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Repair · Diagnosis
Half the house is dead, the rest is fine, and no breaker has tripped. That combination is specific enough to narrow down quickly, and one of the possibilities is urgent rather than merely annoying.
Where it comes from
A house is fed by two legs. Lose one and roughly half the circuits go dead while the other half carry on, which is exactly the symptom people describe.
The most common cause we find is a connection that has failed under load rather than anything dramatic: a lug that was never tight, or a termination that has heated and degraded over years. Those are also what breaker panel repair covers, and thermal imaging is how they get found before they fail completely.
The urgent version is a lost neutral. The tell is not darkness but strangeness: lights brightening in one part of the house while dimming in another, or electronics failing in odd combinations. That puts uneven voltage across your appliances and it should go to a 24/7 electrician rather than a booking form.
How it runs
If the street is affected it is the electricity company. We establish that first rather than charging you to discover it.
Both legs checked under load. This is what separates a supply problem from a connection inside the house.
From the panel outward until the point of loss is found. Nothing is replaced before that.
Fixed and rechecked under load, with the panel labelled if anything changed.
Before you call
First, look at whether your neighbours have power. A supply-side fault is the electricity company rather than an electrician, and calling us first only delays it. If the street is dark, ring them.
Second, look at the panel rather than touching it. Note which circuits are dead and whether any breaker is in a middle position rather than fully on or off. That pattern tells us a great deal before we arrive, and if the panel is warm or smells hot, say so, because a hot panel changes the urgency completely.
What not to do is reset repeatedly. A breaker that will not hold is reporting something, and cycling it under load makes a degraded connection worse rather than clearing it. Tripping breaker diagnosis covers that case in more detail.
Where the outage keeps recurring in the same part of the house, the underlying answer is often an ageing service rather than a single fault, and a service upgrade priced against a year of call-outs frequently makes that obvious.
Related work
Common questions
Asked whether the neighbours had power before booking anything. Saved us a call-out.
Recognised it from the description over the phone and came out that evening.
Traced it to one lug rather than attending three times like the last firm.
Measured both legs properly and found it in the meter base, not the panel.
From the blog
Next step
Tell us which circuits are dead and whether the neighbours are affected. That decides who you need before anyone charges you.
Supply ruled out first · Diagnostic priced up front · Cause in writing