1. Turn it off , however we have air conditioning to make us feel comfortable so here are some ideas to help minimise your electricity usage.
2. Check the air conditioner’s filters are clean.

   Air Con Filter Maintenance Ducted

   Air Con Filter Maintenance Wall Split

3. On very hot days you can try turning on your system early in the day before the room gets hot, this way your air conditioner won’t need to work as hard to reach the set temperature. The timer function on modern technology will allow you to set the timer for on/off times.

   ‘Each degree Celsius can reduce or increase running costs between 10 and 15 percent. If you set your thermostat at 23 degrees Celsius, your house may be comfortably cool, but it will still be comfortable at 25 degrees and you will be reducing your running costs 20 to 30 percent.’ (Independent Pricing and Regulatory Tribunal, 2016 http://www.ipart.nsw.gov.au )

4. You can save on the amount of energy consumed by setting the temperature 1-20 °C higher for cooling and 1-20 °C lower for heating. For example if the outside temperature is 38 °C, you might set your AC for 25 °C rather than the suggested 22-23 °C. This way your air conditioner doesn’t have to work as hard and use as much energy to reach its set point, saving you dollars.
5. Only cool/heat the rooms you're actually using:  close off cooled/heated area by closing doors, switch zone settings on/off on ducted systems, and use the fan-only mode as a cooling option.
6. Wear temperature appropriate clothing – light and cool in Summer and warm woolies in the Winter.
7. Optimise the energy-efficiency of your dwelling with ceiling and wall insulation and draught-proofing windows and doors.
8. Closing curtains and blinds, window tints, double-glazing, closing /opening outside shutters can all help to reduce costs.

Multi-directional outlet diffusers allow you to adjust the air direction and flow of the air.

The ceiling outlet is comprised of 4-6 smaller squares called ‘cores’. There are 2 main types of cores – fixed and adjustable.

1. An adjustable core allows the user to direct air-flow by turning the blades a particular ‘way’ to direct air-flow in that direction.
2. A fixed core only allows for the cores themselves to be rotated to gain direct air flow. To adjust the outlet, simply push up on each of the four segments one at a time, and rotate each of them in desired direction for air-flow.

If it’s a unit we supplied contact us. Otherwise Google your AC brand and model on the internet. The model number may be found on the wall controller or look at the outdoor unit you may find a label on the side.

Comfort is subjective and varies widely from person to person, but there is a generally accepted range of temperatures where approximately 80% of people feel comfortable and the system will perform effectively and efficiently. Finding the best temperature setting is all about operating your AC to acquire the balance between comfort and efficiency of the system.

The National Occupational Health and Safety Commission advises that in winter wearing heavy clothes a comfortable temperature is 20 - 24 °C, whilst in the summer, wearing light clothes, 23 - 26 °C is more comfortable.

The Australian Standard AS 1837 Code of Practice for Application of Ergonomics to Factory and Office Work recommends a temperature range of 21 – 24 °C.

Heating systems take around 4-10 minutes to commence blowing warm air. The system is trying to heat up and will commence blowing warm air once the indoor coil is hot. This is called a ‘pre-heat cycle’.

Its highly likely that it has a built in time delay, and will start up in around 4-10 minutes.

This commonly occurs when the machine is in defrost mode. Heat pumps (outdoor units) can get frosty when they are running on heat mode. It doesn’t happen often but the technology is trying to extract heat from cold outdoor air

When the outdoor coil temperature goes below dew point, moisture results and if the outside ambient temperature is very low the moisture on the heat exchanger will freeze. A correctly operating air conditioner will recognise this and initiate a defrost cycle before it ices-up completely.

So, there is nothing wrong, air conditioners come with a built-in defrost system. Leave it for up to 20 minutes to enable it to complete its cycle so it can run smoothly again.

