Friday, 20 November 2015

Ducted reverse cycle air conditioning buying guide

Cozy in winter, cool in summer season

Turning your whole residence into an integrated, mean-lean-cooling-and-heating device is the ultimate in weather-defying comfort - great air for the kids playing Wii tennis in the Television Room, something a little balmier for after-dinner threads in the living area, a cosy warmth welcoming you to bed ... However the expense, initiative and interruption involved ways ducted A/C installment is not to be taken on gently, and you actually need to do your study! Looking for our air-conditioner reviews? We have actually assessed reverse-cycle ac system to help you discover the very best brand to purchase.

Is it worth the money?

Before you spend thousands of dollars to have a system set up (and also numerous hundred budgets a year to run it), think about other cooling and also home heating choices making sure it's worth it. Even if you pick a central system, you might just need a cooling-only or heating-only version (relying on the environment where you live). And, just like all our heating and cooling guides, we highly advise you to optimise your residence's energy performance prior to diving into this procedure. For info on ways to do this, consisting of pointers on insulation and draught-proofing, have a look at our extensive guide.

Where's the OPTION examination of ducted systems?

If you decide to mount a central system, the appropriate dimension and also layout depend upon a range of specifications and also have to be established by the distributor for your specific scenario. Central systems shouldn't be gotten "off-the-shelf"-- which is why we don't check ducted systems. The results would only stand for the tested scenario (which could be extremely various from your house) and also a design that carries out well in our test circumstance can still disappoint you if it's not created according to your demands.

So just what does 'reverse pattern' in fact mean?

Ac unit deal with the warmth pump principle. As the name recommends, they pump heat from one area to another. Enable us to get a little scientific right here, as we discuss how warmth pumps work
  • The cooling agent, heated from the hot air, evaporates as well as streams into a compressor, which develops a high-pressure, heat gas.
  • A fan attracts warm air from your residence over a chilly liquid, called a refrigerant. Heat is soaked up from the air, cooling it. The air after that flows back right into your house.
  • The gas is pumped through a heat exchanger outside your residence, which permits warmth to run away and also the cooling agent to cool and melt again.
  • The refrigerant streams with an expansion device that lowers its pressure, cooling it even more, so it can absorb heat once again.
  • Reverse-cycle ac unit, as the name recommends, can reverse this procedure as well as be used for both air conditioning and also home heating.
Choosing a system If you're aiming to put a brand new ducted system in an alreadying existing house (rather than integrating it right into a brand-new construct), you'll need to consider a great deal of details regarding the structure, throughout. You need to have all the following information before you begin looking around for quotes or designs:
  • The type of construction (as an example, weatherboard or complete brick).
  • Your house's layout: The amount of levels are there? What are the measurements of the areas (consisting of ceiling height)? Which instructions do the rooms face?
  • The dimension, location and also positioning of doors and windows.
  • The degree of insulation.
  • The variety of individuals living in your house.
  • The major usage of each area (for example, resting, living, food preparation).
  • The ceiling dental caries area - slimline systems are readily available for homes with tiny ceiling rooms.
  • The constraints of your outside rooms - equally as with split system a/c, the exterior compressor system(s) has to be installed somewhere where sound will not be a concern (for you or your neighbours!).
  • Big systems may need a three-phase electrical supply, which will certainly be an extra setup cost if you don't already have it.


There are several layout attributes to consider. A vendor could be able to offer a variety of options, depending upon the style and also needs of your residence.
  • Controls are typically hard-wired and also placed on a wall surface, unlike the remote controls made use of for solitary split-systems. You might have one controller for the whole system, but in a large residence you may go with additional controllers in other components of the house for more benefit.
  • Vents can be found in a range of styles as well as could be installed in the ceiling or wall surfaces.
  • Sensing units are used by the controller to keep the space at the targeted temperature level. Huge open-plan locations might require multiple sensors.
  • The majority of systems permit a home to be split into areas for benefit and also economic situation, to ensure that you could activate the air-con for only the component of the house you want cooled or heated (for instance, living locations throughout the day and also bedrooms after 10pm, or different flooring) as opposed to the whole house. Or, you could set various environment levels for various locations as called for.

Duct And Cover

The ducting is an essential element of the system. ductwork need to be thermally efficient so that beneficial cooling or heating isn't shed travelling between the air conditioning system device and the target area. The ducting market association, ADMA, is concerned that some vendors are mounting substandard ducting, and suggests that consumers get in touch with their installer that the ducting satisfies the Australian specification for ductwork, AS 4254. Inspect the tags on the ducts or get a created declaration of compliance to create certain you get the best quality of ducting.

Are they energy effective?

Modern a/c unit are really efficient - for each kW of electrical energy taken in, 3 or even more kW of heating or cooling storage capacity could be generated. Window and also split-system versions have to bring an energy ranking tag (the star-rating system). Ducted systems have to fulfill minimal energy efficiency requirements, yet don't carry the energy score tag. Take a look at the federal government's energy score site for more info.

Just how much will it cost to acquire and run?

You'll be hard-pressed to buy a ducted reverse Air Conditioning system for much less than $5000 (including installation), and the cost could effortlessly get to twice that quantity (or even more), depending on the dimension and type of system you choose.
The running prices mostly rely on:
  • The kind and dimension of your system
  • The energy effectiveness of your system
  • The moment you're operating the system for
  • The building of your residence (layout, level of insulation, dimension of windows, and so on).
  • The electricity tariff you're paying.
  • The temperature level you select on the thermostat: each degree Celsius lower/cooler you establish it to in summertime, and each level higher/warmer in wintertime, will certainly raise the running prices by 10-15 %. We understand it's appealing to combat Nature by blasting it, particularly when you have actually simply been available in from outdoors feeling fried or frostbitten, yet the best point to do is to discover the temperature you're merely comfy with-- attempt 25 levels in summer season, and also 20 degrees in winter season.

Decreasing your costs.

By complying with some very easy policies in day-to-day procedure, you can additionally reduce running costs:
  • Shade your home windows during warm summer season days (to keep the warmth out) as well as during cold nights (to keep the heat in).
  • Close all external doors and windows when your system is running.
  • When you expect a very hot day, activate the air conditioning system early, instead of waiting until your residence is very hot. Similarly, start warming early when getting a chilly day.