Public Works Agency
www.santa-ana.gov/pw
Item # 26
City of Santa Ana
20 Civic Center Plaza, Santa Ana, CA 92701
Staff Report
August 4, 2026
TOPIC: Award Aggregate Agreements for Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs
AGENDA TITLE
Award Aggregate Agreements with ACCO Engineered Systems, Inc., ENFRA MCC, LLC, and Mesa Energy Systems, Inc. for Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs (General & Non-General Fund)
RECOMMENDED ACTION
Authorize the City Manager to execute aggregate agreements with ACCO Engineered Systems, Inc., ENFRA MCC, LLC, and Mesa Energy Systems, Inc. to provide heating, ventilation, and air conditioning service, maintenance, and repairs for an estimated total amount of $376,583 for an initial one-year term beginning August 4, 2026, and expiring August 3, 2027, with provisions for four, one-year extensions for a total aggregate amount not to exceed $1,882,915 (Core Agreement No. A-2026-XXX).
GOVERNMENT CODE §84308 APPLIES: No
DISCUSSION
The Public Works Agency Municipal Services Division (PWA) is responsible for maintaining and ensuring the operational reliability of heating, ventilation, and air conditioning (HVAC) systems throughout City facilities through a combination of in- house staff and contracted services. These systems support the operation of City facilities, including Santa Ana City Hall, Ross Annex, the Main Library, Newhope Library, Delhi Library, Police Administration Building, Jail, Corporate Yard, Santa Ana Zoo, Santa Ana Regional Transportation Center, community centers, and water resource facilities. HVAC equipment maintained under these agreements includes air handlers, chillers, chilled and hot water pumps, boilers, exhaust fans, cooling towers, air conditioning units, and large walk-in freezers and refrigerators.
To effectively maintain the diverse portfolio of HVAC systems, the City combines the capabilities of in-house maintenance staff with specialized HVAC contractors. City staff perform preventative maintenance, troubleshooting, and minor repairs, while contracted services provide specialized expertise, manufacturer-certified technicians, emergency response, and support for complex equipment such as chillers, boilers, cooling towers,
Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs August 4, 2026
5 9
2 3
and building automation systems. This approach maximizes operational efficiency, provides the flexibility to address specialized maintenance needs, improves emergency response capabilities, and helps ensure the continuous operation of critical public facilities and services.
Request for Proposals (RFP) No. 26-021A was advertised on April 30, 2026 on the City’s online bid management and publication system, PlanetBids. A summary of vendor participation and results is as follows:
377 Vendors notified
5 Santa Ana vendors notified
38 Vendors downloaded the bid packet
3 Bids received
0 Bids received from Santa Ana vendors
Proposals were opened on June 2, 2026, and evaluated. Three proposals were submitted by the RFP deadline and were determined to be responsive to the specifications and met the City’s requirements. An evaluation committee reviewed and rated the proposals according to the criteria listed in the RFP. Based on criteria outlined in the RFP, the following summarizes the top responding firms:
Firm City Ranking
ACCO Engineered Systems, Inc. Pasadena, CA 1
Mesa Energy Systems, Inc. Irvine, CA 2
ENFRA MCC, LLC Pasadena, CA 3
Staff recommends awarding aggregate agreements to all three firms. ACCO Engineered Systems, Inc. has more than 90 years of industry experience and has provided HVAC services to the City since 2008. Although this will be the City’s first contract with ENFRA MCC, LLC and Mesa Energy Systems, Inc., both firms bring decades of experience serving public agencies, including the City of Rancho Cucamonga, County of Ventura, and the City of Arcadia.
Given the size and complexity of the City’s HVAC infrastructure, staff recommends awarding aggregate agreements to ACCO Engineered Systems, Inc. (Exhibit 1), ENFRA MCC, LLC (Exhibit 2), and Mesa Energy Systems (Exhibit 3). Approval will ensure timely preventative maintenance, faster response times, and the flexibility necessary to address emergencies.
ENVIRONMENTAL IMPACT
There is no environmental impact associated with this action.
Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs August 4, 2026
5 9
2 3
FISCAL IMPACT
Funds are budgeted and available in the following accounts for Fiscal Year 2026-27.
