AC vs DC ceiling fans

It's all about the motor

AC and DC refer to the type of motor that spins the blades. Your house is supplied with AC power either way. An AC fan uses that power directly. A DC fan has a small electronic unit that converts the power to DC to run a more efficient type of motor. The blades and the look can be identical. It's what's inside the housing that differs.

Running cost

DC fans are generally more efficient and use noticeably less power than AC fans, particularly at lower speeds. Ceiling fans are cheap to run either way, so the difference on your bill won't be dramatic for a single fan. Across a whole house of fans running through long summer nights, it adds up.

Noise

DC motors are typically quieter. AC fans can develop a hum, particularly on lower speeds or when combined with older speed controllers. In a bedroom where the fan runs all night, that quietness is one of the main reasons people choose DC.

Speeds and control

AC fans usually have three speeds, controlled by a wall controller or a pull cord. DC fans often have five or six speeds, plus reverse and sometimes a breeze mode, almost always via a remote. Many DC fans can also connect to an app or smart home system, so you can switch them from your phone or set them on a timer.

The flip side is that you're relying on a remote. If remotes tend to go missing in your house, ask about a wall-mounted controller option.

Price

DC fans usually cost more to buy than comparable AC fans. AC fans remain a sensible, reliable choice for rooms that don't get heavy use, like a spare room or laundry, or where budget matters most.

Durability

AC fans have simpler internals and have been around for a long time. DC fans have electronics that can be sensitive to power surges and heat. Choosing a reputable brand with parts available locally is sensible for either type. If your area is prone to storms, and plenty of the Illawarra escarpment suburbs are, it's worth knowing that surge protection at the switchboard can help protect sensitive electronics like DC fan controllers, along with everything else in the house.

Installation differences

Both types are installed in much the same way. A DC fan typically has a receiver or control unit inside the canopy and usually doesn't need a wall speed controller, just a switch for power. AC fans often need a wall controller with speed settings, which might mean replacing an existing switch plate. Either way, fan installation is licensed electrical work.

Which to choose for each room

• Main bedroom: DC, for quiet running and fine speed control.
• Kids' bedrooms: DC if budget allows, otherwise a quality AC fan.
• Living areas: DC for flexibility and lower running costs.
• Spare rooms and studies: AC is perfectly fine.
• Outdoor patios: pick an outdoor-rated fan, which come in both types.

Mixing both in one home

There's nothing wrong with having DC fans in the rooms you use most and AC fans elsewhere. Many people upgrade their main bedroom and living area first and leave the rest for later.

Want help choosing

Our ceiling fan installs page explains what we fit. If you'd like your DC fans on an app or voice control, we can set that up through our smart home service. For fans with lights, see our lighting page as well.

Call or text Kalani on 0424 400 346. Let us know which rooms you're thinking about and we'll help you weigh it up.