03 Oct 2023

Ways to save energy through efficient use of your AC

Want to learn ways to save energy when using your air conditioning? This article shares the best tips with you, so you can save and enjoy the comfort!

As the seasons change and temperatures rise or drop, ensuring comfort often leads to extended usage of AC equipment. This can have a significant impact on energy consumption. This article will explore ways to save energy by efficiently using your home’s air conditioner. By implementing simple strategies and making informed choices, homeowners can effectively manage their energy usage while maintaining optimal comfort.


We will discuss practical tips and techniques to maximise AC efficiency, reduce energy waste, and promote sustainability.


Signs your air conditioner is wasting energy

Several signs can indicate your air conditioner may be wasting energy:

  • High Utility Bills: one of the most noticeable symptoms you may perceive is receiving higher utility bills, as excessive energy consumption can increase costs. If your electric bill shows a significant energy usage spike, it may indicate that your cooling system is inefficient.

  • HVAC running longer than usual: another sign to look out for is noticing that your HVAC cycles are longer than usual. This could imply efficiency issues that can lead to unnecessary energy expenditure. Common causes for abnormal AC cycles include clogged air filters, which restrict airflow and make the AC work harder; dirty evaporator coils that reduce cooling efficiency and may cause the AC to blow warm air; clogged or leaky vents that disrupt proper airflow; thermostat issues leading to incorrect temperature readings, low refrigerant levels resulting from leaks, and incorrect AC sizes that either struggle to cool large spaces or waste energy in small areas.

  • Inconsistent temperatures: Lastly, if you notice inconsistent temperatures in a particular room, with certain areas feeling warmer than others, it may suggest that your air conditioner is not effectively cooling that specific space.


Poor indoor air quality is another indicator of energy waste, as an inefficient AC may struggle to circulate air and maintain proper home humidity levels. By paying attention to these signs, you can identify potential problems and take the necessary steps to address them, improving energy efficiency and comfort.


How to use your air conditioner efficiently to boost energy savings

You can implement several strategies for the best way to save energy with AC and boost energy savings. One effective method is increasing or decreasing the temperature, depending on the weather outside, by a couple of degrees using your AC's remote or home's thermostat, which can lead to significant savings over time. Proper installation and regular maintenance, such as replacing and cleaning filters, can also enhance efficiency and reduce energy waste. Additionally, you can consider programming your AC, particularly when you're away from home, to set higher temperatures during those periods. AirCloud Go offers flexibility in managing temperature settings based on your schedule.


To further optimise energy efficiency, keep blinds or shades closed during the hottest parts of the day and minimise the use of heat-generating appliances like ovens and dryers. Utilising ceiling fans in occupied rooms can also provide comfort while allowing you to keep the thermostat at a slightly higher temperature.


Incorporating these and other practices into your AC usage can maximise energy savings and reduce your carbon footprint.



Keep your air conditioner device prepared for any weather.

Keeping your air conditioner prepared for any weather is essential for optimal performance. Regular air con maintenance, such as cleaning or replacing filters, checking for leaks or damage, and ensuring proper insulation, can go a long way in keeping your AC running smoothly. Adjusting temperature settings based on weather conditions can help maintain a comfortable indoor temperature while conserving energy. To do so, it is important to understand how to prepare your air conditioner for any weather.


Regulate the air conditioner temperature as a way to save energy

Regulating the air conditioner temperature is vital for saving energy and promoting efficiency. During the summer months, it is generally recommended by ASHRAE to set your air conditioner temperature between 22ºC and 27ºC (72ºF-80ºF) to strike a balance between comfort and energy efficiency. In winter, adjusting the AC temperature to around 20ºC to 23ºC (68ºF-74ºF) helps reduce the strain on your air conditioner and minimises energy consumption while ensuring a comfortable indoor environment. However, it is important to check local recommendations, as the standards may vary depending on the region.



Programming your air conditioner to help save energy

When the air conditioner runs constantly, your home becomes a heat magnet, leading to increased cooling processes and higher energy consumption. To use your air conditioner efficiently and boost savings, you can program your AC using airCloud Go, and consider implementing these aircon energy-saving tips:


Best ways to save energy by efficiently using AC controls and timers

To maximise energy savings and optimise your AC usage, optimal use of AC controls and timers is crucial. One of the best ways to save energy is by programming your AC based on peak and off-peak hours. You can regulate your home's temperature and AC airflow by aligning the programming with peak occupation periods and considering peak energy costs. You can significantly reduce energy usage and lower utility bills by utilising air-con controls and timers wisely.



