As seen in the 2016 Profile of the Electrical Contractor, available at profile.ecmag.com, electrical contractors continue to get involved in controls work. This includes a significant increase in heating, ventilating and air conditioning (HVAC) controls work.
J.M. Electrical Co., a Lynnfield, Mass., contractor with a specialty in advanced automation building system installations, recently completed project operations at the 85,000-square-foot Hanscom Air Force Base Middle School in Bedford, Mass., which holds 312 students.
A while back, I wrote about a house with 14 kilowatts (kW) of solar panels installed on the southern exposure roof. Voltage and current monitoring at the breaker panel prior to the solar panel installation had shown 10–12-volt (V) deep sags occurring as frequently as every 22 minutes.
“Today we are building better houses than we ever built before, and part of that component is that we air-seal the houses. It’s the best thing you can do for an occupant, energy-wise, because the cost of heating is reduced considerably, and a house is easier to cool.
Commercial buildings could cut their heating, ventilating and air conditioning (HVAC) electricity use by an average of 57 percent with advanced energy-efficiency controls, according to a year-long trial of advanced controls at malls, grocery stores and other buildings across the country.