Panels and Power
Wiring
Panels and Breakers
Faults and Symptoms
Inspections
EV Charging
Service Areas
Get in Touch
Resources
Installation · Devices
A fan is not a heavy light. It is a heavy light that moves, and the box holding it has to be rated for that. Hanging one from a standard light box is the single most common fault we find, and it is invisible from the room below.
The box
Standard ceiling boxes are made to hold a static light. A fan adds weight and continuous vibration, and a fan-rated box is built for both, usually fixed to a brace spanning the joists.
Wobble is nearly always mounting rather than the fan. Before anyone balances blades, the mount is checked, because a rated box fixed properly removes most wobble on its own. Blade balancing after that is a small adjustment, not a rescue. Where the box has clearly been reused several times, an electrical safety inspection is worth the hour.
The switch is the part people forget to mention. Speed control and reverse need the right switch or a remote, and an existing single switch on a dimmer is actively wrong for a fan motor.
Where that has been done, it shows up as a hum, and it is a different problem from flickering lights even though it sounds similar. Changing the control is a switch installation rather than a fan job.
How it runs
Whether there is a box, and whether it is rated for a fan. A light box gets replaced with a braced fan-rated one rather than reused.
Speed and reverse need the right control. An existing dimmer on a fan motor is wrong and gets changed, not worked around.
Brace fitted, fan hung, wired, then run through every speed. Wobble is chased at the mount before anyone touches the blades.
A like-for-like swap usually is not permitted work. A new position with a new circuit is, and we file it.
What it costs
Swapping a fan where a rated box and the wiring already exist runs $150 to $500. Putting a fan where there has never been one, with no box and no wiring, is $400 to $1,000.
While the ceiling is open it is worth thinking about what else belongs up there. A fan and pot lights in one visit is one set of access and one set of patching, and if the existing fitting is coming down anyway, light fixture installation covers the alternative if a fan turns out not to be what the room wants.
If an installed fan has started making noise or has stopped responding to the switch, that is not this page. Ceiling fan repair covers what usually causes it.
Related work
Common questions
Customer reviews
Found the old one hanging off a plain light box and replaced the box properly.
No box up there at all. Fished the run and braced it without opening more ceiling than needed.
Two other people balanced the blades. This one checked the mount and it was that.
Asked for the pitch in advance and turned up with the right downrod.
From the blog
Next step
Tell us whether there is already a fan up there. That one answer decides which of the three prices applies.
Fan-rated box always · Switch checked · Written price before we start