In-home display explained

An in-home display, often shortened to IHD, is the small portable screen that comes with many smart meter installations. It is not the smart meter itself. The smart meter is the fixed meter in your home; the IHD is only a screen that shows information from it.

That distinction matters. If the screen is blank, out of range or showing old data, your meter may still be sending readings to Octopus. The quickest check is usually your Octopus app or online account. If regular readings are appearing there, the billing connection is probably the important part to focus on.

What an IHD normally shows

The exact layout depends on the model, but a typical IHD can show:

• current electricity usage in watts
• gas and electricity use in kWh
• cost so far today, this week or this month
• tariff information such as unit rates and standing charges
• meter readings
• simple low, medium or high usage indicators
• prepayment balance information, if the meter is in prepay mode

Electricity usage can feel close to real time, which is why the display is useful for spotting the effect of a kettle, oven, tumble dryer or EV charger. Gas is different. Gas meters usually report less frequently, so the gas figure can lag behind what is happening in the moment.

For bills and supplier checks, use the actual meter readings or the readings shown in your supplier account. Treat the IHD as a helpful display, not the final billing record.

How it connects to the smart meter

Most IHDs connect to the smart meter over the home area network, commonly using Zigbee. This is a short-range local connection. It is separate from your Wi-Fi and separate from the mobile or radio link your meter uses to send readings through the smart-meter network.

Range is the usual weakness. Octopus says IHDs need to be close to the electricity meter, and Citizens Advice recommends putting the display closer to the meters with as few walls as possible in between. If the meter is in a cupboard, garage or outside box, a kitchen display at the other end of the house may struggle.

The display is paired to your own meter, so it should not pick up a neighbour’s usage. If it loses the pairing or the signal is too weak, it may show a waiting message, stale figures or no useful usage data at all.

Do you actually need the screen?

Many households use the IHD a lot in the first few weeks, then rely more on the app, bills or occasional checks. That is fine. You do not need a working IHD for Octopus to bill you correctly, as long as the smart meter itself is communicating or you are sending readings when needed.

The IHD is still useful when:

• someone in the home wants a simple visible reminder of usage
• you want to test which appliances create short demand spikes
• you are helping a less app-confident household member understand energy use
• you are on prepayment and use the screen to monitor balance or top-up information

The Octopus app and online account are better for history, half-hourly data, tariff detail and longer-term patterns. If you use Agile, Go, Intelligent Go or another smart tariff, app and account data usually give more context than a basic IHD screen.

If it stops working after switching supplier

A display can behave oddly after a supplier switch. It might show the old supplier’s tariff information, stop receiving usage data, lose gas, or sit on a waiting-for-data message.

Start with the practical checks:

1. Check the Octopus app or online account. If readings are still arriving there, the meter connection is more important than the screen.
2. Move the IHD nearer the electricity meter. Try a socket close to the meter and leave it there for a while.
3. Keep it plugged in. Some displays have batteries, but they are not designed to run unplugged for long periods.
4. Compare readings. If the IHD shows meter readings, compare them with the actual meter and your account before relying on them.
5. Give short glitches a little time. Citizens Advice suggests waiting an hour for missing usage or balance to return, then allowing up to 24 hours after moving the display.
6. Contact Octopus if it still behaves differently after a switch. Citizens Advice says to contact the new supplier if the display is still working differently more than 48 hours after the change.

If you have an older SMETS1 meter installed by a previous supplier, the IHD is more likely to have problems after switching. That does not automatically mean the supply is unsafe or that billing has failed, but it does mean you should check whether the meter is still working in smart mode and whether Octopus can see regular readings.

When to escalate

Escalate quickly if the display problem affects a prepayment top-up or balance. You should not be left unable to top up because a screen is not working.

For a normal credit account, the escalation is less urgent, but it is still worth contacting Octopus if:

• the app and online account are not receiving readings
• the display has been moved near the meter and still has no data after 24 hours
• tariff information on the display does not match your contract or bill
• the meter readings shown on the display are not close to the actual meter readings
• you rely on the display for accessibility or household support

Citizens Advice says suppliers must take certain steps within five working days when you report that an IHD is not working as it should. Those steps include checking whether it is working properly, trying to find out why and offering to write to you with what they found. If those steps are not completed in time, compensation rules may apply.

If your IHD was supplied less than a year ago, suppliers normally have to help with faults. For older displays, Citizens Advice says some suppliers, including Octopus, have agreed to help, but replacement terms can vary.

Octopus Home Mini and other alternatives

If you mainly want better live data, an IHD is not the only option.

The Octopus Home Mini is Octopus’s small device for sending smart-meter data into the Octopus app. Octopus describes it as a beta product. It needs a smart meter Octopus can connect to, a working home area network and Wi-Fi. When it works, it can show near real-time electricity use in the app and gas roughly every 30 minutes.

Other households use third-party tools such as a Glow display or Bright app access from Hildebrand, Loop, or Home Assistant integrations. These can be useful if you want dashboards, exports or local automation, but they are extra monitoring tools rather than a requirement for switching to Octopus.

The bottom line

A working IHD is helpful, especially for simple household awareness. It is not the meter, and it is not the main test of whether Octopus can bill you.

If you are switching to Octopus, focus first on whether the account receives regular readings and whether your tariff details are correct. Then decide whether fixing the physical display is worth the effort, or whether the app, online account or a Home Mini gives you the information you actually use.

If you are checking your setup before switching, the smart-meter switching guide is the better next step.