1. Evaporative ACs are most effective on dry hot days, and considerably less effective on days that are hot and humid. Relative humidity plays a large role in determining our comfort. For example if the relative humidity is 100%, this means that water will not evaporate - the air is already saturated. Our bodies perspire and rely on the evaporation of moisture from the skin for cooling, and the lower the relative humidity is the easier it is for moisture to evaporate, making us feel cooler. On muggy days humidity levels are very high and evaporative ACs will have little cooling effect beyond increasing air movement and overall ventilation. Source: Australian Business Review, Climate Spectator Pty Ltd: Why evaporative cooling is bad for energy efficient homes, 2016)
2. Evaporative ACs are considered effective when the outdoor air relative humidity is below 30%, reasonably effective between 30-50% and above 50% humidity a Refrigerative AC is suggested. The relative humidity is the difference between 2 mercury thermometers, one exposed to normal air (dry bulb) and the other wrapped in a wet wick (wet bulb).
3. The Evaporative AC cooling potential is dependent on the difference between dry-bulb temperature and wet-bulb temperature. At 100% relative humidity, the wet-bulb temperature equals the dry-bulb temperature. Evaporative cooling system can be very successful if properly designed up to a wet bulb temperature of 22 degrees Celcius, and it can also be used in more humid areas (up to 24-25 °C) wet bulb, however the number of days where it is uncomfortable is considerably increased.

When the relative humidity is 100%, we feel much hotter than the actual temperature indicates because our sweat does not evaporate at all. This is known as: ‘The Feels Like Temperature’, If the relative humidity is low, we feel cooler than the actual temperature because our sweat evaporates easily; we can also feel extremely dry.

The chart below lists an index to demonstrate how hot a given temperature will feel to us in various relative/humidity levels.

• This is usually due to insufficient ventilation. Evaporative air conditioners require windows and doors to be left open if it is to work effectively, as it allows the hot air to escape outside.
• As relative humidity increases the effectiveness of an Evaporative Air Conditioner is considerably reduced.

There are 2 modes in the Evaporative Air Conditioner – 1) Cooling and 2) Fan/Ventilation for fresh circulating air. Some Evaporative ACs have automatic functions whiles others just have manual. The following is a general guide for most brands, for specific information about your AC please refer to the owners manual.

In the auto mode the fan will increase and decrease to acquire the desired temperature. If the temperature increases at the wall control, then the fan speed will increase, and likewise as the temperature decreases the fan speed will decrease until the cooler turns off. Being on a cooling setting, the fan is running, and the pump will also be saturating the pads allowing for a cooling effect.

In the manual mode the fan speed is selected by the user. Once a speed is determined it will stay at that setting until changed or turned off. Being on a cooling setting, the fan is running and the pump will also be saturating the pads allowing for a cooling effect.

The automatic fan mode will only run the fan without the pump and will self-alter in speed according to the temperature sensed at the controller, due to the automatic setting. When ‘vent’ is displayed, fresh air circulates through the conditioned area.

The manual fan mode will only run the fan without the pump and will maintain the speed that has been set by the user or until it is changed or turned off. When ‘vent’ is displayed fresh air circulates through the conditioned area.

Yes. Depending on your skill level and knowledge about your air conditioner unit and system, you may be able to repair it yourself OR you can call out a manufacturer approved service technician. Some repairs will require spare parts and you may need to check if they are in stock, and if not their availability. Note: electrical and refrigeration licenses may be required for certain repairs.

Check the list of Joe Cools Youtube videos and information sheets, as these may be able to assist you.

Ducted disposable filters should be replaced between 3-6 months this may be between 9-12 months depending on your usage of the system.

Ducted reusable filters are recommended to be replaced every 1-2 years.

Wall Splits have filters that should last the life of the air conditioner if maintained correctly.

Filters and filter media are available from:

Maintaining Your Air Conditioner

Air Conditioner Filter Maintenance Ducted

Air Conditioner Filter Repair Ducted

If you clean the filter regularly your system should run well. If you strike any faults contact the manufacturer’s service agent. Maintaining Your Air Conditioner

The following is a method to test that each zone fully opens and fully closes.

• Turn all zones off except one.
• Place the AC unit on fan mode so the air-flow is continuous.
• Listen for the sound of the air-flow coming out of the zone’s vent (eg zone 1) ensuring that it is fully open.
• Turn on zone 2 to test that it fully opens and then turn off zone 1 to test that it fully closes.
• Repeat this process to test all zones one at a time.
• If you are unable to hear the air-flow through the vent, attach a tissue at the end of a broomstick and place it near the ceiling vent to confirm whether or not air-flow is apparent by the movement of the tissue.

Some plastic vents can be cleaned in the dishwasher by placing them in the top rack and select a gentle low temperature setting or in warm soapy water. They may also be cleaned with a brush-head attachment of the vacuum cleaner then gently wiped with a micro-fibre cloth afterwards.

• Check the air conditioner’s filters are clean.

