the Contracting

Officer (CO) no later than five business days after the effective date of the BPA. During normal duty hours, the contract manager shall be available within two hours to meet with Civil Engineering personnel; this meeting may be via telephone contact.

1.7 QUALITY CONTROL. The contractor shall ensure that all work performed under this

Blanket Purchase Agreement (BPA) meets high standards of quality. For every service call, whether for an assessment or a repair, the contractor must provide effective and long-lasting solutions. In the case of repair service calls, the contractor is responsible for completing repairs that resolve the issue without recurring problems, unless a new issue arises. For assessment service calls, the contractor must accurately diagnose the system’s condition and provide a clear report detailing any necessary repairs or maintenance. The contractor shall offer a warranty for all repairs performed, ensuring that any defects discovered after the service call are corrected at no extra charge if reported within the warranty period. If a defect is found during or after a service call, the contractor must promptly address it at no additional cost, ensuring that the work is completed correctly the first time.

1.7.1 INSPECTION AND ACCEPTANCE. The office having responsibility for inspection and acceptance of services is the 502d Civil Engineering Squadron (502 CES).

1.8 NORMAL HOURS OF OPERATIONS. The contractor shall perform the services required under this BPA from 7:30 a.m. to 4:15 p.m., Monday through Friday. The contractor is not required to provide services on Federal Holidays.

1.9 SAFETY. The contractor shall comply with all applicable federal, state, and local safety requirements, including the Air Force Occupational Safety and Health (AFOSH) Standards.

2. GOVERNMENT FURNISHED SERVICE. The Government will provide police and fire response. Contractor shall dial 911 for Emergency Force Protection or Fire Response. In the event of a medical emergency, base ambulance service for transporting an injured employee to a local hospital is available on a cost reimbursement basis. Contractor may be required to prepare necessary documentation and reimburse the government for the cost of emergency medical treatment.

A government escort shall be provided to the contractor to enter controlled areas; contractor may experience a delay until escort is available. The government will furnish electricity, water, and sewage services as necessary for accomplishment of work in accordance with this BPA.

3. CONTRACTOR FURNISHED PARTS/MATERIAL. The contractor shall furnish all parts and materials necessary to perform repairs/replacement of defective HVAC systems. The contractor shall provide new or reconditioned parts that are equal to, or exceed, the original manufacturer’s parts. The contractor shall be reimbursed for parts/materials in accordance with the Contracting Officer approved price list. Parts replaced remain the property of the Government.

4. PLACEMENT OF CALL/JOB ORDERS. Performance of services shall be accomplished when CE places a call against a BPA. Each service call will be assigned a number and issued to the contractor by authorized individual(s) designated by the CO. Work assigned to the contractor shall consist of individual items: the exact number, quantities and dollar amount of each item involved. Each call order service requested (Appendix 6) will vary according to specific requirements of each job.

5. GENERAL.

5.1. PROTECTION OF GOVERNMENT PROPERTY. The contractor shall take all necessary precautions to protect government property, personnel, and equipment.

5.2. DAMAGED PROPERTY. The contractor shall make all necessary repairs to government property if damaged during the performance of service calls. Repairs to damaged government property or replacement of damaged components shall be made at no additional cost to the government.

5.3. INSTALLATION ACCESS REQUIREMENTS. The Contractor shall obtain personnel identification badges as required for entry to the installation. The Government will provide all forms and procedures to the contractor to obtain personnel identification and vehicle passes prior to BPA start. The contractor shall provide the Government designated point of contact (POC) with a current list of employees needing access within 3 working days after receiving award or

Notice of Award. The list shall include employee’s name, date of birth, state driver’s license/state

ID number and state of issue. Within 10 business days after the Government POC submits the list to the JBSA Security Office(s), the Contractor will be notified that installation access passes are available for those employees clearing the criminal history check. The duration of any pass issued will not exceed one year or the duration of the BPA, whichever is shorter. Contractor personnel and property shall be subject to search and seizure upon entering the confines of JBSA installations, while on JBSA installations, and upon leaving the confines of JBSA installations.

Submission of late, inaccurate, or incomplete information could delay issuance of access credentials. During performance of the BPA, the contractor shall be responsible for obtaining required identification for newly assigned personnel and for prompt return of credentials to the

Government designated POC for any employee who no longer requires access to the work site.

Upon completion or termination of the BPA, or expiration of the identification passes; the prime contractor shall ensure that all base identification passes issued to employees and subcontractor employees are returned to the office where they were issued.

5.4. CLEAN UP. The contractor shall keep work area(s) free from accumulation of waste materials and rubbish. The contractor shall leave the work area and premises in a neat clean condition upon completion of work each day and at the completion of each call order. All waste generated during the repair process shall be disposed of by the contractor at a disposal site located outside the installation.

