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Local 455

2026-08-24

ATMO America: St Paul Local 455 Replaced 27 Rooftop HVAC Units with Single CO₂ Heat Pump

An image of Jeremy McConkey, Training Director at Local 455, Alessandro Silva, Senior Application Engineer at Bitzer, and Sean Jarvie, CTO of Flow Environmental Systems, presenting at ATMO America. They discussed the installation of a CO2 heat pump for HVAC and domestic hot water in Local 455 training facility in St. Paul, MN.

2026-02-24

Flow Environmental Services, St. Paul Local 455 Team Up for CO₂ Heat-Pump Training and Demonstrations

An image of St. Paul Steamfitters/Pipefitters Union (Local 455) where Flow Environmental Systems installed an ANSWR CO2 heat pump for training and demonstrations.