How to use the online alarm clock
Before handing the boiler visit over to someone else, set the alarm for 4:50 pm and pass on the engineer’s name, the expected checks and any access details. That gives the other person a clear prompt shortly before 5:00 pm, when an afternoon appointment can easily be lost among unfinished work, school collections or household jobs.
For this boiler check, the alarm is only useful if the screen running it remains awake until it sounds. A phone or laptop that goes to sleep beforehand may leave the engineer waiting without anyone noticing the alert. Keep the alarm page active, leave the sound audible and use mains power if the battery is low. If responsibility has changed hands, ask the person taking over to set the same 4:50 pm alarm on their own phone rather than relying on yours from elsewhere.
Whoever is meeting the engineer should allow for the late-afternoon journey before treating 4:50 pm as the moment to start travelling. Roads around town centres, school routes and commuter junctions may already be busy by then. Check the route earlier in the afternoon, add time for parking or walking from a nearby street, and aim to be at the property before the alarm sounds so the final minutes are available for unlocking gates and finding the boiler paperwork.
Common questions
Do I need an account or an app?
Neither. Choose a time and a sound, press Start, and it runs in this browser tab. Nothing is downloaded, nothing is registered, and closing the page leaves nothing behind on the device.
Can I change the sound?
Yes, there is a short list of tones to pick from before you press Start. Softer sounds are easy to sleep through, so a firmer bell tends to be the safer choice for anything early in the morning.
Will it still be right when the clocks change?
Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.
Can I use this on a phone?
It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.
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