6. Appendices.

Appendix 1 – Air Handler Unit

Appendix 2 – Fan Coil Unit

Appendix 3 – Water Source Heat Pump/Split System

Appendix 4 - Chiller Leak Assessment

Appendix 5 – Variable Refrigerant Flow (VRF) Systems Assessment

Appendix 6 – HVAC Service Request

APPENDIX 1

AIR HANDLER UNIT

1. Verify disconnect is in the “on” position

2. Check thermostat to see that it is set for heating or cooling service

3. Check fuses/circuit breakers serving the equipment, replace if blown or system will not reset

4. Cooling systems: check for a condensation drip tray overflow switch that may have turned off the system

5. Heating system: check actuator or heating valve for proper operation, replace if required

6. If all controls are calling for system operations but the blower is not running, check electrical motor to ensure it is not burned out and inspect blower wheel for proper operation

7. Replace blower motor and/or blower wheel if needed

8. Check AHU filters to ensure they are clean; replace with like filters if needed

APPENDIX 2

FAN COIL UNIT

1. Verify disconnect is in the “open” position

2. Verify thermostat is not in “unoccupied” mode

3. Check thermostat for proper operation

4. Clean condensation pan and clear drain line

5. Repair or replace thermostat

6. Check fan relay to see if it is energizing/de-energizing properly

7. Check if 24 volt transformer is supplying proper voltage, replace transformer if necessary

8. Ensure wire connections are properly secured

9. Check if fan motor is burned out; replace if needed

10. Check to ensure chill water/heating control valve is operating properly

11. Replace chill/hot water valve if needed

12. Replace air filters with new like air filters

13. Check to ensure chill water/heating coil is clean; clean using approved evaporator coil cleaner

APPENDIX 3

WATER SOURCE HEAT PUMP/SPLIT SYSTEM

1. Verify disconnect is in the “open” position

2. Verify thermostat is not in “unoccupied” mode

3. Clean condensation pan and clear drain line

4. Check thermostat for proper operation or aqua-stat if applicable

5. Replace thermostat if needed

6. Check fan relay to see if it is energizing/de-energizing properly

7. Check if 24 volt transformer is supplying proper voltage, replace transformer if necessary

8. Ensure wire connections are properly secured

9. Check if fan motor is burned out replace if needed

10. Check low pressure switch to ensure it is working properly and replace if required

11. Check high pressure switch to ensure it is working properly and replace if required

12. Check for low refrigerant; add refrigerant to proper charge

13. If low pressure switch is tripped, check the following:

a. Heating

1. Plugged heat exchanger on load side

2. Low water flow source side

3. Check to ensure condenser water is not too cold on the source side

4. Check for low refrigerant

b. Cooling

1. Plugged heat exchanger on the load side, replace heat exchanger if required

2. Low water flow on the load side

3. Check to ensure water is not too cold on the load side

4. Check for low refrigerant; charge to proper charge if needed

5. Clean condensation pan and clear drain line

14. If high pressure switch tripped, check the following:

a. Heating

1. Plugged heat exchanger on the load side

2. Low water flow on the load side

3. Check to ensure water is not too warm on the load side

b. Cooling

1. Plugged heat exchanger on the source side

2. Low water flow on the source side

3. Condenser water too warm on the source side

4. Clean condensation pan and clear drain line

5. Check condensing fan motor and blade, replace if needed

15. Check the compressor overload switch and replace if required

16. Check to ensure the compressor is not grounded or internal valves are bad; replace compressor if needed

17. Check system to ensure no restrictions in the condenser water flow; repair valve if needed

18. Check for proper refrigerant charge and expansion valve operation

19. Check reversing valve for proper operation if unit will not heat; replace valve if not functioning

20. Verify air and water flow rates are at proper levels before servicing refrigerant circuits

21. Check evaporator coil and replace if required

22. Check blower motor and replace if required

23. Check TXV and replace if required

24. Check Premier Link board and replace if required

25. Check CXM board and replace if required

26. Check contactor 24 volt coil and replace if required

APPENDIX 4

CHILLER LEAK ASSESSMENT

Procedure for Non-operational Chiller

1. Pressurize chiller with nitrogen and trace gas (contractor provided)

2. Use electronic leak detector

3. Pin point leaking tubes

4. Mark leaking tubes

5. Check the remaining chiller for leaks

6. Check flanges

7. Check shaft seal

8. Remove the nitrogen and reset system/chiller and leave in condition it was found

9. Submit quote in accordance with SOW paragraph 1.4

Procedure for Operational Chiller

1. Use electronic leak detector

2. Check tubes for leaks (Note: this is not an Eddy Current Test)

3. Pin point leaking tubes

4. Mark leaking tubes

5. Check the remaining chiller for leaks

6. Check flanges

7. Check shaft seal

8. Reset system/chiller to normal operating condition

9. Submit quote in accordance with SOW paragraph 1.4

APPENDIX 5

VARIOUS BRAND VARIABLE REFRIGERANT FLOW (VRF) SYSTEMS ASSESSMENT

Initial Assessment:

Document all VRF units, their locations, and their specifications.

