Globally a mature product, its more recent adoption in the United States makes VRF something of a developing trend that more contractors are choosing for their businesses. The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) brought further legitimacy to VRF products when it launched a new certification program.

Since the tax credit program became available, all types of geothermal options have been on the minds of the building community. The earth loop, often referred to as the refrigerant loop, may be installed in three different configurations: diagonal, vertical, and horizontal.

The Ice Bear® ice storage air conditioner uses electricity at night to store energy in the form of ice. By making the ice when electricity is less expensive and more abundant, the unit uses that stored energy during the day to provide cooling with less electrical input during times of peak demand.

Baseball, home runs, and winning games were the general theme of The Unified Group’s Sales Forum. You could extend the metaphor and call the forum a training camp, where attendees were able to work in small, noncompeting groups with experienced coaches.

Whether it’s getting the system ready to use for the very first time or figuring out what’s wrong before fixing it, these detectors, monitors, sensors, and tools make it possible to get the job done.

Designed to reduce a business’s electric bill, the Demand Limiting Controller (DLC) attacks the three charges for electricity: demand, peak rate, and use.

The three mechanical contractors described in this article see a mix of various types of health care projects: from huge new construction developments to the predominantly smaller projects (clinics).

Even though the first cost of hydronic equipment is usually more expensive than forced-air units, customers often remain willing to pay the premium for the constant, even temperatures a properly designed hydronic system can provide.

The obvious method to keeping energy bills in check is for homeowners to have regular maintenance performed on their gas boilers to ensure they are running optimally. Another way to cut down costs is to make strategic retrofits that can improve the efficiency and safety of older boiler systems.

Record power demands during the last two winters caused electrical distribution zones to trip off-line. How did that affect HVAC systems?