(916) 381-4611 Serving Northern California (see map)


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Key Personnel

One of our core values is the strong belief that our success is predicated on the quality of our employees. We are proud of our integrated design-build-service team and believe their extensive knowledge of different types of HVAC systems and design configurations and their high level of customer service make us imminently qualified to work with building owners, architects and general contractors to bring their projects in on time and on budget. Our key team members have broad experience designing, installing and servicing a wide range of projects:

Sara Jackson

Operations Manager, Service Division
sjackson@coacair.com

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  • Education
    • University of San Francisco, BS Degree - Organizational Behavior & Development
    • State of California Real Estate Salesperson License
  •  Professional Experience
    • Dispatching, quoting, providing customer support in a service environment
    • PG&E Quality Maintenance Program Administrator
    • LEAN process champion for driving operational effectiveness and efficiency
    • Contract administration and Lead Generation
    • Property Management Liaison
    • HR/Executive Assistant at CEMEX (construction materials)
  • Sara is a real estate professional and is COAC’s Customer Service and Operations Manager. Sara has years of experience in the HVAC service industry continuously streamlining and managing all aspects of the Service Division’s processes and procedures. From field operations, to service quotes, through billing and administrative details, Sara is the customer’s primary advocate and is committed to exceptional delivery of all our services.

Dorinda Frantzreb

Controller
dfrantzreb@coacair.com

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  • Education
    • California State University, Chico, Masters of Business Administration (MBA)
    • California State University, Chico, BA Business Administration and BA Music & Performance
  •  Professional Experience
    • Controller and Business Operations
    • Unit training manager in the Air Force Reserves
    • LEAN process champion for driving operational effectiveness and efficiency
    • Operations Manager for Ferguson Enterprises
  • Dorinda is a highly experienced professional Operations Manager/Controller with participation in a diversified array of projects and proven track record of achieving quality assurance, scheduling, and budgeting demands. She is a proven, detail-directed problem solver, able to provide effective and timely solutions, Passionate manager with strong leadership abilities. Ability to organize multiple projects, control project cost, and effectively schedule project tasks. Over 10 years of industry experience with strong analytical skills, organized, and highly motivated. A certified leader in operations management/methods , training, continuous improvement, and lean construction management.
Bill Schmalzel

Bill Schmalzel

LEED AP – Energy Services
bschmalzel@coacair.com

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  • Education
    • California State University Sacramento – BA Degree - Education
    • Project Management Professional, Project Management Institute – PMP
    • US Green Building Council – LEED AP
    • Certified Green Building Professional – CGBP
    • State of California Real Estate Broker’s License
    • State of California Contractors License - General B License
  • Keynote Projects
    • Commercial & Industrial Speculative and Build-to-Suit facilities – over 12,000,000 sqft – Managed development and tenant improvements in Modesto, Vacaville, Sacramento, Stockton, Tracy, and West Sacramento.
    • Home Depot Rapid Deployment Center – 658,000 sqft – Managed entitlement and construction process for this LEED Certified facility
    • ARCO I, II and ARCO Park – Development team and project management
    • California State University of Sacramento, Field Turf Project – Managed the construction process
    • Historical D.O. Mill Bank Conversion - Managed the conversion of the historical structure into the 629 J Street, Sacramento Grand Ballroom
Dave Armenta

Dave Armenta

Field Superintendent
darmenta@coacair.com

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  • Education
    • California Contractor’s License Board – License – C-20 Mechanical Contractor
    • Associated Builders & Contractors – Certificate – Foreman and Field Management Program
    • UC Davis Extension – Certificate – HVAC Design
  • Keynote Properties
    • Advanced H2O Manufacturing Facility – 230,000 sqft – New HVAC and Process Equipment systems
    • Fastenal Western Distribution Center – 141,000 sqft – New HVAC and Industrial Ventilation systems
    • Department of Consumer Affairs – 215,000 sqft – Upgrade of existing Office HVAC systems
    • Global Hawk Hanger, Beale AFB – 80,000 sqft – New HVAC and Industrial Ventilation systems
    • Flight Simulator Facility, Travis AFB – 20,000 sqft – New HVAC systems for Offices and Simulator
    • Hotel Sofitel – 220,000 sqft – Upgrade of HVAC systems for Rooms, Kitchen, and Central Plant
    • 650 Capitol Mall – 300,000 sqft – New HVAC and Central Equipment systems for Offices
    • Hengel Federal Building, Richmond – 275,000 sqft – Upgrade of HVAC and Central Plant systems