Record model numbers, serial numbers, and installation dates.

Conduct a thorough inspection to identify issues.

Use diagnostic tools and software specific to each brand.

Operational Status Check:

Verify the current operational status of each unit.

Note any visible signs of wear, damage, or malfunction.

Fault Analysis:

Analyze error codes and system logs.

Perform performance tests to pinpoint problems.

Performance Analysis: Use appropriate software to diagnose system.

System Performance Testing:

Measure key performance indicators such as temperature differentials, pressure readings, and airflow rates.

Use diagnostic tools to assess system efficiency.

Compressor and Motor Inspection:

Measure compressor amperage and compare it to the manufacturer's specifications.

Inspect and test motor windings, bearings, and capacitors.

Verify the proper start-up and shut-down sequences.

Check for any unusual noises or vibrations during operation.

Diagnose compressor issues such as short cycling, excessive noise, and lack of cooling.

Condition Monitoring:

Inspect for signs of wear, such as oil leakage or discoloration.

Evaluate the condition of motor windings and insulation.

Temperature Check:

Measure operating temperatures of compressors and motors.

Ensure temperatures are within acceptable ranges to prevent overheating.

Efficiency Evaluation:

Perform efficiency tests to assess the performance of compressors and motors.

Identify any loss of efficiency that might indicate potential issues.

Electrical System Inspection:

Control Board:

Diagnose control boards, inverter boards, and microprocessors.

Wiring and Connections:

Inspect all electrical connections for tightness and signs of corrosion.

Verify the integrity of wiring insulation.

Control Panels:

Check for proper operation of relays, contactors, and circuit breakers.

Ensure that control panels are free of dust and debris.

Verify the proper function of control boards and other electronic components.

Sensors and Thermostats:

Test and calibrate sensors, thermistor, transducers, and thermostats to ensure accurate readings.

Check for proper placement and secure mounting of sensors, thermistor, transducers, and thermostats.

Electrical Load Testing:

Conduct load tests to ensure electrical components can handle operational demands.

Identify any electrical imbalances or anomalies.

Refrigerant System Check:

Leak Detection:

Use electronic leak detectors and soap bubble tests to identify refrigerant leaks.

Inspect refrigerant lines, connections, and valves for signs of leakage.

Refrigerant Levels:

Measure refrigerant charge and ensure it matches the system specifications.

Recover refrigerant as needed, following environmental regulations.

Pressure Testing:

Conduct high and low side pressure tests to ensure the system is operating within the correct pressure ranges.

Identify any deviations that could indicate system issues.

Refrigerant Quality:

Test refrigerant for purity and contamination.

Replace contaminated refrigerant and flush the system if necessary to include suction filter driers or core driers.

Coil Condition:

Inspect evaporator and condenser coils for cleanliness and damage.

Clean coils to ensure efficient heat transfer.

Fin Integrity:

Check the condition of coil fins and straighten any bent fins.

Assess for any signs of corrosion or blockage.

Fan and Blower Evaluation:

Fan Operation:

Inspect fans for proper operation and balance.

Check for any unusual noises or vibrations during operation.

Blower Performance:

Measure airflow rates and compare to system specifications.

Ensure that blower motors and bearings are in good condition.

Blade and Housing Inspection:

Inspect fan blades and housings for cleanliness

Reporting and Documentation:

Comprehensive Assessment Report:

Provide a detailed report summarizing the findings of the assessment.

Include photographs, data logs, and diagnostic results.

Recommendations:

Offer actionable recommendations for improvements, repairs, or replacements.

Prioritize recommendations based on urgency and potential impact on system performance.

Maintenance Plan:

Suggest a tailored maintenance plan based on the assessment findings.

Include a schedule for regular maintenance visits and critical checkpoints.

Parts and Materials:

Identify and list all necessary replacement parts based on the assessment.

APPENDIX 6

HEATING/VENTILATION/AIR CONDITIONING (HVAC)

SERVICE REQUEST

CONTRACTOR:

Call No.: Date Issued:

REQUIREMENT:

Work start date:

Estimated completion date: Actual date completed:

ITEM

NO.

SERVICE

ESTIMATED

QUANTITY UNIT

UNIT

PRICE

TOTAL

AMOUNT

TOTAL LINE ITEM AMOUNT $

Call issued by:

Signature of Contract Officer Representative Date issued

I verify HVAC repair service was accomplished IAW BPA and SOW.

Signature of CE Personnel Date of final inspection