  Air Con Filter Maintenance Ducted, Air Con Filter Maintenance Wall Split.

• Check the indoor air handler (ceiling unit) is free of obstructions.
• Check there aren’t any leaks in the ductwork.
• Is the fan-motor running?
• Is the return air-grille obstructed?
• If the system has motorized zone motor control check they are operating correctly.

Yes. The tool required to repair the damaged fins is a ‘AC Fin Comb’ commonly and cheaply available for purchase on Ebay.

• Check the air conditioner’s filters are clean.

  Air Con Filter Maintenance Ducted, Air Con Filter Maintenance Wall Split.

• Ensure zone motors are functioning correctly.
• Is the temperature and mode on the controller set appropriately?
• Check that all ductwork is intact in the ceiling space.
• Be sure to close your home's windows and outside doors, unless you have an evaporative air conditioner. Isolate any areas that are not to be air conditioned from the rest of your home to maximise efficiency.
• Take a look at the outdoor unit, ensure it is clear and nothing is obstructing the air-flow.
• Most modern air conditioning units will display an ‘error code’ if a fault occurs on the control panel – reset air conditioner if problem persists and check your owner’s manual.

• New reverse cycle air conditioners and ductwork quite often have a subtle odour. If the system is new the odour will dissipate quickly.
• Evaporative air conditioners by nature have a distinctive odour, however regular maintenance can help manage this. If desired you can deodorise and disinfect with pineocleen or similar products are available from: Air Diffusion Agency and Heatcraft.
• Check if the filters are clean. These videos show how to check your filters: Air Con Filter Maintenance Ducted and Air Con Filter Maintenance Wall Split.
• Check if the indoor coil is clean, free of dirt and dust.
• Check inside the unit and ductwork with a torch to see if a rodent has climbed in and died.

Generally manufacturers recommend servicing evaporative cooling systems once or twice a year – at the end of the summer and in preparation before the next summer starts. Some models have a ‘no seasonal maintenance’ feature and do not need annual or end of season cleaning, but they will still require routine checks particularly if they are operating under harsh conditions.

The recommended maintenance process is outlined in the Owners Manual. If you strike any faults or do not feel comfortable performing the maintenance, contact the manufacturer’s service agent.

Servicing your Evaporative AC is relatively easy and uncomplicated to undertake. However because your cooler is mounted on the roof, it can be hazardous as it requires some skill, knowledge and qualification about working at heights. If you are unsure, contact the manufacturer’s service agent for assistance.

Steps to help you maintain your evaporative AC are:

• Isolate power to the Evaporative AC unit.
• Using a brush loosen any residue, calcium build-up and slime.
• Pull out the sump dump and drain water from the unit’s tank and pipes.
• Wipe the inside of the tank, pump and flush with clean water. With all evaporative coolers always make sure the water supply is clean and fresh.
• Remove filter pads, hose clean and allow to dry.
• Dry the internal parts, leaving drains open and fit covers to exposed units if required.
• Check the control board and motor are in good working order.
• Utilise your external weatherproof cover if you have one.

* NOTE: AC service agents can provide cleaning and maintenance.

• Isolate power to the Evaporative AC unit.
• Remove the external weatherproof cover.
• Remove the filter pads, ensure they are cleaned thoroughly with a hose and replaced with new filters (if required).
• Clean waterways, the bleed-off system and sump.
• Close off drains if required and fill with fresh clean water.
• If desired you can deodorise and disinfect the unit.

*Warning: failure to replace filter pads when they are past their useful-life may result in reduced efficiency and poor performance of the air conditioner or water carryover into ductwork and/or electrics resulting in expensive damage.

Yes. ‘Pipelagging Self Seal Insulation’ is available from your local refrigeration or plumbing wholesaler. It is self-sealing and is easy and quick to install.

Before proceeding with a potential costly repair it’s a good idea to obtain a quote as it could be more economical to replace it. Consider the following:

After a period of time the system may become expensive to repair and break down more often. If your repair costs are significant, keep in mind that a new unit will come with up to a 5 year manufacturer’s warranty. Replacement parts and refrigerant gases are discontinued and phased out, which will cause them to be more expensive if not completely unavailable.

The technology in Air Conditioning units are constantly evolving, resulting in reduced running costs.

