The Ultra-Trak 750 monitors structure-borne ultrasounds produced by operating equipment and can detect either a rise or dropoff of sound levels in real time for trending or alarm purposes, the company says.

The Make-Up Air Module provides a mechanical way to ensure that makeup air is brought back into a house for any negative-pressure-producing equipment.

A power line carrier version of the WattNode® Plus digital power meter uses LonWorks® technology.

The DKLO Series control valve is available in two models: the single-seat bronze model and the single-seat cast iron model.

New electric wall heaters are designed to heat areas affected by cold drafts or wide temperature swings such as garages, vestibules, stairwells, etc.

The “2002 Haloguard® Refrigerant Gas Monitor Product Guide,” an instrument and accessory catalog, contains specifications and descriptions for models extending from those used in basic safety applications to the most stringent refrigerant gas conservation, says the company.

The HPS pressure switch provides an electrical indication that a rupture disc has burst and a relief valve has discharged, the company says.

The Indoor Air Quality (IAQ) Series has been added to the HEPAir line of hvac equipment.

The Whole House Fan floats on springs, the manufacturer states, and a canvas transition between shutter and fan ensures silent operation by eliminating solid installation that transmits vibration and noise to the structure.

Metalbestos Model CV is a gasketed and butt-welded vent system for high-efficiency gas- and oil-fired equipment.