Custom Designs. Engineered Solutions.
550 West Avenue
Stamford, CT 06902
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ASD is a HVAC controls, monitoring, mechanical controls and automation engineering company that specializes and focuses on high-end residential homes.

But that’s just the start. ASD’s uniqueness lies in our experience and skill to address and solve the most complex problems of an existing HVAC system or to create a specialized system, from the ground up.

We work with you and your vendors for a flawless install, built to order for every project. As soon as the panel arrives at your job site, it is ready to be installed—pre-assembled, tested and documented, crafted specifically for you.


The industry standard isn’t much of a standard at all. You walk into the mechanical room at a job site and often see several small control units drilled into the plywood. These units operate the HVAC system components separately, increasing the potential for an array of problems for both residential and commercial projects. Some of these problems are:

  • Installing and servicing individual units in multiple locations.
  • Swings or imbalances in temperature caused by poor controls and lack of coordination between air and wet systems.
  • Overheating or overcooling of spaces.
  • Inefficiency of monitoring and maintenance.
  • Unable to alter system design because of last minute changes in the building design.


ASD aims to solve these problems with a single HVAC control and monitoring system designed to the individual’s specifications and needs.

We understand that an individual’s environment is personal and that uniformity of temperature is important and shouldn’t drastically change suddenly. Our design strategies are a combination of this understanding along with our in-depth HVAC and control systems knowledge.

Our systems help to seamlessly integrate all components of the HVAC system resulting in the humidity, temperature, ventilation, and air pressure to remain balanced and consistent.

Also, our control systems are designed to meet your available foot space and this is no problem for us, we can design ultra-compact systems; it’s one of our strengths.

Benefits of ASD’s integrated HVAC systems include:

  • Meet complex multi-system coordination and control.
  • Maintain optimum air quality and thermal comfort conditions.
  • Reduce energy use.
  • Safe operation.
  • BACnet monitoring and control.
  • System performance alarm and monitoring through automatic e-mail notification.
  • Built to specification of footprint, often a tight space.


As we engineer these control systems to meet your customer’s needs, we address specific space requirements which are often in tight spaces. Our strength is in our superior craftsmanship in panel design and manufacturing aimed toward seamless integration for both residential and commercial projects. We want to ensure efficiency in installation and start-up with our ultra-compact panel designs, which help our customers maximize space.

With ASD’s design approach, the entire control panel for a residential or commercial system is developed as a holistic unit.  This means that the technician can install a single control panel to handle all functionality. Rather than a technician arriving to the job site and piecing together various components of a system to obtain the project’s required functionality, ASD drastically boosts the efficiency with a single unit, saving time in start-up, installation and testing. As a result, businesses can now operate more economically.

We design, engineer, assemble, and test entirely in Stamford, Connecticut.

Call us now