Subsequent fiscal year funding for renewal options, if exercised, will be included in the proposed budgets for City Council consideration. The following is an estimate of expenditures by fiscal year. Actual expenditures may vary by fiscal year based on operational needs, provided total expenditures do not exceed the total aggregate contract amount authorized by City Council.
Fiscal
Year
Accounting
Unit –
Account No.
(Project No.)
Fund
Description
Accounting Unit,
Account Description Amount
CONTRACT (ONE-YEAR TERM)
01117609-
62320 General Fund
Building Maintenance,
Maintenance & Repair
Buildings & Ground
$119,167
06717650-
62320
Regional
Transportation
Center
PWA – SARTC
Operations,
Maintenance & Repair
Buildings & Ground
$13,750
01117651-
62320 General Fund
Park Maintenance,
Maintenance & Repair
Buildings & Ground
$27,500
01114403-
62300 General Fund
Building & Facility,
Contract Services-
Professional
$52,500
01117609-
62300
(27-6027)
General Fund
Building Maintenance,
Contract Services-
Professional
$52,500
06017640-
62300 Water
Water Utility Water
Production & Supply,
[FH1] Contract Services
– Professional
$27,500
01113220-
62300 General Fund
PRCSA – Zoo,
Contract Services -
Professional
$17,687
2026-27
(Aug 4 -
Jun 30)
01118811-
62300
(19-7753)
General Fund
Homeless Services –
Service Enhancement,
Contract Services-
Professional
$6,000
Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs August 4, 2026
5 9
2 3
01117609-
62320 General Fund
Building Maintenance,
Maintenance & Repair
Buildings & Ground
$10,833
06717650-
62320
Regional
Transportation
Center
PWA – SARTC
Operations,
Maintenance & Repair
Buildings & Ground
$1,250
01117651-
62320 General Fund
Park Maintenance,
Maintenance & Repair
Buildings & Ground
$2,500
01114403-
62300 General Fund
Building & Facility,
Contract Services-
Professional
$17,500
01117609-
62300
(27-6027)
General Fund
Building Maintenance,
Contract Services-
Professional
$17,500
06017640-
62300 Water
Water Utility Water
Production & Supply,
Contract Services –
Professional
$2,500
01113220-
62300 General Fund PRCSA – Zoo, Contract
Services – Professional $5,896
2027-28
(Jul 1 –
Aug 3)
01118811-
62300
(19-7753)
General Fund
Homeless Services –
Service Enhancement,
Contract Services-
Professional
$2,000
CONTRACT (ONE-YEAR) TOTAL $376,583
OPTIONAL FOUR ONE-YEAR EXTENSIONS
01117609-
62320 General Fund
Building Maintenance,
Maintenance & Repair
Buildings & Ground
$119,167
06717650-
62320
Regional
Transportation
Center
PWA – SARTC
Operations,
Maintenance & Repair
Buildings & Ground
$13,750
2027-28
(Aug 4 -
Jun 30)
01117651-
62320 General Fund
Park Maintenance,
Maintenance & Repair
Buildings & Ground
$27,500
Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs August 4, 2026
5 9
2 3
01114403-
62300 General Fund
Building & Facility,
Contract Services-
Professional
$52,500
01117609-
62300
(27-6027)
General Fund
Building Maintenance,
Contract Services-
Professional
$52,500
06017640-
62300 Water
Water Utility Water
Production & Supply,
Contract Services –
Professional
$27,500
01113220-
62300 General Fund PRCSA – Zoo, Contract
Services – Professional $17,687
01118811-
62300
(19-7753)
General Fund
Homeless Services –
Service Enhancement,
Contract Services-
Professional
$6,000
01117609-
62320 General Fund
Building Maintenance,
Maintenance & Repair
Buildings & Ground
$130,000
06717650-
62320
Regional
Transportation
Center
PWA – SARTC
Operations,
Maintenance & Repair
Buildings & Ground
$15,000
01117651-
62320 General Fund
Park Maintenance,
Maintenance & Repair
Buildings & Ground
$30,000
