FAQs'

  1. What is the difference between Air conditioning and Evaporative cooling?
  2. What is cheaper to run reverse cycle air conditioning or Gas heating?
  3. How much does it cost to run an air conditioning system?
  4. What is an Inverter?
  5. What is the most comfortable temperature?
  6. How was air conditioning invented?
  7. Can plants or shrubs be planted around an outdoor unit?
  8. What is the average life expectancy for an air conditioning unit?
  9. What is COP?
  10. What is EER?
  11. Can I catch legionella from my air conditioning?
  12. Do refrigerants harm the ozone layer?
  13. Are there filters that need to be changed in air conditioner?

1. What is the difference between Air conditioning andEvaporative cooling?

Evaporative cooling work's better on the dry day's (Low Humidity) and the temperature is controlled by the fan speed. on a dry day you would see approximately 10 to 15 degrees cooler than the outside temperature inside the house. On a humid day the evaporative cooler will have a decreased performance and have limited effect on cooling you home or business.

Reverse cycle Air Condition will not only cool your home or business but also heat your home and will be 50% cheaper to run than gas heating.  The other benefit of air conditioning it will work all year round keeping your home at a comfortable 22 degrees Celsius and giving you complete control of the temperature, humidity, and will also filter and purify the air.

2. What is cheaper to run reverse cycle air conditioningor Gas heating?

Reverse Cycle Ducted Air Conditioning is the most efficient from of heating on the market and is approximately 70% cheaper run than electric heating and approximately 50% cheaper to run than natural gas heating.

3. How much does it cost to run an air conditioning system?

The approximate cost to run a 2.5Kw split system air conditioner on cooling is 7₵ per hour and 10₵ per hour on heating.

The approximate cost to run a 15Kw ducted air conditioner that would be suitable for the average 3 bedroom home is 74₵ per hour on cooling and 79₵ per hour on heating. 

The above calculations have been calculated at the maximum power input and using electricity cost of 14₵ per kilowatt hour.

4. What is an Inverter?


An inverter air conditioner has a variable speed compressor that varies the capacity of the air conditioning unit also known as capacity control.  For example a 7kw inverter air conditioner is able varie its capacity from 1Kw all the way up to 7Kw depending on the load of the room. This improves comfort, running cost and also reduces wear on the compressor.

With fixed speed air conditioners the system will start and run at full capacity till the room temperature is at set point then turn off, and then turn back on after the room temperature rises by approximately 2 degrees Celsius and then repeat's the process.

With an inverter air conditioner the unit will match the load of the room to the capacity of the unit to try and maintain a the room temperature closest to set point as possible without turning off, this improves comfort because there is less fluctuation of the room temperature.

5. What is the most comfortable temperature?

The most comfortable temperature for most people is 22°c at 50% relative humidity. The only system that is able to maintain this temperature all year round is Air Conditioning.

6. How was air conditioning invented?

In 1902, only one year after Willis Haviland Carrier graduated from Cornell University with a Masters in Engineering, the first air (temperature and humidity) conditioning was in operation, making one Brooklyn printing plant owner very happy.
Fluctuations in heat and humidity in his plant had caused the dimensions of the printing paper to keep altering slightly, enough to ensure a misalignment of the coloured inks. The new air conditioning machine created a stable environment and aligned four-color printing became possible. All thanks to the new employee at the Buffalo Forge Company, who started on a salary of only $10.00 per week.

Cooling for human comfort, rather than industrial need, began in 1924, noted by the three centrifugal chillers installed in the J.L. Hudson Department Store in Detroit, Michigan. Shoppers flocked to the 'air conditioned' store. The boom in human cooling spread from the department stores to the movie theatres, most notably the Rivolitheatre in New York, whose summer film business skyrocketed when it heavily advertised the cool comfort. Demand increased for smaller units and residential air conditioning was born.

7. Can plants or shrubs be planted around an outdoor unit?

Yes, But ensure that the is enough room around the unit to ensure enough air flow approximately 50cm on each side and 1.5m in front of the air conditioning unit.

8. What is the average life expectancy for an air conditioning unit?

All air conditioning products that Monaro Air installs come with 5 year manufactures warranty and 5 year installation warranty and if serviced regularly by Monaro Air you should expect to get on average 10 to 15 years trouble free. And if serviced regularly and maintained by Monaro Air the life of the air conditioning system could be 20 years +

9. What is COP?

COP, or Coefficient of Performance, is the ratio of cooling (or heating) to energy consumption. For example, an air conditioner with a COP of 4 makes 4 watts of heat for every watt consumed.

For domestic heating, COP is also used. An electric heater has a COP of 1: each watt of power consumed produces 1 watt of heat. Air conditioners have COPs of 2-5, delivering 2 to 5 times more energy than they consume.

The higher the COP the more efficient the air conditioner.

10. What is EER?

EER or Energy Efficiency Ratio is the ratio of the cooling capacity of an air conditioner in Watts, to the total electrical input in watts under certain specified tests. Air conditioner EER ratings higher than 3 are considered more efficient. The higher the ratio the more efficient and the less the unit will cost to operate.

11. Can I catch legionella from my air conditioning?

No, legionella is not something you can contract from domestic air conditioning system.

12. Do refrigerants harm the ozone layer?

All refrigerants found in new air conditionings system are a HFC refrigerant and do not harm the ozone layer and do not contain chlorine,  chlorine is the additive found in CFC and HCFC refrigerants that are currently not used in any new air conditioning products imported into Australia.  All refrigerants are handled by competent and licenced tradesman and are not released into the atmosphere. The refrigerant will remain in the refrigeration unit for the life of the system as long as no leaks occur.

13. Are there filters that need to be changed in the air conditioner?

In all split system air conditioners there are filters that will need to be cleaned approximately every 3 months and will last for the lifetime of the system without the need for replacement.

In all ducted air conditioning systems the filters will need to be cleaned approximately every 3 months and replaced approximately every 3 years. If you are having your air conditioner regularly serviced by Monaro Air there will be no additional cost to replace the filter.
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