Know your boiler is failing before it fails

Boiler Beacon watches how your boiler normally behaves, notices when something changes, and captures the evidence of intermittent faults that vanish before an engineer arrives.

Not yet available. Join the list and we'll tell you when it is.

The problem

The fault never happens when the engineer is there

An intermittent boiler fault is the worst kind. It locks out at six in the morning, resets itself, and by the time someone comes to look at it the boiler is running perfectly and there is nothing to see.

So the engineer does what anyone would do: replaces the most likely part, charges for it, and leaves. Three weeks later it happens again.

The information that would have solved it existed. It just wasn't recorded.

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Wide shot: a heating engineer crouched at an open boiler in a domestic utility room, looking at a working unit with no fault showing. The mood is quiet frustration, not drama. Natural light, muted colours, real kitchen clutter. Not a stock photo smile.

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By the time someone looks, the boiler is behaving.

The idea

Watch it long enough to know what normal looks like

Boiler Beacon sits alongside the boiler and watches. It doesn't connect to the control board, it doesn't sit in the gas path, and it doesn't need an engineer to install it.

Over the first days it builds a picture of how that particular boiler behaves: how it fires, how long it runs, what it sounds like, how the flow and return temperatures move through a normal cycle.

Then it notices when that changes.

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Hero product shot, wide: the device mounted on a pipe beside a domestic boiler in a real utility room. Understated industrial design, matte casing, a single small status LED. Shot like a piece of instrumentation, not a consumer gadget. Shallow depth of field, boiler softly out of focus behind.

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Non-invasive. Nothing enters the gas path or the control board.

How it fits

Nothing invasive, nothing certified, nothing to sign off

Because it doesn't touch the gas circuit or the boiler's own electronics, fitting it isn't gas work. It clamps to the pipework and listens.

That is a deliberate constraint, not a shortcut. Anything that intervenes in a boiler's operation needs certification, an engineer, and a reason to trust it. Something that only observes needs none of those things.

It can be fitted in minutes, by anyone, and removed just as easily.

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Close-up, portrait: the sensor clamped to a copper flow pipe. Macro detail on the clamp mechanism and the pipe surface. Cool light, sharp focus on the contact point. Should read as precise and engineered.

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Clamped to the pipe. Nothing cut, nothing wired in.

What it learns

A boiler has a rhythm. Faults break it.

A healthy boiler cycle has a shape: ignition, a rise in flow temperature, a plateau, a fall as the demand is met. Repeat.

Faults distort that shape long before they cause a lockout. Short cycling. A slower rise. A pump that hesitates. A flow and return gap that has quietly widened over a month.

None of these are visible to a homeowner, and none of them are visible to an engineer standing in front of a boiler that is currently working.

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Clean explanatory diagram, not a photograph: a temperature-over-time trace showing a normal boiler cycle in one colour, with an abnormal cycle overlaid in the signal orange. Minimal, technical, confident. Think a well-designed instrument readout or a scientific figure, not an infographic.

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Normal cycle against a degrading one. The change precedes the failure.

What you get

Evidence, not a notification

When something is wrong, an alert on a phone is not much use on its own. What an engineer needs is what happened, when, and how often.

Boiler Beacon captures the window around an event: the cycles leading up to it, the moment itself, and what the boiler did afterwards. That is handed over as a record, not a warning light.

The intent is that an engineer arrives already knowing what they are looking for.

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Portrait: a phone or tablet held in a working hand (dirty, real), showing a clean data readout of a captured fault event. The screen content is the subject. Muted, technical UI in the site's dark palette with the signal orange. Not a glossy marketing render.

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The window around the event, not just the alarm.

Where it is

Honestly: it isn't finished

Boiler Beacon is in development. There is no product to buy, no pre-order, and no date we're willing to promise.

What there is: a working principle we believe in, hardware being built and broken, and a problem that is worth solving properly rather than quickly.

If that interests you, leave an address and we'll tell you when there is something real to see. We will not email you about anything else.

Questions

What people ask

Does it connect to the boiler?

No. It doesn't connect to the control board, the gas circuit, or the boiler's own electronics. It observes from outside. That constraint is what makes it fittable by anyone, without certification.

Will it fix my boiler?

No. It's a diagnostic instrument, not a repair. It's there so that when an engineer does come, they arrive with evidence instead of a guess.

Does it work with any boiler?

That's what we're establishing. Because it observes rather than integrates, it isn't tied to a manufacturer's protocol, which is the whole point of the approach. Where the limits actually are is part of what's still being tested.

When can I buy one?

We don't know, and we're not going to invent a date. Join the list and you'll hear when there is something to see.

Is this for homeowners or engineers?

Both have the same problem from different ends. A homeowner wants the fault found. An engineer wants to stop being called back to a boiler that works perfectly while they're standing in front of it.