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A great asset to DDSB

David has been our primary Controls Contractor for last 25 years. We are always surprised that even today he comes up with new and innovative designs.

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Battle against climate change

Logical approaches to addressing climate change in the HVAC industry can provide both indoor and outdoor environmental improvement as well as financial benefits. Sample energy reductions calculated by the building owners present paybacks about one year while they reported superior indoor conditions for their building occupants.

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DX Cooling Opportunity

HVAC systems that mix fresh air and building return air to varying quantities for cooling purposes often have control logic comparing the total heat content of the outdoor to the total heat content of the return air.

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Questions?
Mr. Strain’s work leverages modern technology to achieve superior results. With further development, this invention could contribute to reducing energy consumption and reliance on fossil fuels, aligning with global efforts
David has been our primary Controls Contractor for last 25 years. We are always surprised that even today he comes up with new and innovative designs.
David Strain's invention demonstrated an efficiency advantage greater than 15°/o favoring the diamondshaped actuator over a conventional actuator.