No hot water but the radiators are warm? In Tipton that is usually a diverter valve, not a new boiler. Same-day diagnosis across Great Bridge, Princes End and Ocker Hill.
Heating on, radiators hot, and nothing but cold at the taps. It is one of the most common calls we get in Tipton. It almost always has the same cause.
The cause is the diverter valve. That is the part that decides whether the heat goes to the radiators or the hot water. When it sticks, it usually sticks towards the heating. That is exactly the symptom people describe.
Not usually. You have heating, which is the part that matters in January. It is a next-day job rather than a middle-of-the-night one. Pricing it as an emergency would be sharp practice.
Different fault, same family. That is normally a scaled plate heat exchanger. The water round here is hard enough that it happens. It can often be flushed rather than replaced.
Ask to see the Gas Safe ID card on the doorstep and check the back of it. It lists what that person is signed off to work on. Any genuine engineer expects to be asked.
Which part has failed. A diverter valve is simpler than a heat exchanger. The engineer confirms the part first and gives you the cost before fitting it.
On a combi it is the single commonest cause of this exact fault. The valve or its cartridge gets changed. The boiler does not.
Plenty of Tipton houses still run a cylinder in the airing cupboard. There the same symptom points at the motorised valve on the pipework or its thermostat, not at the boiler at all.
The fault gets confirmed on the boiler rather than assumed from the description on the phone. You get told which part and what it costs before a spanner comes out.
It is not a reason to be sold a new boiler. If somebody leads with a replacement quote for cold taps and warm radiators, get a second opinion.
A diverter valve is usually a one-visit job of one to two hours. Where the part has to be ordered, the visit is booked before the engineer leaves. You are not left without heating in the meantime.
A photo of the boiler and its display. Tell us if you have a cylinder in the airing cupboard. Say whether the water runs cold from the start or goes warm for a minute first.
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