Demand Control Myth #1

August 2012

“A demand controller will turn off my lights, TV, computer and any other electric equipment when it needs to reduce electric use.”

This statement could not be more WRONG for 2 main reasons:

  1. “Plug Loads” (any product that is powered by an ordinary AC plug) are typically not controlled by an Energy Sentry Demand Controller.Only non-essential loads are connected to the demand controller. By nonessential we mean any loads that can be deferred for a brief period of time with little to no eff ect on comfort convenience, or interruption of a process.
  2. Only non-essential loads are connected to the demand controller. By nonessential we mean any loads that can be deferred for a brief period of time with little to no effect on comfort convenience, or interruption of a process.

woman frustrated paying bills

As consumers ourselves, we know how irritating it can be to somewhat lose “control” of your building. Imagining a situation where we really need to use an appliance, or our computer shuts down in the middle of an important report are all fears that cross one’s mind when thinking of controlling their electric use. But rest assured, a demand controller has absolutely no effect on these types of electric loads. In most situations, a demand controller is used primarily with loads that have some sort of thermal storage such as a hot water heater or an air conditioner. If the electric load can be turned off for short amounts of time with very little reduction in stored energy, then it’s a great candidate for demand control. This is because energy is being stored in a different form such a heat or cool.

Below or common types of controllable electric loads:

  • Water Heater
  • Air Conditioner
  • Heat Pump
  • Baseboard Heating
  • Ceiling Radiant Heat
  • Electric Furnace
  • Induction Furnaces
  • Air Compressors
  • Rinse Tanks
  • Clothes Dryer
  • Hot Tub or Pool Heater
  • Refrigeration- Large cooler and freezer cases

A demand controller will not affect your day-to-day use of common electric appliances; however it will affect your electric bill… but in a positive way. So put the fear of demand control to rest and start saving money today!


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