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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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When Physics Gets Puzzling

The Energy Enigma That’s Got Scientists Scratching Their Heads

What happens when a simple invention challenges one of physics’ most famous equations? Spoiler alert: Einstein might need to make room at the table.

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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,
This HVAC case study examines the heating control systems in the oldest high school in Peterborough, Ontario, and proposes energy-efficient improvements.
APS has developed many unique HVAC logic circuits: improving comfort and reducing energy consumption. The reductions caused the avoidance of over 60,000 person-years of GHG emissions with a three-person crew.