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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.
A patented climate change solution
The fundamental science of a major climate change solution was first presented in a patent from 1874. It is based on a more efficient hydraulic piston.
Enthalpy Report
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 has to change.
Why is your building still hot and stuffy?
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 it… But nothing worked.
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.
Questions?
Our Business
Analysts of Pneumatic Systems Limited (APS) is a pneumatic controls company specializing in retrofitting Industrial, Commercial and Institutional (ICI) buildings for energy efficiency. Using logic systems designed by President and owner, David Strain, APS has saved millions of dollars in heating and cooling costs in over 45 years in business. These cost savings also translate into a significant reduction in pollution, benefiting our environment. In the spirit of environmental stewardship APS makes their innovative ideas available to anyone who may be looking to improve their systems performance. Please see our R&D section for more information on these designs and to download case studies.
Our Mission
Savings
Our specialty is energy conservation for Heating Ventilation and Air Conditioning (HVAC) systems.
Our customers have realized over $100 million in energy savings by retrofitting their systems to be more energy efficient. More importantly, these savings are passed on to the environment.
I have know Dave Strain for 27 years and his dedication to improve the Environment through his Pneumatic Control Strategies and Hydraulic Experiments have been a great asset to the Durham District School Board. Without them we would have not been able to achieve the millions of dollars in savings over all of those years.
Alex Chasczewski,
Manager of Energy and Mechanical Design (1996-2004) at Durham District School Board
Research & Development
APS is known for their innovative approach to common problems. Over the years we have heard many concerns that comfort will be sacrificed if energy savings are to be gained. Others worry that set-back are undermined by additional energy required to bring systems up to full capacity. Many people don’t know that buildings are ventilated through the HVAC system, as required by law, and feel the need to supplement ventilation. This can be a very costly mistake.
To help people gain a better understanding of how heating and cooling systems work, APS considers common situations, concerns and misconceptions and prepares case studies to help address these areas. APS also works on innovative new solutions to the problem of climate change.
Training
With over 30 years in business, APS shares their knowledge with others. Operating on the philosophy that we are all responsible for the health of our environment, APS offers their knowledge and expertise to others in the following capacities.
Case Studies
All of the case studies developed by APS are made public domain for the sake of the health of our common environment. These studies provide others with an overview of solutions to common issues with control systems that result in reduced energy consumption and associated emissions.