DDC Control System

You can save over 4,200 hours of energy a year – see how with SAM Mechanical! Direct digital control system, or DDC, systems are the brains of your HVAC system. They are put in place to monitor, measure, and adjust the temperature in your building. A temperature sensor, called a stat, sends a signal to a control panel which decodes the required tasks and sends the command to the control panel. The DDC control system your HVAC unit houses, has been updated to include some of the best sensors available to detect very specific nuances such as humidity, temperature, CO₂ levels, power meters, branch circuit monitors, and energy meters.

DDC Installation

While many older buildings don’t have advanced technology, it is important to understand why a building needs a DDC installed. The ability to schedule units to accommodate an occupied versus an unoccupied building gives you the ability to save money on energy. When you think about the weekends, holidays, and after-hours times, you could save over 350 hours of energy in one month. That’s over 4,200 hours a year! Trust our team of experts to install your DDC system today!


Regular maintenance is key to ensuring your system is working properly. SAM Mechanical technicians are proud to provide preventative maintenance for your DDC systems to avoid any costly repairs that may be prevented. Our team is knowledgeable about the types of maintenance needed for each specific system. Larger buildings will have a more complex system of controllers than one used in a home. Advanced systems are broken into different tiers for easy monitoring and maintenance. First Tier – This is the central workstation that will control all aspects of the DDC system. It receives, processes, stores, sends, and prints data integral to running a successful HVAC system. This is the point where you would be able to monitor issues that arise, change the temperature, and plan out a heating/cooling plan. Second Tier – This is the system controller that takes the information from the first tier, and decodes it for the third tier. Third Tier – A series of terminal controls is programmed to control one piece of equipment per each control. Each of the tiers work in conjunction with one another to keep the HVAC system running smoothly.


Additionally, an economizer control can set the system to use outside air when it is within a pre-specified range. Investing in a direct digital control system is a great option for buildings that want to have more control over their energy usage. Over time, the money spent on installation will be saved through energy bills. Like all equipment, at times your DDC system may need repairs to ensure it is functioning properly. The SAM Mechanical team of experts is available 24/7 to repair and replace your DDC system. Call us today to learn more about how we can help!

Looking for a trusted HVAC or plumbing contractor? See how Sam Mechanical’s team can make your life easier and save you money.

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