REFRIGERANT SWITCH: A Greenheck DGX-P116 Makeup Air Unit. Greenheck Fan Corp. has begun offering direct gas-fired makeup air units with the lower-GWP refrigerant R-454B. (Courtesy of Greenheck Fan ...

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He is in charge of developing and carrying out testing procedures for a wide variety of home appliances and smart devices including robot vacuums, smoke/CO detectors and air conditioning units.

Regulators in Canada and the United States are out of sync in banning the R-410A refrigerant that’s currently a mainstay of variable refrigerant flow (VRF) heat pump systems. SmartCentres is now ...

A Space National Guard, while opposed by President Joe Biden's administration, was seen as the preferred option among National Guard lobbyists and Air Guardsmen in those space-focused units.

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Tonight will remain dry, and it will be another cold night with largely clear skies for much of the night. Towards dawn, areas of cloud will drift in from the west. Sunday Tomorrow will remain ...

to move Air National Guard units with space missions into the active-duty Space Force -- which was first reported by Military.com in April-- was met with fierce condemnation by state governors and ...

Some can cost upwards of £700, but we've found a Great Value unit that's less than £300, while still giving brilliant results. Plus, there are several other portable air conditioners that hit the mark ...

He is in charge of developing and carrying out testing procedures for a wide variety of home appliances and smart devices including robot vacuums, smoke/CO detectors and air conditioning units.