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Cal Trans Building New Fan Wall Completed over the Memorial Day Holiday Weekend

Cal Trans Fan Wall, COAC, Mechanical Contractor

The COAC Installation Team just completed a challenging, time-crunched project at the Cal Trans Building across from the State Capitol. The project entailed de-constructing and dismantling an enormous single 12 ft by 12 ft. 100,000 CFM / 60 horsepower circulation fan and replacing it with a more energy efficient and significantly more manageable fan wall. The fan wall was made up of 15 integrated, independently controllable Hunt Air fan cubes that generate as much or more than the required 100,000+ CFM of air flow. The final size of the cube array, not including the supporting steel superstructure, was 16.25 ft. wide by 11 ft. tall. The entire disassemble, removal, preparation of new opening, and installation of the 15 cubes was completed in just under 70 hours during the long Memorial Day weekend with no work disruption to the Cal Trans tenants. All of the month’s long planning, creative solutions and great teamwork certainly paid off. Well done team!

Stay Tuned for the Time lapse video of the deconstruction and installation of the fan wall.


Dealing with HVAC Noise Complaints

Bothersome HVAC noises aren’t just annoying for occupants, they can also indicate HVAC dysfunction. Examine possible causes to determine where the problem lies. You may end up with a solution that can both save energy and contribute to occupant satisfaction and productivity.  Read More Here

HVAC Noise pathways

A Cool Idea – Electricity Free Air Conditioning

New materials may change the way temperatures are regulated


Cooper Oates Air Conditioning HVAC, Mechanical Contractors, Electricity

A Stanford University research team has invented a way for buildings to dump their heat without the needs for pumps, fans or compressors. This idea, described in a recent issue of Nature, is simple and provocative – radiate the heat back into space. The materials used for this process are still in the prototype stage and in the end would probably not eliminate all of a building’s cooling needs. The idea could be the start of something really cool.  Read More Here.


COAC’s New Virtual Walk through of the latest NASA project

Watch COAC’s Virtual Walk through video of one of our current NASA projects. The NASA N233 Cooling Tower #2 project is underway and the planning is comprehensive and challenging. COAC’s Principle Engineer Gary Storck and Designer Mike Garcia teamed up to craft this amazing video to show the client how the new cooling tower and pipes would integrate with the existing tower and fit in the existing space.

Gary Cline joins COAC at Hydronics Superintendent

COAC Hydronics SuperintendentGary Cline has joined Cooper Oates Air Conditioning (COAC) as Hydronics Superintendent, Construction Div. Gary has 30+ years of plumbing and pipe fitting experience. Gary will lead the effort of expanding the hydronics services offered by COAC’s already comprehensive suite of mechanical services. Gary can be reached at 916.862.2970 or by email at gcline@coacair.com.



COAC’s Original Footage of the “Amazing Amazon HVAC Airlift” to be featured on a CNBC Documentary, “Amazon Rising” this Sunday @ 6pm PST

Amazon, CNBC, HVAC, HelicopterRecently, COAC was contacted by an Associate Producer from CNBC. The producer explained that they were in production on a documentary about the incredible growth of Amazon and needed some footage that demonstrated the scale of the growth.

They had been tipped off by the Corporate Amazon PR Department to watch COAC’s video of the massive helicopter lift we accomplished for the new Amazon Fulfillment Center in Tracy CA, and gave us a call.

In our conversations with the producer, we agreed to provide a selection of still images and the raw footage in exchange for a credit at the end of the documentary.

We are very excited to see our work on a national show and were just told that our footage made the final edit.

If you have a moment this Sunday, June 29th at 6:00pm, we invite you to give a watch. Amazon is a fascinating company and we think our footage and stills will make the program worth your time (at least for us it will be).

Link to original video below:


Construction Tech: Tablets Proving Their Worth in the Field

Mechanical contractor, HVAC, Construction, technology

COAC’s Foreman Justin Tucker using iPad on Roof of Amazon Fulfillment Center in Tracy, CA

The construction industry is not known for embracing new technologies quickly. Any new tool or piece of equipment has to prove itself extensively in the field before it is considered worthy and even then it takes time to move the construction mindset to new ways of working. Tablets, like the iPad, and construction apps, like PlanGrid, are proving to be a useful field tool and dramatically increasing the speed and accuracy of projects.  Currently Cooper Oates Air Conditioning is proving the effectiveness of the tablet/app technologies on the 1.2 million square foot new Amazon Fulfillment Center underway in Tracy, CA.

