Retrofitting

Adjust Outside-Air Quantities

Sometimes air handlers are set up to provide more outside air than is necessary. Space use or occupancy rate may have changed since the original installation. Applicable ventilation codes may have changed. A quick check […]

Verify The Integrity of Vapor Barriers on Cold Lines

Cold lines exposed to warm, humid air cause water to condense out of the air. A considerable volume of water can drip off the chilled water lines. This, in turn, can damage adjacent pipe insulation, […]

Outside-Air Sensor Adjustments

Fresh air is introduced into the return air of most industrial and commercial air-handling systems, for several reasons: 1. to replace exhausted air or air that has been lost because of exfiltration; 2. to provide […]

Insulate Partitions

Many facilities have walls that contribute to the HVAC load but which are not exterior walls (or floors or ceilings). These are normally called partitions, and they add to the building load an amount proportional […]

Proper Adjustment of Unit Controls

A big air handler has many controls that monitor and regulate its operation. These devices include thermostats, damper controls, static pressure sensors, enthalpy sensors, and smoke detectors. All are located in a rigorous environment: there […]