
Water and mains electricity sitting in the same cabinet is a real hazard, so a leaking boiler needs isolating first and diagnosing second.
What to do straight away
Before anything else:
- Switch the boiler off at the programmer and at the fused spur.
- Shut off the water supply to the boiler if you can get to the isolation valve.
- Put something underneath to catch the drip and move anything valuable out of the way.
- Leave the casing alone, opening it up is Gas Safe engineer's work.
What the location of the leak suggests
A drip from the pipework beneath the boiler usually means a compression joint or pump seal has failed. Water coming from the base of the casing itself often points to a corroded heat exchanger or a leaking diverter valve. A steady trickle from outside the property is normally the pressure relief valve doing its job because system pressure has crept too high.
Getting it sorted
Some leaks are a quick seal or valve swap. A leaking heat exchanger on an older boiler is usually the point where replacing the appliance makes more sense than repairing it, and we'll always be straight with you about which situation you're in. If you'd rather hand it to someone qualified, we work right across Halesowen, Stourbridge, Dudley and the wider West Midlands, and we book urgent repairs in fast, usually next day.
Want it done for you?
If you want your plumbing or heating problem fixed professionally for you, contact IJS Trade Services today for fast, reliable service across the West Midlands and surrounding areas.

