HVAC Contracting

RSS

Bob and Tim were on their way to a no cooling call, their first of the season, when Tim asked, “Wonder why we would have a no cooling call this time of year? It is only 75°F during the day and 40° at night.”

Modifying an off-the-shelf control knob used in avionic systems stopped repeated service calls for a major maker of commercial rooftop units. Electronic Hardware Corp. (EHC) was able to change its standard PT70 control knob to fit on a small circuit board inside the different HVAC models.

More states are legalizing medical marijuana, and recreational use is legal in two others. A tangle of federal laws adds to the confusion. Being aware of the legal issues involved and the changing legal landscape is important for employers to ensure that their drug testing policies are legal and enforceable.

Government studies show more than 3,000 people die as a result of driver distraction every year. Connected mobility expert Peggy Smedley proclaims the technology to eliminate accidents and deaths due to distracted driving is literally at our fingertips. 

For the HVACR technician, the right tool for soldering and brazing pipe — an air-fuel or oxy-fuel torch — depends on the type and diameter of the pipe, its location, and considerations related to cost, safety, convenience, and ease of use. This article will examine those factors, as well as clarify some technical issues.

Keeping large buildings well ventilated has always been a challenge. In health care buildings especially, supplying clean fresh air is of utmost importance to prevent CO2 and other contaminants from accumulating. The answer to energy efficient, healthily ventilated ambient environments? Natural ventilation.

Many small businesses have plain, nondescript logos, and have built a plain, nondescript brand. In his book, Building a Big Small Business Brand, Dan Antonelli notes that it doesn’t have to be that way. Building a big brand can make a big difference for the small business owner.

According to a recent study by the Ponemon Institute, data breaches cost U.S. enterprises an average of $5.4 million per incident in 2012. Cintas Corp. partnered with the Ponemon Institute to identify five digital devices that are overlooked areas in a business and could be subject to a security breach.

Tim had asked Bob to go into depth about tuning an oil burner during the last service call. “You said that oil burning equipment requires more attention than any other type of residential heating equipment,” Tim said. “Can you explain why?”

There has been a deluge of recent technological advancements that are creating new air curtain applications that were barely imaginable 10 years ago. Advancements have ranged from more efficient electric heaters to manufacturing improvements that now extend lengths up to 16 feet.