How to use energy-saving features on your aircon

Hitachi Air conditioners, specifically the new airHome range, offer a range of energy-saving features designed to promote efficiency and reduce power consumption.

The Smart Eco system is one of these features, as it detects human presence and absence in a room and automatically adjusts the power settings accordingly. By avoiding unnecessary cooling in unoccupied spaces, this technology helps minimise energy waste.

Another notable feature is SleepSense technology, which optimises temperature control during sleep to prevent the room from becoming excessively hot or cold. By maintaining a comfortable sleeping environment, SleepSense technology reduces energy usage that would otherwise be wasted on excessive cooling or heating.


 Woman Using Smart Remote for AC Unit as a way to save energy


Physical factors that might help in ways to save energy 

Considering physical factors in your environment can play a significant role when saving energy. Factors such as humidity levels, furniture layout or shading windows and investing in insulation could help reduce your air conditioner's workload. By addressing these physical factors, you can maximise energy savings and enhance the performance of your AC system.


How humidity affects AC energy saving

House humidity levels play a crucial role in how to save electricity with your AC. According to ASHRAE, a general recommendation is to maintain a relative humidity range of 20% to 80%. However, in environments with high humidity (where copper and silver corrosion is evident), keeping the upper moisture level below 60% RH, potentially even lower than 50%, is advised. By controlling humidity levels within these recommended ranges, you can optimise the efficiency of your air conditioning system and promote energy savings.


How your furniture layout can be blocking your air conditioner airflow

It's important to be mindful of where you place your furniture in a room. Positioning a large chair or couch near an air vent can obstruct the free flow of air from the duct. Similarly, avoid placing area rugs over floor vents, which can impede the airflow. Ensure that all furniture, artwork, and decor elements are positioned to allow your vents to provide an unobstructed and effective air current. By optimising the furniture layout, you can enhance the airflow and maximise the efficiency of your air conditioner.


Wall-mounted air conditioners can be susceptible to performance issues due to poor furniture placement, such as wardrobes, or when installed in inadequately chosen wall sections. These factors can impede the airflow, obstruct proper ventilation, and ultimately undermine the efficiency and effectiveness of the air conditioning unit. Therefore, it is crucial to carefully consider the positioning and installation of these units to ensure optimal functioning and to prevent any potential hindrances caused by unfavourable furniture arrangements or inappropriate wall placement.


Woman saving money on Air Conditioning in her apartment


Managing heat-generating appliances to improve AC efficiency

Heat-producing appliances such as ovens, stoves, dryers, and even incandescent light bulbs can significantly contribute to the heat load in your home. Using these appliances during cooler times of the day or limiting their use altogether can reduce the overall heat generated in your space. Additionally, considering energy-efficient alternatives such as LED lights and appliances can help reduce the heat output and relieve the workload on your air conditioner.


How shading and insulation can help to reduce the air conditioner workload


Proper shading of windows can prevent direct sunlight from entering your home, reducing the heat that needs to be cooled. Moreover, effective insulation helps minimise heat transfer between indoor and outdoor spaces, resulting in more stable temperatures and reducing the strain on your AC system.



Ways to save energy in different types of home

There are various ways to reduce air conditioning bills while saving energy in different homes. Whether you live in an apartment, a multiple-room house, or have a central AC system, knowing the best way to save energy with AC is essential.


How to save money on air conditioning in an apartment

There are a few easy ways to save money on AC in your apartment:

  • Use your ceiling fan and set it at high speed counterclockwise to push cool air down.

  • Keep up with air filter changes for optimal airflow.

  • Give your oven a break and use alternative cooking methods that are less heat-intensive.

  • Be reasonable with the air conditioner by setting it to a  slightly higher temperature and using a programmable timer.

  • Strategically open and close blinds to regulate sunlight. Opt for cotton bedding and take advantage of outdoor spaces to stay cool.


