Save Up To 30%, Annually, On Energy

HVAC energy costs represents up to 50% of a commercial facility’s energy usage.

Save Energy System’s Patented, Demand Limiting Controller (DLC)  is specifically designed to address the two main components of an electric utility bill.

1. Usage- (kWh) The total amount of electricity  consumed over a 30 day billing cycle.

2. Demand- (kW) An additional fee charged to address the rate at which a facility consumes energy.

Running all HVAC units simultaneously represents the highest consumption of energy and the greatest demand. The DLC’s goal is to keep the HVAC rooftop units from running simultaneously, while keeping the facility comfortable. 

So, How Do We Do It?

The DLC is connected to all thermostats in a facility including zone and supply sensors while communicating via internet with the local weather station for temperature. We constantly monitor what’s occurring in each zone, HVAC unit and outside temperatures.

This next piece is critical-We input the energy use of each component for each roof top unit (or split) into the DLC, including each compressor and evaporator fan. We now have the energy consumption of the HVAC system.

 Savings goal- We set the DLC to reduce Demand (the total energy consumed by the HVAC units) by 20%. We call it a goal because on a hot day we’ll let the HVAC systems run without limitations,  to provide the highest level of comfort. 

Manage to one degree- The DLC manages each zone to within one degree, broken down into tenths.

Actually reduce energy consumption-Before the DLC turns on a rooftop unit to cool or heat it checks to see if there is enough power available under the Demand limit.  If so, it turns the unit on.  If not, it looks at the temperature in each zone to determine if it within its “comfort zone” (within 1 degree of its set point).  If it is, it will then turn off the unit to provide more power under the Demand limit. The DLC will shut off one or more components in one or more units to accommodate turning on the next unit. This process allows for an HVAC unit to be turned on with no net increase in energy consumption resulting in a decrease in Demand and overall energy consumption and saving you money.