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 ...
Roy Cooper’s office announced Thursday. Wisconsin-based Greenheck Group will invest $58.8 million in the project in exchange for $3.27 million in state incentives, according to a press release ...
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