Phil Cooper

Vice President, New Construction / Estimating
pcooper@coacair.com

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  • Education
    • California Contractor’s License Board – License – C-20 Mechanical Contractor
    • UTI, Arizona – AA Degree – Heating, Air Conditioning, and Refrigeration Technology
    • UC Davis Extension – Certificate – HVAC Design
    • UC Davis Extension – Certificate – Commercial Project Management
    • FMI – Leadership Institute
  • Professional Experience
    • Phil has over twenty-three years of commercial HVAC experience both in the field and as a manager. He has worked in every aspect of our business including installation, service, design, purchasing and estimating. He has been involved in almost every installation project the company has performed over the past eighteen years including large office shell construction, tenant improvements, industrial and storage applications, school remodels and renovation projects. He has worked on over fifteen large water source heat pump installations and numerous large VAV systems. As such, he has extensive knowledge of water source and geothermal applications as well as the more traditional roof-top package systems.

Ruzwa Cooper

President
rcooper@coacair.com

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  • Education
    • UC Berkeley, BA – Economics; BA – French Literature
    • Columbia University, MBA
    • US Green Building Council – LEED AP
  • Professional Experience
    • Ruzwa is accountable for the strategic direction and the continued growth of COAC. Prior to joining the company seven years ago he was president of a multi-national software development firm, co-founded a management consulting practice and was a senior manager in the consulting division at KPMG. He specialized in strategic planning and organizational development, serving clients in industries ranging from financial institutions, healthcare, manufacturing and higher education. During his tenure at COAC the Company has grown three-fold while retaining its focus on assisting property owners and tenants manage the full life-cycle costs of their air conditioning systems.

I have confidence in Cooper Oates and would hire this company over any other HVAC company in the state.

Janet Rollins
Sacramento County Public Law Library

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Your team was very professional and detailed. The installers worked very hard and did an excellent job installing the units.

Joanne Kim
Rehabilitation Management Systems, Inc.

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I would like to thank you all for the successful completion of the HVAC redesign in the Bureau of Nursing.

Mark Elliott
Department of Consumer Affairs

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Awesome—You tell the bosses over there that your service tech is incredible—fast, knowledgeable…

Rhonda Higgins
DMG North, Inc.

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Dispatch is always available, whether I’m in the office, inspecting properties or out of town. COAC eases property…

Sharyn Verdon
Ramco Enterprises, Inc.

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I have confidence in Cooper Oates and would hire this company over any other HVAC company in the state.

Janet Rollins
Sacramento County Public Law Library

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What a nice change from what we have dealt with for years. This has made a piece of my job tons easier.

Teresa Heckley, ASO II
DHHS - Facility Management

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We want you to know that we are very pleased with the service you gave us, I especially want to thank you…

Tom Cabrera
Mailing Systems, Inc.

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I have confidence in Cooper Oates and would hire this company over any other HVAC company in the state.

Janet Rollins
Sacramento County Public Law Library

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I have confidence in Cooper Oates and would hire this company over any other HVAC company in the state.

Janet Rollins
Sacramento County Public Law Library

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Gary Pertle joins Cooper Oates »

SACRAMENTO, CA.  August 5, 2016  –  Cooper Oates Air Conditioning…

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Hitting Homeruns at Raley Field »

Raley Field is a unique and challenging set of buildings…

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German Juarez Promoted to Director »

COAC announced this week that veteran Senior Account Manager, German…

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COAC Construction Team Featured On »

The HVAC Industry’s largest publication, ACHR the NEWS, featured a…

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New Video: Caltrans Fan Wall »

Over the Memorial Day Weekend, the Cooper Oates Air Conditioning…

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Demolishing a 12 foot circulation »

Here is the before picture of the 12 ft. tall…

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Cal Trans Building New Fan »

The COAC Installation Team just completed a challenging, time-crunched project…

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Easy Trick to Save Energy »

Coil Cleaning Is a Money Saving No-Brainer. Its not really…

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R-22 – Fading Fast »

As HVAC system owners and contractors, we should all be…

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Cooper Oates Air Conditioning Announces »

Sacramento, CA, March 20, 2016 — Cooper Oates Air Conditioning…

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