HVAC Excellence accredites HVAC program at Sullivan College of Technology and Design; SMACNA to hold Financial Boot Camp in May; more HVAC organization news briefs.

Environmental Systems Design Inc. promotes vice presidents; Burns Mechanical names new service division manager; more HVAC commercial contractor news briefs.

MacroAir Technologies Inc. will end its manufacturing relationship with 4Front Industries; more HVAC manufacturer news briefs.

North Little Rock Winsupply Co. signs an exclusive agreement with Venstar Inc. 

Air Treatment Corp. will represent Krueger-HVAC in Northern California.

AHRI to hold Spring Meeting in May; ASHRAE to host free webcast; more HVAC organization news briefs.

Lennox Intl. Inc. announced a quarterly cash dividend of $0.24 per share of common stock, payable April 15.

Ferrandino & Son Inc. names Jon Gaiman to its board of directors.

Arzel Zoning Technology Inc. names new customer service representative; Port-A-Cool LLC receives award; more HVAC manufacturer news briefs.

Coolgas Inc. hires vice president of technical sales and marketing; the Master Group L.P. acquires distribution component of Eastern Refrigeration Supply Co.; more HVAC distributor news briefs.