24/7 Professional
Boiler Servicing,
Repairs & Installation

We provide a wide range of plumbing and heating services, including 24/7 emergency services, boiler installation, repairs, and more. We are based in Woking and New Malden and serve Surrey and South West London.

Our technicians are fully qualified, Gas Safe registered, and covered by £10 million Public Liability Insurance. This insurance also protects your home from any damage during our work. We prioritise safety and adhere to strict industry standards.

We aim to provide prompt service. Quotes are typically issued within a few hours, and we are available seven days a week to answer your calls and queries. Our commitment to efficiency ensures you get the assistance you need when you need it.

As Worcester Accredited installers and Vaillant Advance installers, we offer extended warranties of 10-12 years on Worcester boilers. This is a substantial advantage compared to other providers. Your Building Regulations Gas Safe certificate and Parts & Labour Warranty Certificate are also processed promptly for your convenience.

The F28 fault code on a Vaillant boiler typically signals issues with ignition or flame detection, leading to disruptions in heating and hot water supply. To address this, ensure an uninterrupted gas supply and inspect the ignition system for any faults, cleaning or replacing components as needed. Similarly, clean or replace the flame detection sensor and electrode, clear airflow pathways, and attempt a boiler reset. If problems persist, seek assistance from qualified heating engineers like Boilergurus, serving Surrey and Southwest London areas, for comprehensive diagnostics and repairs to maintain your boiler's efficiency and reliability.

A motorised valve is an electrically operated valve that controls where hot water flows in your heating system. It works together with your programmer and thermostats to direct heat to the right place at the right time. For example, a typical system might have:
> One motorised valve for the radiators
> One motorised valve for the underfloor heating
> One motorised valve for the hot water cylinder

If your home has two heating zones (for instance, upstairs and downstairs, each with its own thermostat), then you’ll need two separate motorised valves — one for each zone.
When your thermostat calls for heat, the motorised valve opens, allowing hot water from the boiler to flow into that specific circuit. When the demand is satisfied, the valve closes again.

In short: A motorised valve is the traffic controller of your heating system, making sure heat only goes where it’s needed — whether that’s radiators, underfloor heating, or your hot water cylinder.

The F75 error code on a Vaillant boiler is typically caused by a faulty boiler pump, a defective water pressure sensor, airlocks in the system, or incorrect pump speed

If your boiler pressure is rising high to 3 bar and then drops, the cause is a faulty expansion vessel. The expansion vessel is designed to accommodate excess pressure when the boiler is operating but if it is faulty, it cannot perform its job. This triggers the Pressure relief valve (PRV) to open automatically, resulting in boiler pressure drop. The PRV is a safety device which prevents the system from becoming over pressurised.

If the pressure relief valve is faulty, the boiler pressure will remain dangerously high. In this case, the PRV will need to be replaced as well. A faulty expansion vessel and a faulty PRV are often related issues that often need to be replaced simultaneously.

The EA227 fault code is an ignition fault, which is commonly a result of a blocked condensate trap, or frozen condensate pipe, followed by faulty electrodes or gas valves. EA 227 code will be displayed after the boiler fails to ignite four times before the boiler locks out.

An auto bypass valve is a self-regulating valve that opens automatically to maintain a constant minimum flow of water through a boiler. This protects the pump — whether internal (system boiler) or external (conventional boiler) — during its 10-minute pump overrun cycle, reducing the chance of overheating and long-term boiler damage.

A motorised valve is an electrically operated valve that controls where hot water flows in your heating system. It works together with your programmer and thermostats to direct heat to the right place at the right time when each zone calls for heat.

When your thermostat calls for heat, the motorised valve opens, allowing hot water from the boiler to flow into that specific circuit. When the demand is satisfied, the valve closes again.

Many homeowners assume a faulty thermostat is to blame, when in reality, the problem often lies with the motorised valve.
When the thermostat calls for heat but the zone does not warm up, the underlying cause is usually that the motorised valve actuator is not opening to allow hot water flow. This applies to both heating and hot water zones:
• Heating zones: The thermostat sends the demand signal, but the valve fails to open, so the radiators remain cold.
• Hot water cylinder: The cylinder thermostat calls for heat, but the motorised valve does not open, preventing the boiler from sending hot water to the cylinder coil.

In a typical heating system, motorised valves are used to control the flow of hot water to different zones or “appliances”. For example:

• Radiators – one motorised valve controls the central heating circuit.
• Underfloor heating – one motorised valve controls the underfloor heating circuit.
• Hot water cylinder – one motorised valve controls hot water demand.

If your property is divided into multiple heating zones (e.g. upstairs and downstairs, each with its own thermostat), you will require one motorised valve per zone. Larger homes often have several.

Example: A system with 3 radiator zones (ground, first, and second floor), 2 underfloor heating zones, and 1 hot water cylinder would require 6 motorised valves in total.

Motorised valves are external system components and generally do not last as long as a boiler, hot water cylinder or underfloor heating manifold.

• A Honeywell motorised valve is supplied with a 1-year manufacturer’s warranty.
• In practice, lifespan averages around 5 years, depending on type and usage.
• 3-port mid-position valves (Y-Plan systems) experience more wear, as this controls BOTH heating and hot water demands with a SINGLE valve, therefore is doing double the amount of work.
• By contrast, S-Plan systems use two separate 2-port valves, meaning the workload is shared by 50% and therefore each valve will typically last longer.
• The more motorised valves installed, the lower the demand on each individual valve, which can improve overall longevity.