The Australian Government and the Australian Refrigeration Council (ARC) have mandated the phase-out of R-22 refrigerant in 2016, in an effort to protect the ozone. Upgrading to a modern refrigerant or air conditioning system not only helps the environment, it helps you avoid the high costs of repairing an older system as supplies of R-22 are further cut each year driving the purchase price of the gas up. If you are unsure what refrigerant your AC is using, refer to the sticker on the outdoor unit, the owner’s manual or ask the manufacturer for the model number.

If your current air conditioning system can’t handle the demands on its performance during the hottest and coldest times of the year, or has broken down multiple times over the past several years, repairs may not be in your best interest. It may be costing you more than investing in a new system. Modern air conditioning technology can save you money as it requires less energy to heat and cool.

When replacing an old ducted reverse cycle air conditioner – some ductwork, grilles, pipework, zoning system and electrical supply may not need replacing - reducing your costs.

In a change-over from an evaporative AC to a ducted reverse cycle AC there is reduced compatibility of components. However there are ceiling penetrations that may be able to be reused rather than being repaired, patched and new ones cut.

When replacing an old evaporative air conditioner – the dropper box, ducting, vents and electrical supply may be in good condition, which can substantially save on replacement costs.

Ask us what savings you may be able to make.

No. Home Air Conditioning units should never need to be re-gassed if they are installed correctly.

A car’s Air Conditioning pipework and connections are slightly porous and will naturally lose gas over time. Reverse cycle air conditioners are different to car air conditioners as they are closed continuous systems, therefore gas should not leak out for the entire life of the unit.

The following is an easy test to identify which zones control which rooms:

• Turn all zones off except one.
• Place the AC unit on fan mode so the air-flow is continuous.
• Listen for the sound of the air-flow coming out of the zone’s vent (eg zone 1) ensuring that it is fully open.
• Turn on zone 2 to test that it fully opens and then turn off zone 1 to test that it fully closes.
• Repeat this process to test all zones one at a time.
• If you are unable to hear the air-flow through the vent, attach a tissue at the end of a broomstick and place it near the ceiling vent to confirm whether or not air-flow is apparent by the movement of the tissue.

• Utilise the zone motors to help control the temperature - with conventional zone motors the temperature may be controlled with the on-off switch of the zoned area.
• Some rooms may have a different heat loads at different times of the day especially if there are large windows that receive a lot of sun in the morning and/or afternoon. Shades, awnings, shutters, curtains or blinds may be of assistance.
• Having more people in the room or appliances changes the internal heat load for the air conditioner and it may not be able to maintain its usual temperature set point.
• There may be an air balance issue where the amount of air received in particular rooms needs altering. There are air conditioning systems available on the market that allow the user to modify the amount of air in each room being received from a simple wall controller or a manually adjustable dampening blade can be installed into the duct system.

• If water is coming from an undesired location further investigation is required.

  Until the fault is diagnosed and rectified, for reverse cycle units isolate the electrical supply to the unit.

  For evaporative air conditioners isolate the electrical and water supply to the unit.

• Is it a roof leak? Has it been raining recently? Do you live in a multileveled residence and have water pipes running above your ceiling? Perhaps a burst hot water system in the ceiling space?
• This may also be due to a blockage in the condensate drain.How to fix Air Con Leaking Water.
• Check the air conditioner’s filters are clean.

  Air Con Filter Maintenance Ducted, Air Con Filter Maintenance Wall Split

Absolutely not. Do not put a cover over the unit. They are designed to operate outside in the open air. However in extreme environments such as the beach-front, it may be beneficial to shield the unit from weather coming directly in from the sea as it may reduce corrosion from salt spray.

Many air conditioners are covered with tarpaulins or large bags during the winter months. Evaporative AC covers are designed to protect Evaporative AC units from the harsh conditions of the weather, water, dirt, dust, leaves and other outside debris. They are usually made of heavy durable UV tolerant fabric and easy to slip on and off. Not all Evaporative units require you to climb onto the roof to slip on an external cover, some seal off automatically every time the unit is turned off. Check with the brand manufacturer if you are unsure.

Short-term solution - Most wall split ACs have an on-off switch on the indoor unit, which allows for basic operation without a remote controller.

Longer-term solution – A universal remote control may be a more affordable solution than purchasing a brand named one. These are commonly available from online shopping sites such as Ebay.

At Joe Cools we replace many old air conditioning units that are past their use by date however, the remote controllers are still in good condition. We keep all the remote controllers from our change overs so give us a call and we may have a second-hand compatible replacement for your unit, free of charge.