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Letter of support

David Strain’s invention demonstrated an efficiency advantage greater than 15°/o favoring the diamondshaped
actuator over a conventional actuator.

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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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A climate in crisis. There is a workable solution

APS Controls introduces an internationally patented invention capable of reducing global fossil fuel consumption by over 33%, which could save $832 billion annually. Despite its potential, the invention faces rejection from governments, universities, and environmental organizations without substantive technical critique.

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Questions?
Old HVAC systems don’t listen — they just run. Smarter control means only heating or cooling where and when it’s needed. That’s how buildings are saving up to 57% on
Why is your building still hot and stuffy even after professional air balancing? A commercial building kept getting uncomfortable in the afternoons. Three different air balancing companies tried to fix
Controlling humidity isn't just about comfort—it also helps reduce the spread of viruses and bacteria. While most standard humidifiers use a lot of energy, cold-water spray systems can actually help
Enthalpy is the total heat content value in air, considering both dry bulb temperature and relative humidity level. If either value changes while the other is constant the enthalpy value
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
Industry experts contacted indicated that the volume of a Bourdon tube does not change while flexing or they had no data on this consideration. If the industry consensus is true,