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Greffen Systems

DVM Industries

Greffen Systems

Our Partner, Greffen Systems, has been providing innovative technologies for the HVAC industry in both the public and private sectors since 2008.

M2G Advanced Intelligent Boiler Control

The M2G is an advanced intelligent boiler control that optimizes the heating efficiency of hot water boilers. A unit attached to each boiler monitors the temperature of the water in the flow and return every 10 seconds and the information is recorded, along with the heat transfer rates at both the first and second stage firings.


When a loading demand is made, the M2G system automatically checks the latest data it has stored and decides whether it is more economical to retain first stage firing or to introduce a second stage firing. The result is a substantial fuel reduction during less demanding situations while ensuring maximum capacity during heavy load periods.

M2G Advanced Intelligent Boiler Control

Self Learning Intelligence

The M2G is not to be mistaken with a time delay unit. The M2G uses self learning intelligence when deciding if and when a boiler should fire and for how long it should fire. Time delay units on the other hand will stop the burner from firing even when there is a real demand from the building for heat. The timer adds additional control but not additional intelligence to the system and comfort levels in the building will be negatively affected.


If you are interested in learning more about Greffen Systems, or would like to receive a Consultation about the M2G Advanced Intelligent Boiler Control; please send us a message.

We provide a no pressure atmosphere during our meetings. We offer both live webinars with our Partners included, or scheduled phone meetings with an IESG Energy Expert.

Learn More About The M2G