01114403-
62300 General Fund
Building & Facility,
Contract Services-
Professional
$70,000
01117609-
62300
(27-6027)
General Fund
Building Maintenance,
Contract Services-
Professional
$70,000
06017640-
62300 Water
Water Utility Water
Production & Supply,
Contract Services –
Professional
$30,000
2028-29
01113220-
62300 General Fund PRCSA – Zoo, Contract
Services – Professional $23,583
Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs August 4, 2026
5 9
2 3
01118811-
62300
(19-7753)
General Fund
Homeless Services –
Service Enhancement,
Contract Services-
Professional
$8,000
01117609-
62320 General Fund
Building Maintenance,
Maintenance & Repair
Buildings & Ground
$130,000
06717650-
62320
Regional
Transportation
Center
PWA – SARTC
Operations,
Maintenance & Repair
Buildings & Ground
$15,000
01117651-
62320 General Fund
Park Maintenance,
Maintenance & Repair
Buildings & Ground
$30,000
01114403-
62300 General Fund
Building & Facility,
Contract Services-
Professional
$70,000
01117609-
62300
(27-6027)
General Fund
Building Maintenance,
Contract Services-
Professional
$70,000
06017640-
62300 Water
Water Utility Water
Production & Supply,
Contract Services –
Professional
$30,000
01113220-
62300 General Fund PRCSA – Zoo, Contract
Services – Professional $23,583
2029-30
01118811-
62300
(19-7753)
General Fund
Homeless Services –
Service Enhancement,
Contract Services-
Professional
$8,000
01117609-
62320 General Fund
Building Maintenance,
Maintenance & Repair
Buildings & Ground
$130,000
06717650-
62320
Regional
Transportation
Center
PWA – SARTC
Operations,
Maintenance & Repair
Buildings & Ground
$15,0002030-31
01117651-
62320 General Fund
Park Maintenance,
Maintenance & Repair
Buildings & Ground
$30,000
Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs August 4, 2026
5 9
2 3
01114403-
62300 General Fund
Building & Facility,
Contract Services-
Professional
$70,000
01117609-
62300
(27-6027)
General Fund
Building Maintenance,
Contract Services-
Professional
$70,000
06017640-
62300 Water
Water Utility Water
Production & Supply,
Contract Services –
Professional
$30,000
01113220-
62300 General Fund PRCSA – Zoo, Contract
Services – Professional $23,583
01118811-
62300
(19-7753)
General Fund
Homeless Services –
Service Enhancement,
Contract Services-
Professional
$8,000
01117609-
62320 General Fund
Building Maintenance,
Maintenance & Repair
Buildings & Ground
$10,833
06717650-
62320
Regional
Transportation
Center
PWA – SARTC
Operations,
Maintenance & Repair
Buildings & Ground
$1,250
01117651-
62320 General Fund
Park Maintenance,
Maintenance & Repair
Buildings & Ground
$2,500
01114403-
62300 General Fund
Building & Facility,
Contract Services-
Professional
$17,500
01117609-
62300
(27-6027)
General Fund
Building Maintenance,
Contract Services-
Professional
$17,500
06017640-
62300 Water
Water Utility Water
Production & Supply,
Contract Services –
Professional
$2,500
2031-32
(Jul 1 –
Aug 3)
01113220-
62300 General Fund PRCSA – Zoo, Contract
Services – Professional $5,896
Heating, Ventilation, and Air Conditioning Service, Maintenance, and Repairs August 4, 2026
5 9
2 3
01118811-62300
(19-7753) General Fund
Homeless Services – Service
Enhancement, Contract
Services-Professional
$2,000
OPTIONAL FOUR ONE-YEAR EXTENSION TOTAL $1,506,332
TOTAL (FIVE-YEAR CONTRACT): $1,882,915
EXHIBIT(S)
1. Agreement with ACCO Engineered Systems, Inc.
2. Agreement with ENFRA MCC, LLC
3. Agreement with Mesa Energy Systems, Inc.
Submitted By: Rodolfo Rosas, P.E., Acting Executive Director of Public Works Agency Approved By: Alvaro Nuñez, City Manager