Can We Save Energy By Switching To Aircon Fan Mode? (Updated)

If you live in Singapore, your air conditioner is likely one of the biggest contributors to your monthly electricity bill. A frequent question we receive from homeowners looking to cut costs is: “Does using fan mode in the AC actually save electricity?”

The short answer is yes, absolutely.

Switching your aircon to fan mode can reduce its power consumption by up to 85% compared to standard cooling mode. Below, we break down exactly how fan mode works, how much electricity it uses, and when you should use it to maximize your savings.

What is Aircon Fan Mode?

In a standard air conditioning system, the most power-hungry component is the compressor. The compressor is responsible for pumping the refrigerant that actively cools the air.

When you switch your unit to Fan Mode, the compressor is completely turned off. The indoor unit’s fan continues to spin, circulating the existing air in the room without actively cooling or dehumidifying it. It functions exactly like a standard ceiling or standing fan, just built into your aircon unit.

Aircon Fan Mode Power Consumption: The Numbers

Does AC fan mode use a lot of electricity? To understand the savings, we have to look at the power consumption differences:

• Cooling Mode (Compressor ON): A standard residential aircon running on cool mode consumes between 1,000W to 1,500W per hour, depending on the BTU capacity and energy efficiency rating.
• Fan Mode (Compressor OFF): When only the internal fan is running, the unit typically consumes just 150W to 200W per hour.

By simply switching to fan mode after your room has already reached a comfortable temperature, you drop your energy usage to a fraction of its normal rate.

4 Ways Fan Mode Benefits Your Home and Wallet

1. Massive Reduction in Electricity Bills As highlighted above, running the fan alone uses significantly less electricity. Using fan mode for just a few hours a day instead of cool mode can result in noticeable savings on your monthly utility bill.

2. Reduces Compressor Wear and Tear Because the compressor works so hard to cool the air, running it 24/7 leads to rapid wear and tear. By utilizing fan mode, you give the compressor a break. This extends the lifespan of your unit and delays the need for expensive aircon repairs or chemical overhauls.

3. Perfect for Cool Singapore Mornings During the early morning hours or rainy days in Singapore, the ambient temperature is naturally cooler. Instead of blasting the compressor, fan mode is sufficient to circulate this naturally cool air, keeping the room comfortable without wasting power.

4. Prevents Stale Air Even when you don’t need active cooling, a closed room can feel stuffy. Fan mode keeps the air circulating through the unit’s filters, preventing the environment from feeling stale without the heavy energy cost.

The Best Strategy for Maximum Savings

You don’t have to sacrifice comfort for energy efficiency. The best strategy is to run your aircon on standard cooling mode for the first 1 to 2 hours until the room is thoroughly chilled. Once the room is cold, switch over to fan mode. The fan will circulate the trapped cold air, keeping you comfortable while your power consumption drops drastically.