Boiler Engineer
London& Surrounding Area

At minimum, a boiler engineer must hold a Gas Safe registration covering the specific appliance category — for example, CENWAT for central heating wet and boilers. Many engineers also hold ACS (Accredited Certification Scheme) qualifications. For oil boilers, look for OFTEC registration. Manufacturer-specific training from brands like Worcester Bosch, Vaillant or Baxi is a further indicator of expertise.

Yes — most Gas Safe registered boiler engineers also handle radiator repairs, replacements, and balancing. Common radiator issues include cold spots (usually trapped air), leaking valves, and radiators that do not heat up due to sludge buildup. Radiator repairs typically cost £60 to £150, while fitting a new radiator including the unit costs £150 to £350.

A combi boiler heats water on demand and is ideal for smaller homes with one bathroom — no tank or cylinder needed. A system boiler uses a hot water cylinder and suits homes with two or more bathrooms where demand is higher. Conventional (regular) boilers have both a cylinder and header tanks and are found in older properties. Your engineer will recommend the right type based on your home's size and hot water demand.

If your boiler is over 10 to 15 years old, breaks down frequently, or has an efficiency rating below A (90%+), replacement is usually more cost-effective than repeated repairs. A single repair costing over £400 on an older boiler is often not worthwhile. Modern condensing boilers are up to 30% more efficient than older models, so a new boiler can pay for itself through lower gas bills within 5 to 7 years.

A leaking boiler should always be taken seriously. While a small drip from a pressure relief valve may indicate a minor issue, water leaking from the boiler casing can damage internal electrics and create a safety hazard. Turn off the boiler and the water supply to it, place a container under the leak, and call a Gas Safe registered engineer. Never attempt to repair a boiler leak yourself.

When you submit your details, we match you with a vetted, Gas Safe registered boiler engineer covering London. The engineer will contact you directly — usually within 15 minutes — to discuss the problem, confirm availability and provide an estimated cost. There is no obligation and no hidden fees from our side; you deal directly with the engineer.