You know how it is. You look back at a marketing idea that worked really well, and all of a sudden, success seems so obvious.

“No wonder that worked,” you say. “It was a great idea.” 

The Duo-11/24V and Duo-14/24V air purifiers are two new additions to Field Controls’ Healthy Home Combo System line of products.

The Hobo MX1102 is the first data logger that records and transmits carbon dioxide, temperature and relative humidity wirelessly to mobile devices via Bluetooth Smart, the company says.

The Sheet Metal and Air Conditioning Contractors’ National Association says its new first-edition Architectural Sheet Metal Quality Assurance Guide is a tool for evaluating exterior sheet-metal building components — roofing systems, exterior walls, flashing, copings — during initial construction and for ongoing condition assessments and maintenance.

The York YD model C dual-compressor centrifugal chillers from Johnson Controls are now available with Optispeed variable-speed drives and an expanded capacity range of 1,500 to 6,000 tons.

Duro Dyne Corp. now offers the FG Mach III, a pin spotter designed to make ductwork fabrication insulation fastening faster, more powerful and more reliable.

Franklin Electric Co. Inc. offers its new Little Giant SpeediDuct line set duct and accessories to cover, protect and aesthetically hide refrigeration line sets for both mini-split and ducted air conditioner systems.

Weil-McLain now offers a new high-efficiency condensing boiler, Evergreen.

Esab has introduced the Warrior Feed 404 HD, a heavy-duty bench-top wire feeder designed for applications such as high-volume fabrication, structural steel fabrication, heavy fabrication, ship building and others.

Tjernlund Products says its Duct Booster line is ideal for combating airflow problems in spaces that are hard to heat or cool.