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

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Data Loggers Identify Hidden Energy Waste

Monitor with COAC LogoYour utility bill is a great indication of energy consumption, but it says very little about energy usage. If you want to get a clearer picture of that, add a new device to your toolbox. Low cost data loggers show specific system-by-system statistics, allowing you to hone in on inefficiencies and make informed, data-driven decisions that can save energy dollars everyday.  (Read More)

Calculating Energy Conservation’s True Value

You could be missing up to 31% of the hidden value of energy conservation, according to recent research.
Benefits such as decreased maintenance costs and labor, avoided capital investment, and reduced sales taxes and environmental penalties are easy to overlook, but contribute greatly to the value of your conservation projects, according to energy expert Eric Woodroof, a certified energy and carbon reduction manager.

Ready for AB1103?

Building_in_the_Sky_by_handful_of_angerCOAC Building Benchmark Resource Center 
Just Released: The California Energy Commission has delayed enforcement of AB1103 (the Non-Residential Building Energy Use Disclosure) until Sept 1, 2013 for buildings 50,000 square feet and above. They explain the delay is due to the EPA’s “Portfolio Manager” website being down until mid July. Enforcement dates for smaller buildings have not changed.

If you have any questions COAC’s Benchmark Resource Center can guide you though the entire process. Contact our Energy Services Dept. at 916.3811.4611 or bschmalzel@coacair.com to get started immediately.

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


Power Tracking Captures More CAM

PTABs gives you more control and accuracy
over tenant power billing and tracking
Cooper Oates Air Conditioning has pioneered and maintained an automated Power Tracking & Billing System called pTabs™. The Power Tracking and Billing System is particularly valuable for large buildings with Class A tenants since power is tracked for both lease hours and after-hours use. Building owners can recoup electricity costs by tenant for all or a portion of the space. pTabs™ provides building owners and managers with:

  • Track After-Hours Power Use
  • Recouping Electricity Costs by Tenant
  • Real-time Building Performance Data
  • Historical Tracking

Gain more control over your building utility expenses and capture more accurate power use billing with pTabs™.  READ MORE HERE

Bob Knows: The Hidden Value of Cleaning Coils

Bob Plotner Service Operations Manager
By: Robert Plotner,
Cooper Oates Air Conditioning,
Service Operations Manager

Clean Coils Make Great Sense — and Save Cents

The coils in your air conditioning units are where heat is either removed or added to the space. Both the condenser and the evaporator coils are engineered or “sized” to provide optimum heat transfer as required by the space being conditioned. Optimum heat transfer and system efficiency, however, is determined by how clean the coil surfaces are where the heat transfer takes place.

The air moving across these coils, in almost all cases, contain dust, dirt, pollen, grease, and moisture. These contaminants settle on the coil surfaces, adversely affecting the coils’ ability to transfer heat. The cost of operating dirty air conditioning is greater than you might suspect. When the coil becomes fouled with dirt and grime, it cannot provide its designed — or, in some cases, even adequate — heat transfer, and that costs you
in many ways.
Dirty Clogged Condensate Pan 2LRThe Costs of Dirty Coils Add Up

Dirt and grime insulate the coils, increasing discharge pressures that increase the amperage draw and run time of the compressor and other components, while simultaneously reducing heat transfer capacity. Equipment operating with dirty coils can use more than 30% more energy than equipment with clean coils. You end up paying for more power on equipment that is working harder and harder to get the same or less cooling.
The cost of dirty coils goes beyond just energy use. As dirt and grime collect on the coils, they restrict heat transfer and cause the compressor to work harder. This adds more heat to the system and causes pressure to rise. Rising pressure results in a loss of cooling capacity of up to 30%. A 10-ton system with a 30% loss provides only 7 tons of cooling. This loss of capacity is most noticeable on the hot days when cooling is needed the most.

The bad news does not stop there. Higher operating pressures and temperatures caused by a dirty coil reduce the equipment’s life expectancy. The elevated system temperature and pressure leads to the premature breakdown of the compressor’s lubricant, just like running your car to hot and the oil breaks down. In addition, acid formation can occur, leading to an acid burnout. Lubricant breakdown and acid formation will seriously compromise the compressor and ultimately will lead to premature catastrophic equipment failure. Compressor failure means no cooling and no cooling means unhappy tenants. Compressor replacement means considerable downtime and cost to the building owner. Clean coils can reduce the risk of these “expensive” consequences.

Coils Also Affect Indoor Air Quality

A fouled and dirty evaporator coil creates an excellent breeding ground for bacteria and mold that can impact a building’s indoor air quality. Cleaning, sanitizing, and protecting the evaporator coil and surrounding areas is critical. In addition to the coils, the condensate pan is prone to the build-up of bacterial slime. As condensate collects in the pan, and doesn’t drain properly, it can become a breeding place for harmful bacteria. This build-up can cause odor as well as plugged drains and overflows, which in turn can cause significant water damage.

Cooper Oates Air Conditioning

The benefits of regular HVAC coil cleaning and preventive maintenance:

•  Significant energy savings every month (why pay for more power than you have to)
•  Peak equipment efficiencies (run the equipment for the least amount of time)
•  Enhanced reliability & reduced breakdowns (prevent downtime, damage and unhappy tenants)
•  Longer service life (protect this asset and avoid replacement for as long as possible)
•  Improved indoor air quality. (protect your tenants comfort and health)
•  Energy conservation (realize savings without sacrificing comfort)

Summing up

If your car got 30% less gas mileage or your refrigerator lost 30% of its cooling you would probably see that as a problem that needed immediate attention. Dirty and fouled coils create the same urgency with potentially much more expense at risk.
© Cooper Oates Air Conditioning 2013