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Helping you clear the air.

Experts in environmentally responsible HVAC&R systems.

Who we are

Flow Environmental Systems is a US-based engineering company bringing commercially viable and environmentally responsible HVAC&R technologies and solutions to the North America market.


The Built Environment has a very substantial carbon footprint that is not being managed downward.

“Property emissions are a combination of two things. The first is the day-to-day running of a building: energy used to light up, heat or cool homes, office blocks and shopping malls. The carbon produced in this way is “operational”, in the vernacular, and accounts for 27% of all annual carbon emissions globally.” 

The Economist, June 22, 2022

Why Flow?

Flow has developed and patented a better heat pump. It is more efficient, can operate effectively in wider ambient temperature bands, and has a quicker payback than current heat pump alternatives.


It is environmentally friendly using natural CO₂ as a refrigerant that neither contributes to global warming nor emits poisons in the form of PFAs like HVAC systems using modern synthetic refrigerants.

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Heat Pumps. Chillers. Boilers.

Answr CO2 Heat Pump
CO2 Heat Pump | Flow Enviro Sys
High Rise Building
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Multiple Modes of Operation.

University Building
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