With the tablet and app, our project manager and field foremen can carry a complete set of plans, from every sub-trade, that incorporates every change order and all notations made to the projects plans in a pocket of their safety vest.  They no longer have to go back to the job trailer to reference the paper plan set and try to figure out whether they are working off the most recent version.  We are now working from a unified, instantly updated set of plans.

Any issues or discrepancies in the field can be noted on the electronic plans. We can then take a picture of the problem, link it to the details on the plans and e-mail this immediately to the general contractor and any sub-trades.  It allows us to develop solutions quicker, more accurately and in collaboration with everyone on the job. The improvement in speed, clarity and accuracy of communication alone has proven its worth with COAC.

We will be integrating this technology into future projects, large and small giving us greater efficiency and giving our customers more insight and awareness of the building process.


COAC’s Amazing “Amazonian” Air Lift Story and Photos

Cooper Oates Air Conditioning, HVAC, Mechanical Contracting

Helicopter Lifting HVAC Unit Onto Roof Of Amazon Fulfillment Center, Tracy CA.

The word Amazon conjures up superlatives like the largest river in the world, the largest internet retailer and now, for COAC, the largest single-day helicopter lift in the company’s history.  This past Sunday, the COAC construction team successfully air lifted a staggering 124 commercial HVAC units onto the roof of the new Amazon distribution facility in Tracy, CA.

Every 2 minutes and 20 seconds a unit was safely flown from a large staging area onto the 1.2 million square foot roof and placed on a specifically designated structural curb.  This carefully orchestrated ballet of men and machine was accomplished with a team of 27 COAC construction veterans, with additional support from Big-D Construction, and the air and ground crews from A&P Helicopters.

The paramount aspect of the helicopter lift was safety. Everything from the high visibility clothes, predawn safety meetings, to the pre-lift pilot briefing hammered home the mandatory safety protocols.  With over 2,800 pounds of heavy equipment swinging on a cable overhead there is no room for error.

With three roof crews in place, ground crew at the ready and safety personnel surrounding all, the first lift took off at 7:32am. The 124 HVAC units where laid out on the newly poured asphalt in front of the building’s loading area in a very specific order of pick up. This “pick plan” was the gospel for the day.  All personnel and equipment movement was dictated by this, weeks-in-planning, pick plan to insure a safe, efficient and orderly process.

Cooper Oates Air Conditioning, HVAC, mechanical contractor, Amazon Distribution Center

Over 60 HVAC units rigged and waiting to by helicoptered on to roof of Amazon Fulfillment Center.

The lifting process actually began during the weeks leading up to Sunday’s lift with the careful planning and staging of material and equipment on the ground and roof, safety coordination, contingency planning and finally, placement of equipment on the ground and pre-rigging 60 units. Project Manager Kent Keller, Foremen Justin Tucker and Anthony Vallejos and support crews invested hundreds of hours developing the plan and making sure there was nothing left to chance

Cooper Oates Air Conditioning, HVAC, Mechanical Contractor, Air Conditioning

Field Superintendent Dave Armenta directs helicopter and roof crew to land HVAC unit safely.

The 1967 Vietnam-era “Huey” helicopter, piloted by Erik Vandagriff of A&P Helicopters, did the heavy lifting from early Sunday morning until well into the afternoon.  The entire “ballet” was directed and conducted by Field Superintendent Dave Armenta, with hand signals and more than a few choice words, making sure that men, helicopter and equipment were in the right place at the right time, 124 times.
By 2:30pm, as the Tracy winds were beginning to make flying more treacherous, the last unit of the day was safely lowered onto its curb.  The planning and execution of this enormous undertaking was a resounding success. The day’s accomplishment bodes well for the next lift on August 25th, where the team will lift the remaining 90+ units on to the roof of this “Amazonian” structure.

Cooper Oates Air Conditioning, HVAC, Mechanical Contracting, Amazon,

The entire Cooper Oates Air Conditioning air lift crew

Construction Team Gears Up for Amazon Project in Tracy

Amazon Logo On Tiltup WallCOAC’s Construction Team is in high gear on the new two million square feet Amazon Fulfillment Center in Tracy, CA. The facility will be built on 90 acres off of Grant Line Road and be one of the largest projects in COAC’s history. Right now the enormous walls are being tilted up, the ductwork is being delivered and the final planning details are being worked out. Completion of the facility is slated for this October, in time for the holiday shopping season. Look for future updates on our progress of this massive construction project.

COAC Construction Trailer Arrives at Amazon Tracy Project

COAC Team Offloads First Batch of Ductwork for Amazon Tracy

Reviewing Mechanical Plans for Amazon Tracy