Ducted Reverse Cycle

Reverse Cycle Split

Ducted Evaporative
   
 
 
 
What is Evaporative Airconditioning? And how does it work?

The evaporative process works on the principle of drawing warm outside air through moist filter pads. The pads are kept moist by having water flow over them. Through the process of evaporation the external hot air is cooled as it is drawn through the filter by means of a blower fan mounted inside a housing. This box/housing is normally placed at a high point on the outside of the roof from which a dropper duct drops through the roof into the ceiling void below. Insulated flexible ducts are connected to the base of the dropper duct and are extended to the various outlets as positioned. This allows for the cooled air to flow through the ceiling mounted outlet into each room.


Advantages

  • Introduces 100% fresh air into the home
  • Creates a positive pressure in the home while the system is running. Thus preventing external duct, pollen etc from finding its way into the home.
  • Low running costs
  • Initial purchase price about half the price of a reverse cycle ducted units

Disadvantages

  • Very dependant on the climatic conditions. The hotter and drier the weather is the better the system will work.
  • It introduces cool air at high volume with high moisture content. Thus the humidity levels will increase in the home in proportion to the ambient air humidity levels while the system is running. Under these conditions (high ambient humidity, lower sensible temperature) it has been known to cause timber floor boards to warp and to cause moisture damage to pictures hanging on walls. This system is not recommended for homes that have antiques and extensive timber flooring.
  • Can be unsightly from an aesthetic point of view.
  • Can be a security risk. Some windows need to be left open to release the high volume of air travelling through the home, normally the equivalent of 40 air changes in an hour. Thus some companies offer a security gill as an extra option to release the air into the ceiling void.