Ducted Air Circulation Systems
The HEG Air™ Circulation system is a ducted air redistribution (or transfer) system that allows you to control the airflow throughout a house. Add an optional Roof Heat Recovery Module to access free heat from your roof space, a filtered inlet to improve air quality or a ventilation module to eradicate window condensation.
Ducted Air Circulation Systems
- Base: Ducted Air Transfer
- Optional Module: Window Condensation Control
- Optional Module: Roof Heat Recovery
- Optional Module: Particulate Air Filter Intake
The HEG Air™ Ducted Circulation System (ACS) is a hybrid system that has been created over 5 years by Home Efficiency Group through a process of continual refinements. At its heart, the HEG ACS is an overgrown air transfer system, albeit with significant differences, including:
- EC Fans – low wattage, high air volume, quiet operation;
- Larger Diameter Ducting – For noise reduction and efficient heat transfer.
- Effective Outlets – Subtle outlet style for minimal draughts.
- Simple Automated Controller – For accessing free solar air via the roof heat recovery module, and to allow for simple operation for the customer.
- Optimal Ducting Configurations – Methods for noise/vibration reduction, developed and refined over the years by our technical team.
Usage Tips for the Ducted Air Circulation System
The Ducted Air Circulation (ACS) system works by using the warm air sitting at the ceiling level in your living room, usually near your heat pump and/or wood heater, and ducting that via an inline fan to the colder rooms of your home. The system should be left on 24/7 from the moment you are using heating until you are not e.g. typically May to October in Tasmania.
The system is controlled in two parts:
- The main ON/OFF switch will turn the entire system on, including the Roof Heat Recovery control panel. You can however turn the control panel off, leaving the system working in ‘Fan Mode’ only. This can be used in summer to help move warm air out of bedrooms or distribute cooler air from open windows around the home.
- The system also has a Roof Heat Recovery (RHR) system that takes warm air from the ceiling space via a filtered inlet and adds that to the air the ACS is moving around the home. This is the controller with the red LED numbers on it. The roof space gets warm on sunny days due to solar gain from the sun, similar to how a car interior heats up on bright cold days.
The RHR controller is set to open at 19 deg C and a red light will appear on the top right of the controller when it opens. The controller shows what the current temperature is in the roof space, not the temperature in your living room.
Leaving Doors Open or Ajar, Plus Playing Gatekeeper
The system will only work if the doors between the inlet and outlets are open but this can be used to help control the temperature in certain rooms. By closing a door to a room it will not heat up as much as rooms with doors open.
Depending on the layout of your home, you can “play gatekeeper”, effectively directing the returning warm air to travel back to the inlet via different rooms or parts of the house. Air that is flowing into bedrooms invisibly returns to the inlet via the easiest path available. If you close a door to one room (e.g. a kitchen), then the easiest path available for the air may then be to travel through a dining room, for example.
Shoulder Season Use
You can also use the ACS for shorter periods of time during days where you might only need heating for the early evening to take the chill off the home.
For example, you may get home from work at 5pm and the house is a bit cold. You can turn the ACS on and see the roof temperature. If it is quite warm (say above 25 deg C) then you can simply leave that on until the house temperature is comfortable… you’ve heated the house by harvesting the free heat from the ceiling cavity.
Optional Modules Available
- Roof Heat Recovery Module – For accessing free solar gain in your roof cavity/void; bundled with 98% of all jobs.
- Window Condensation Control Module – For guaranteed eradication of persistent window condensation.
- Particulate Filter Intake – to improve the air quality within your home.
Circulate air to up to 8 rooms as a standard.
Considering a DIY project?
The HEG Air™ Transfer Kits can be varied by the customer and customised to your needs. We pride ourselves on superior products and services, but only if we do the installation. If you are still keen, then find out more.
