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Cooper Oates Air Conditioning has recently begun providing HVAC and refrigeration preventative maintenance and service to 125 7-Eleven locations as far north as Redding, south to Turlock and west to Marin area. Click here for map of locations.
More Than A VFD, Transformative Wave’s CATALYST Verified as Powerful New Way to Save Energy with Rooftop HVAC Units.Most commercial buildings are cooled by packaged rooftop units (RTUs), but RTUs have a problem: Their fans run at full power, even when cooling demands are low. A few years ago, retrofit kits – like Catalyst – hit the market. These kits enabled building operators to upgrade their existing single-zone RTUs to variable-air-volume operation with claimed HVAC savings of 25 to 50 percent.
Originally, these claims were greeted with much skepticism, but independent tests keep bearing out vendor assertions. In 2013, US Dept. of Energy’s Advanced Rooftop Control (ARC) Retrofit: Field-Test Results (PDF) verified savings and demonstrated that these products- especially Transformative Wave’s Catalyst – are ready for prime time. Read Article Here
Editor’s Note: Cooper Oates Air Conditioning is a certified Transformative Wave Affiliate, offering the Catalyst solution to building owners, property managers and facility engineers throughout the Sacramento Region. For information on how this RTU energy saving solution can work for you, contact info@coacair.com or download the Catalyst Brochure here.
Variable Refrigerant Flow (VRF) also known as a Variable Refrigerant Volume (VRV) HVAC systems are becoming an important HVAC solution in the U.S. VRF’s make up about 24% of the global commercial air conditioning market and over 35% market share in China, India, and Eastern Europe. USA only represents about 3% of the market, but it is growing rapidly with multiple manufacturers like LG, Daikin, Carrier, Mitsubishi and Sanyo.
A VRF system allows one outdoor condensing unit to be connected to multiple indoor fan-coil units, each individually controllable by its user, while modulating the amount of refrigerant being sent to each evaporator. By operating at varying speeds, VRF units work only at the needed rate allowing for substantial energy savings at partial-load conditions.
VRF systems have some distinct advantages over conventional systems but they are not for every situation or application. Learn more about this growing and innovative HVAC solution and review case studies at the end of the article. READ MORE HERE
Editors Note: We are seeing greater demand for this technology due to life-cycle cost benefits and occupant comfort benefits that outweigh the higher first-cost as compared to conventional systems.
The enduring fact remains that no matter how good a piece of equipment is, no matter how well a building is designed and no matter how much money is spent, all it takes is one override of the HVAC controls to throw off energy efficiency efforts. READ MORE
Facility managers know there are plenty of ways to get buildings to use less energy. Fortunately, there are many ways to improve HVAC performance that do not cost a lot of money to implement. Some have more to do with the manner in which the building is operated than the actual HVAC system itself.
Most low- and no-cost items fall into four categories:
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