How to save energy in multiple-room house settings

To conserve energy in homes with multiple rooms, there are several steps you can take.

  1. Consider using zone-based heating and cooling to only condition the rooms in use. This allows you to save energy by avoiding unnecessary cooling or heating in unoccupied areas.

  2. Close doors and seal gaps or leaks to prevent conditioned air from escaping.

  3. Utilise natural light during the day by opening curtains or blinds and switching to energy-efficient lighting options.


How to save electricity with central AC

To save energy with a central AC system, also referred to as a ducted AC system, there are some strategies you can implement to help save electricity:

  • Zone cooling: Use dampers to cool specific areas of your home instead of the entire house. This way, you can focus cooling efforts only in the occupied rooms, reducing energy waste.

  • Use natural ventilation: Use cooler evenings and nights by turning off the AC and opening windows to let fresh air in. This natural ventilation can help cool your home without relying solely on the AC.

  • Regularly clean and maintain the system: Clean or replace air filters regularly to ensure proper airflow and efficiency. Also, schedule professional maintenance to keep the central AC system in top shape, improving its energy-saving capabilities.


Saving energy and improving your health with smart air-conditioning

Smart air-conditioning systems offer a range of benefits, including energy savings and improved health. With sensors that detect human presence, these systems can optimize cooling based on occupancy, preventing wasteful energy consumption. Additionally, FrostWash technology helps maintain cleaner air inside by removing dirt and impurities from the AC unit, improving air quality. By using airCloud Go, you can conveniently control your AC settings remotely, ensuring that you arrive home to a comfortable and efficiently cooled environment. These smart features enhance energy efficiency and contribute to a healthier living environment.


Man taking care of plants in perfect house humidty conditions thanks to Hitachi AC. 

Inspecting the dirt in the aircon filters

Ensuring the cleanliness of aircon filters is vital for maximizing air conditioner performance. Over time, dust and debris accumulate in the filters, obstructing airflow and reducing the unit's efficiency. Regularly inspecting and cleaning the filters ensures that air can flow freely, improving cooling effectiveness and preventing strain on the system. In addition, clean filters help maintain indoor air quality by trapping airborne particles such as dust, pollen, and allergens. By paying attention to the dirt in the aircon filters, you can enhance your air conditioning system's overall efficiency and effectiveness.


Why is it important to clean AC filters to save energy?

Regularly cleaning AC filters is of utmost importance when saving energy. A dirty filter can significantly impact the performance of your air conditioner. It restricts airflow, reducing cooling or heating efficiency and increasing energy consumption. Moreover, clogged filters can result in inconsistent temperatures and compromised air quality, as dust, grime, and mould particles contaminate the air. This not only affects your comfort but also poses potential health risks. Also, neglecting filter cleaning can shorten the lifespan of your unit, leading to breakdowns and costly repairs. By maintaining clean filters, you can ensure optimal energy efficiency, improve air quality, and extend the longevity of your air conditioning system.


Are Indoor Air Quality (IAQ) and air conditioning efficiency linked?


Yes, indoor air quality (IAQ) and air conditioning efficiency are closely linked. An air conditioning system's performance directly affects the air quality circulating indoors. An efficiently functioning AC system can help remove pollutants, allergens, and odours from the air, improving IAQ. On the other hand, a poorly maintained or inefficient AC system may fail to filter the air effectively, leading to poor IAQ and potential health issues. An inadequate IAQ can also be caused by dirty or clogged filters, which is a symptom leading to inefficient energy use. Regular maintenance, including cleaning those filters and ducts, ensures energy efficiency and optimal indoor air quality.


How can Hitachi products help you to save energy?

Hitachi air conditioners incorporate energy-saving features and technologies to help users. For example, smart sensors detect human presence, allowing the system to adjust power consumption accordingly. Technologies like FrostWash help keep the AC cleaner inside, improving air quality and system efficiency. Hitachi also offers solutions like airCloud Go, enabling users to remotely control and monitor their AC, ensuring efficient temperature management and energy savings. Through these innovative features, Hitachi products aim to provide energy-efficient solutions that help reduce environmental impact and save on energy costs.


ꟷ Hitachi Cooling & Heating Australia ꟷ
03 Oct 2023