Should I Run the AC Unit 24/7?

As the weather begins to heat up, and certainly when we hit the peak heatwave period, we rely on our AC unit for comfort more than any other time of the year.

Sometimes we even leave the cooling on 24/7 during those intense heatwaves for precise temperature control.

Although it provides comfort, one question always lingers – should you run your air conditioning constantly in summer?

True, it keeps you cool, but is the unit actually more efficient, and designed for continuous operation in the extreme heat? The answer here depends on several factors.

Can Air Conditioning Keep on Running?

Air conditioning units typically run for 15-20 minutes before reaching the desired indoor temperature, then switch off and restart as needed. Inverter and reverse-cycle units manage this automatically. However, if you’re running older model split system ACs or portable AC units, they’ll likely keep running and lead to overcooling.

On extremely hot days that exceed 30°C, your cooling system may run non-stop. This is normal and, thankfully, won’t damage a well-maintained AC unit. However, running it 24/7 will drive up your electricity bills due to the constant need to counter the heat outside.

High demand during summer often leads to power outages. To avoid excessive bills, regular maintenance is essential, but extended use during heatwaves is inevitable for comfort.

Energy Efficiency and Affordability Tips

Many energy-efficient air conditioning units are designed to run at full capacity all day and night. Though doing this is safe, it’s important to maintain regular servicing, as running the system 24/7 generates more wear and tear.

Many people, and leading brands behind air conditioners, believe running your AC unit all day is the most efficient approach. This is because the unit will never have to work too hard at any given point to cool the home. The internal temperature will consistently hover around your thermostat settings.

However, if you’re concerned about the potential costs of running your air conditioning unit 24/7, you might want to consider some other factors.

1. Give Your Thermostat a Tweak

If your thermostat is set to “On”, it tells your unit to run constantly without turning off. Make sure it’s set to “Auto”, which tells it to turn off when it reaches the desired temperature. Along with that, make sure you haven’t got the temperature set unseasonably low.

You don’t want the unit struggling to maintain a chilly 15°C when it’s 30°C plus outside. And it does cost more to run an AC unit at a colder temperature. The home climate should be comfortable cool air, not freezing.

2. Get the Timing Right

Choosing to not run your air conditioning all day and night doesn’t mean you have to come home to a sauna. You can set your AC unit to kick in at a certain temperature to make sure your home never gets too hot while you’re not there.

You can also set a timer or use smart technology to turn your cooling on (or deliver warm air in winter) so it’s a pleasant climate when you arrive home.

3. Insulate Doors and Windows

There are other ways to make sure your air conditioning is working efficiently. Make sure your windows and doors are properly insulated. Hot and humid air will otherwise gradually seep into your home, forcing your air con to work harder.

Also be sure to properly close any doors and windows during cold or hot weather when you’re trying to keep the home at your desired temperature.

Another factor to keep in mind is that cooling units don’t like to compete with other heat sources such as boiling water, ovens, hair dryers, clothes dryers and sunlight. So, make sure you only use these appliances when necessary and keep those blinds closed.

4. Keep Your Air Filters Clean

Another simple way to make sure your unit is running efficiently is to clean or replace your air filters. A clogged air filter will interfere with the airflow inside your home.

Your AC unit will be forced to work harder to reach your desired temperature. And a dirty air filter is just not good for indoor air quality.

How often you change your air filter depends on several factors:

• Every three months for a home with no pets or family members with allergies or respiratory problems (e.g. asthma)
• Every two months for a home with one pet
• Every month for a home with more than one pet or a family member with allergies or respiratory problems.

This applies to a split system air conditioner as much as it does a ducted system, an evaporative cooler or a portable air conditioner. You might also ask the question: Do I have the right air conditioner for my situation? Is it achieving the most efficient cooling and heating levels for your space?

 

The Benefits of Regular AC Maintenance

Regular air conditioner maintenance offers numerous benefits to keep your indoor and outdoor units running efficiently. Here are some key advantages:

• Improved energy efficiency: Clean and well-tuned air conditioning units are more energy efficient and lower your bills while you keep your home cool.
• Extended lifespan: Maintenance helps catch issues early. It prolongs the life of your unit, whether you’re running split system air conditioners, a portable indoor unit, ducted AC, or an evaporative cooler.
• Better air quality: Clean filters and coils reduce pollutants and allergens, leaving you with healthier indoor air.
• Fewer breakdowns: Preventative maintenance lowers the risk of unexpected failures, especially during hot days.
• Consistent comfort: A well-maintained system ensures even cooling throughout your home.
• Warranty protection: Regular maintenance keeps your warranty valid, avoiding potential extra costs.

In short, regular AC maintenance improves the efficiency of your system. It extends your system’s life, and saves on unexpected repair costs—benefitting both your comfort and wallet.

Keep Your System in Top Shape

Whether you’re running split system air conditioners in single rooms, ducted air conditioning throughout the whole house, or just wheel in a portable AC unit from time to time, you need regular servicing to keep it in top condition. No matter how frequently you use it.

Most air conditioners will run efficiently if you have it running 24/7, and will not struggle to achieve your desired temperature. Just note that it will have a less-than-favourable impact on your electricity bills though.

The more practical solution might be to use a timer or smart technology with air conditioners. It’s also important to keep your system well-maintained and make sure your home is primed and ready for a potentially sweltering summer.

When you need professional advice on all things air conditioners, as well as maintenance, repairs or new air conditioner installation, contact the experts at Metropolitan Air Conditioning.

Please note: This information is provided for advice purposes only. Regulations differ from state to state, so please consult your local authorities or an industry professional before proceeding with any work. See our Terms & Conditions here.