Boiler Leak Repairs in Kingston upon Thames

Boiler leak repairs in Kingston upon Thames, dealt with quickly before the water reaches the electrics or the floor below. We trace the source properly rather than sealing the symptom and leaving it to come back.

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Where Boiler Leaks Come From

Most leaks start at the pressure relief valve, a pump seal, a failed gasket or a corroded heat exchanger. Where the water appears is not always where it comes from, since it runs down the inside of the case before dripping out.

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What to Do Straight Away

Switch the boiler off at the fused spur, turn off the water supply to it and put a container underneath. Do not keep topping the pressure up, because that just feeds the leak. Then call us and describe where the water is showing.

Why Leaks Should Not Wait

Water and electrics in the same box is the immediate risk. Beyond that, a slow leak corrodes the internals and can turn a small seal replacement into a new heat exchanger. A leak is one of the few faults genuinely worth acting on the same day.

About us

Leaks are among the more urgent calls we take across Kingston upon Thames, and after more than 20 years the likely source is usually clear from the description on the phone. Quick Call Gas Certificates carries common seals and valves so many leaks are fixed on the first visit.

Gas Safe registered engineers
Over 20 years working on gas and heating
Same day service in most cases
Emergency call outs when your boiler fails
Certificates emailed on the day of the visit

Frequently Asked Questions

Is a leaking boiler dangerous?

It can be. Water inside the casing sits near live electrical components, and a leak that reaches the burner area can affect how the boiler runs. Switch it off, stop topping up the pressure and get it looked at the same day.

Why is water dripping from underneath my boiler?

Often the pressure relief valve discharging because system pressure is too high, or a failed seal on a pump or valve. Sometimes it is condensate from a cracked trap. The colour and the position of the drip usually tell us which before we arrive.

Can a boiler leak be repaired or does it need replacing?

Seals, valves and pumps are all straightforward replacements. A leaking heat exchanger is the exception, because the part is expensive and on an older boiler often outweighs the value of the unit. We will tell you which one you are dealing with.