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Building owners and managers are seeking experienced system integrators who can help guide them through the complex process of choosing a total BAS solution that goes well beyond just controlling the heating and cooling equipment. 

HVAC chiller manu­facturers are offering a range of products in multiple configurations that use new refrigerants, consume less energy, communicate more effectively, can be serviced more easily, and may be designed to fit a wide range of applications.

Performing regular maintenance on chillers ensures they will operate as efficiently, and for as long, as possible. And while maintenance plans and practices can vary from region to region, manufacturer to manufacturer, and even client to client, HVACR contractors agree that minimal maintenance is better than no maintenance.

The average price for a gallon of gas in 2012 was $3.68, per the U.S. Energy Information Administration (EIA). Prices averaged $2.43 in 2015 and are expected to maintain similar or lower prices throughout 2016 and into 2017.

An undercharge of refrigerant will cause low head and suction pressures, but that is not the only thing that will cause both pressures to be low. An undercharge will have low condenser liquid subcooling readings on the high side, where a dirty air filter for the evaporator will not produce low condenser liquid subcooling readings.

As a refrigeration technician, how important is an understanding of basic mathematical relationships? In my opinion, very important. It makes a technician a better technician.

The supermarket industry realized a long time ago that it is impossible to solve environmental problems related to refrigerant leaks using a repair-based approach (i.e., with policies that focus on leak repair and record-keeping). Yet, the U.S. Environmental Protection Agency’s (EPA’s) main regulatory program to address harmful refrigerant emissions reflects a repair-based policy.

The manufacturers provided all of the data included in the product grid as well as the photo feature. Therefore, any questions should be directed to them via the contact information provided in the photo feature section.

As the first of its kind in the U.S., the standard outlines requirements and best practices for geothermal project design, installation, commissioning, and more in the U.S. and Canada.

VRF systems have become very popular in the commercial market and are expected to gain even more market share in the coming years. Each system type comes with its own unique set of benefits, and as long as building owners and managers remain open minded, they may be surprised at the possibilities now available.