It’s the middle of July, and a customer calls to say that the unit that heats and cools their small office “isn’t cooling at all.” When you arrive, you find a 230-V, eight-year-old, rooftop package unit heat pump with three-phase compressor. After an evaluation of the system, you'll be asked a three-part troubleshooting question.
Many service managers move into the position without a great deal of opportunity for training and preparation in the areas of communication skills, customer service, dealing with different personalities, or managing people. This excerpt from a new E-book discusses how to be an effective manager.
a specification that allows for any system option and protocol leads to a more
complex system, one that is more cumbersome to install, commission, and
maintain. It is recommended to pick one common protocol for the entire building
control system infrastructure. Costs go down and maintainability goes up.
The concept of sustainability has gained interest in direct proportion to the recent increases in energy costs. There is a frequently overlooked initiative that can have the most significant impact on reducing energy usage in buildings and can set the stage for future efficiency initiatives: retrocommissioning.
The 9/11 attacks came as the United States has become a more religiously diverse country. Since then, the number of religious discrimination cases that the U.S. Equal Employment Opportunity Commission (EEOC) receives has been on the rise.
The day is scorching hot and Bob gets a call to go to an office building because the air conditioning system is off. It is a water-cooled chiller located in the basement with the water tower on the roof of the building. Btu Buddy assists Bob as he finds that the condenser tubes are dirty and require cleaning.
The most profitable HVACR contractors are those who monitor their expenses and cut costs whenever possible. Never has that been more evident than in an economically challenged state like Michigan. The NEWS recently sat down with three Michigan contractors to discuss cost-cutting measures.
The air conditioning season lasts almost the entire year in sunny Arizona but that doesn’t mean contractors have more than enough work to stay profitable. Cutting expenses is still a priority, several Arizona HVACR contractors told The NEWS during an informal roundtable meeting.
Designing, constructing, or renovating high-performance buildings requires a whole building approach. This differs from the traditional design/build process, as the design team examines the integration of all building components and systems and determines how they best work together to save energy and reduce environmental impact.
Most compressors fail due to system malfunctions, which must be corrected to prevent repeat failures. After a compressor fails, field examination of the failed compressor often will reveal symptoms of system problems. Corrections will help eliminate future failures.