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Frequently Asked Questions

What sized unit do I need?

The size of the unit will depend on the size of the area you wish to heat or cool, and the type of unit you prefer.

What is a split system?

A split system is any unit that has an indoor and an outdoor component.

What types of split systems are there?

There are many types: wall mounted, floor mounted, ducted, ceiling concealed, bulk-head, ceiling cassette and low profile ducted.

What does reverse cycle mean?

A reverse cycle system is any system that provides heating and cooling. When a system runs on cooling, the compressor (outdoor unit) compresses the cool R410a refrigerants making them hot and then dissipates the heat from the compressed gases through a set of coils.

This coil cools the refrigerant and condenses these gases into a liquid which is sent through pipe-work to the indoor unit. Through this process the refrigerant then goes through an expansion valve which evaporates the liquid to become cold. This runs through the coils of the indoor unit, allowing the gas to absorb heat and cool down the home on the inside. The reverse of this process is done to provide heating, with a “reversing valve” that sends the refrigerants in the opposite direction.

What is an inverter?

To understand how an inverter works we first need to look at how a non-inverter works. A non-inverter uses electricity to turn on (starting current) and then uses a running current to keep the appliance running. Once a non-inverter reaches the desired or set temperature it switches off. It then uses the starting current (which costs more than the running current) to turn on when there is a drop of two degrees Celsius.

With a non-inverter you continually get a spike in the electricity consumption which makes these units inefficient. An inverter works much the same way – using a starting current and running current – but an inverter will only use the starting current once. After it then reaches the set temperature the unit doesn’t switch off, it modulates its condenser speed.

An inverter is reactive to one degree of the set temperature and by modulating itself to one degree instead of two this also means there is a smaller temperature difference. Imagine a car – if you slam on acceleration and then slam on the brakes this is going to use more fuel than if you slowly increased deceleration and then slowly decreased.

What is zoning?

Zoning is when you “zone off” one area of a home from another. It is recommended to zone off areas that are not commonly used as the system will then be more efficient to run. It is always recommended to have a continuous or “constant” zone which is always on, such as living areas which are not always as predictable in their usage.

What is a return air?

A return air is a filtered grill which takes the air from the home back to the indoor fan coil for the air to be conditioned back into the home.

Where should the return air be located?

The return air should be located in any common space (hallways, entry’s, living areas, etc). It should also be installed in any area that will always be receiving heating/cooling. It is important to always have a common outlet near a return air and for two storey homes, a low level return air should always be implemented in the design.

Do you offer installation?

Yes, we are a fully licensed plumbing company with the best refrigeration mechanics and plumbers trained and experienced in installing any unit in your home.

What sort of warranty do you offer?

We offer a six-year workmanship guarantee and a five-year parts and labour warranty.

Do you offer in home site inspections?

Yes, we can offer a convenient service where we will come to your home, measure and quote on the correct system to suit your needs.

Who does your installations?

We have our own experienced teams employed to install your system to the highest quality. All our team members are fully licensed.

What size pozi-struts (subfloor) do I need in my two storey build?

In a perfect world we would need 500mm-550mm, however we can work with a minimum of 400mm-450mm. It needs to be noted that with two storey homes you need to consider that there will be steel and plumbing in the way.

What is the difference between reverse cycle & evaporative cooling?

Daikin are a specialist manufacturer of reverse cycle systems providing the ability to climate control your home. Evaporative cooling is a process of cooling whereby a unit sits on the roof on a dropper box that goes into the ceiling cavity of your home. We duct off the dropper box to each outlet.

Evaporative cooling uses chill cell pads where water runs through these pads soaking them wet and the fan of the unit pulls in the external air through these chill cell pads and down into your home.
The process turns air into a vapour (a change of state is required for any change of temperature) which can cool the outside air temperature by an average of 15 degrees Celsius. The temperature change depends on the level of outside air humidity – the more moisture in the outside air, the less change of state and therefore change of temperature.

Can you change the temperature or get a thermostat with evaporative cooling?

No, evaporative cooling does not recycle the air in a home and therefore is not replacing the air inside. Instead it introduces new fresh air into the home. Because of this there is no temperature sensing for evaporative cooling allowing you to change or maintain a temperature. However you do have comfort levels which can adjust the strength of the fan of the unit. If it is too cold inside, simply turn the comfort level down (which will lower the velocity of the fan) or if you are too hot turn the comfort level up (this increases the velocity of the fan).

Can I zone evaporative cooling?

No, with evaporative cooling the idea is to have windows and doors open to allow for air to flow into the home and flush out the warm air. This creates a pressure barrier at exhaust areas so the warm air outside cannot get back inside. Because such a high velocity of air is required, if you were to zone evaporative cooling there is a high chance you would strip the cogs on a zone motor due to the air forcing its way past.

Can I run gas ducted heating and evaporative cooling through the same ducts?

No, outlet locations for gas ducted heating are above windows (to stop the cold coming in from the heat load source) whereas evaporative cooling outlets are located opposite windows to flush the air out across a room through an exhaust area. Also, the smallest outlet for a gas ducted heating system is 6” whereas the smallest for evaporative cooling is 12”. Evaporative cooling outlets are twice the size and require much more velocity than a GDH system.

Can I install evaporative cooling onto a flat roof?

No, a ceiling cavity is required to be able to run and house all of the ductwork and componentry.

How much space is required in my ceiling cavity for a reverse cycle heating and cooling system?

If you can access your roof cavity and crawl around, then more than likely we can install a reverse cycle ducted air conditioner in your home. This would be assessed and confirmed upon a site inspection.

Can I install a unit in my two storey home?

If it is an existing home we can install any system to the upstairs section of your home and can run ducts to downstairs, as long as you have void areas such as cupboards or en suites to run a duct down. Wherever the duct can run down is where the outlet would be located downstairs. If the home is at frame stage, then you can run duct work internally through the sub floor to various outlet locations (cavity void areas or “droppers” are still required).

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