Energo Forced-Air Heating
How Your Furnace Works Without EnerGo
If you set your thermostat to 70 degrees and the temperature in the house is less than 70 degrees, the thermostat sends a signal to the furnace to turn on the burner and blower. The burner heats up a heat exchanger and the air passing thru the heat exchanger gets warmed up to a maximum temp (i.e. 155) and blows thru the house.
Why Your System Is Inefficient
At a certain point the heat exchanger and therefore the air being blown as well, reach a maximum temperature and cannot get any hotter. The burner is still running but in reality is not adding any heat and is therefore wasting a lot of fuel. Until the desired temperature is reached in the house and the thermostat sends the signal for the burner and blower to shut down, the burner will continuously run although it is not going to increase the air temperature anymore.
When the temperature in the house is below the setting on the thermostat, the thermostat will still send a signal to the furnace to turn the burner and blower on. However, once the maximum temperature is reached, EnerGo will shut the burner off. The blower will still continue to blow the hot air throughout the house, achieving the desired temperature in the same amount of time. The EnerGo will measure the rate of temperature change in the air being blown to determine when to turn the burner back on to get the heat exchanger back to its maximum temperature and then will shut the burner again. Therefore, in a given 10 minute period, EnerGo may reduce the burner run time 2-3 minutes, thereby saving a lot of energy consumption.
EnerGo Baseboard or Radiant Hot Water Heating
How Your Boiler Works Without EnerGo
When the temperature in the house goes below the thermostat set-point, a signal is sent to the circulator (or pump) which circulates the hot boiler water through the house and its radiation (baseboard, convectors, radiators or radiant).
The boiler has a control called an aqua-stat. The aqua-stat maintains the boiler at a certain temperature setting, usually around 180 degrees F. As the circulator moves the hot water from the boiler and pushes the cooler water in the radiation back to the boiler the temperature in the boiler begins to drop. The aqua-stat senses this drop in temperature and starts the burner to raise the boiler water temperature back up. Once the temperature is reached in the boiler, the burner shuts off.
Why Your System Is Inefficient
The boiler in your house is sized to give you heat during the coldest days of the year which happens about 1 to 2% of the heating season. The rest of the time the boiler is “oversized” because it is warmer outside. Therefore, most days you do not need to maintain the water temperature in your boiler at the aqua-stat setting. A lower water temperature would heat up your home just as quickly. But because your aqua-stat turns on the burner every time the temperature dips below its setting you will have a lot of unnecessary on/off cycles and therefore, a lot of wasted fuel consumption.
The EnerGo takes advantage of this “oversizing” by delaying the start of the burner when the aqua-stat calls it on. It does this by using a sensor to watch how fast or how slow the water temperature leaving your boiler is changing. In other words, using all of the energy stored in the boiler water. While watching the temperature drop, the EnerGo is constantly coming up with a new start point for the burner. The end result: fewer on/off cycles (which are very inefficient and wastes fuel) and slightly longer more efficient on cycles. This means less fuel consumed with no negative effect on your comfort.
It’s similar to the concept that stop and go driving uses a lot more gas than a smooth ride.
EnerGo Air Conditioning
EnerGo microprocessor determines the “cooling demand” and “thermal characteristics” of the entire air conditioning system. It analyzes the compressor’s cycle pattern and modifies it to provide the required amount of cooling in the most efficient manner. EnerGo will delay the start of the next “on” cycle based on the “cooling demand” analysis. The computer calculation provides consistent temperature with less frequent and more efficient compressor cycles, resulting in significant energy savings. EnerGo is compatible with systems regardless of whether they were sized properly or adequately maintained. You can expect energy savings in the range of 10%-20%.