Are smart bulbs worth it?

Smart bulbs are the cheapest way into home automation and the most likely to end up back in the box. The deciding question is not whether the features are useful but whether the switch problem applies to your household.

Safety

Step by step

1. Understand the switch problem first.A smart bulb needs power to receive commands, so the wall switch must stay on permanently. Anyone who turns it off at the wall — a visitor, a child, habit — makes the bulb unreachable until someone turns it back on.
2. Decide whether that is tolerable in each room.Fine for a lamp on a plug, a bedside light, or a fitting nobody switches at the wall. Poor for a main ceiling light in a room where the switch is by the door and gets used automatically.
3. Consider a smart switch instead.It replaces the wall switch and controls ordinary bulbs, so the physical switch keeps working normally for everyone. More expensive, needs electrical work, and it solves the problem properly.
4. Use them for scheduling.Lights on before you get home in winter, off at bedtime, and a varied pattern while away. This is the most durable genuine use and the one people keep after the novelty passes.
5. Use them to add dimming.A smart bulb dims a fitting that has no dimmer switch and no room for one. That is a real capability rather than a gimmick, particularly in rented homes where wiring changes are not an option.
6. Use colour temperature rather than colour.Warm in the evening, cooler during the day. Far more useful day to day than colour-changing, which is used enthusiastically for a fortnight and then set to white.
7. Fit them where access is awkward.A high ceiling, a stairwell fitting, an outbuilding. Being able to switch and dim from a phone is genuinely valuable where reaching the fitting is not easy — though scheduling matters more than colour there.
8. Check the fitting and the shade.Bayonet or screw, the physical size, and whether it fits inside the shade. Smart bulbs are often bulkier than standard ones and do not always fit an enclosed fitting.
9. Prefer a local standard where you can.Bulbs supporting Matter or working with a local hub keep functioning if the manufacturer's service goes away — which happens. Cloud-only bulbs become ordinary bulbs when a company withdraws support.
10. Think about who else uses the room.Guests, children and older relatives all reach for the wall switch. A lighting system only you can operate is a system that annoys everyone else.
11. Weigh the cost per fitting.Several times the price of a decent LED bulb, per bulb. A whole house is a substantial sum, which is why starting with two in the rooms that benefit most is sensible.
12. Start with one room.A lamp on a plug, scheduled. If you are still using the schedule in a month, extend it. That answers the question better than any comparison.

Tips

• Smart plugs on lamps do most of what smart bulbs do for less, without the switch problem — they just cannot dim or change colour.
• Put a note on the wall switch, or fit a switch guard, in a household where someone always turns it off. It sounds trivial and it is the difference between the system working and not.
• Check the bulb still works as an ordinary bulb when the network is down. Most do; some cloud-dependent ones behave oddly.

Common mistakes

• Fitting them to a main ceiling light with a used wall switch — Someone will turn it off at the wall out of habit and the bulb becomes unreachable. That room needs a smart switch rather than a smart bulb.
• Buying for colour changing — Almost everyone sets them to white within a fortnight. Scheduling, dimming and colour temperature are the features people keep using.

If it doesn't work

Questions people ask