How often should you reverse your ceiling fans?

Grumpty's answer

Every 6 months

Why bother

Reverse it to push warm air back down. A thorough-tier job. Skippable when life's busy, worth it when it isn't.

What the job involves

Turn the fan off and let the blades come to a full stop before you touch anything. Spinning blades and fiddling fingers don't mix.
Reverse the direction. Older fans have a little slide switch on the motor housing; newer ones do it from the remote, the wall control, or an app. Clockwise for winter so the warm air gets pushed back down, counterclockwise for summer so you get a breeze.
Switch it back on at low speed and stand underneath. In winter you should feel next to no draft. In summer you should feel a clear breeze coming straight down at you.
If the fan's there to keep you cool in summer, nudge the thermostat up about 4 F so the saving actually shows up, and turn the fan off when you leave the room. It cools people, not the air.

Do it yourself, or pay someone?

Yourself, two minutes, no cost. It's one switch flip or a tap on the remote, the simplest thing a fan does. Nobody to hire. If a fan won't change direction at all, it's an old or dying fan, not a job for a pro, and a new ENERGY STAR one runs roughly $50 to $300 depending on size and features.

Signs it's overdue

You're stood right under the fan in winter and feel a cool draft. It's still set to summer, chilling you instead of mixing the warm air down.
In winter the room's stuffy and warm up by the ceiling but cold round your feet. The fan isn't pushing the heated air back down where you are.
You've turned the heat up and the room still feels drafty every time the fan runs. That's the wrong direction, plain as day.

When to start thinking about it

No notice needed, really. Grumpty mentions it the day it comes due and that's that. Mark it done and Grumpty sets the next one, every 6 months, so you can go back to forgetting it exists.

Questions people ask

Which way should it spin in winter versus summer?

Clockwise in winter on low speed, which pulls an updraft that forces the warm air sitting up at the ceiling back down into the room. Counterclockwise in summer, which pushes air straight down for a breeze on your skin. That's ENERGY STAR's own guidance. Easy to mix up, so check it twice a year when the season turns.

Does reversing it in winter actually save money?

Only modestly, and only if you also move the thermostat. ENERGY STAR says the right direction plus a thermostat adjustment gets you a bit of extra energy and dollar saving, and the DOE notes a fan lets you raise the summer setting about 4 F with no loss of comfort. The fan doesn't heat or cool the air, mind. It just shifts it about, so the saving comes from you being comfortable at a kinder thermostat setting.

My fan has no switch. How do I change direction?

Many older fans have a small slide switch on the motor housing, horizontal or vertical. Newer ones reverse from the handheld remote, a wall control, or a phone app instead. The manual will say which yours is. Either way, stop the blades dead before you flip a physical switch.

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Related jobs

Stop keeping this one in your head

This is one job. Your home has dozens more, each on its own clock. Grumpty is a free home-maintenance app: add a job once, it tracks the date, grumbles when it's due, and rolls it forward the moment you mark it done.

No card.