Сentral Heating Services



Our company has been providing boiler service since 2012, constantly striving to improve in every area possible, to provide customers with first-class service and high-quality boiler products. Our staff includes highly qualified boiler and central heating service specialists, each of whom has undergone appropriate training; that is why they all have the necessary knowledge and skills. We easily solve boiler problems of any complexity, be it residential or commercial property, providing the required result. Troubleshooting is carried out in one visit of the engineers; they immediately determine the nature of a specific boiler problem and the reasons for its occurrence and also carry out servicing and repair operations using original spare parts. Among our advantages, we can name the following:

  • Components are always available;
  • We have our own spacious warehouse for storing products;
  • We have an authorized service center;
  • In addition, reasonable prices are set and promotions are often in place to help customers significantly reduce their expenses.


Malfunctions in central heating systems are usually associated with incorrect operation of equipment, errors in the installation or design of the boiler room. To ensure the efficient operation of the boiler equipment, regular maintenance of central heating components is required. When diagnosing and adjusting the boiler once or twice a year, breakdowns and downtime of the central heating system can be avoided. It is possible to ensure the full and correct operation of the heating system with the help of water treatment. If the water entering the heating unit has not been sufficiently cleaned, then the internal boiler surfaces will suffer from deposits of salts and impurities, which destroys them and significantly complicates the transfer of heat.


The boiler may not turn on for several reasons. Most often the combustion sensor is to blame. The reason for its failure may be contamination of the gas pipe. You can remove the branch pipe, rinse it with water, clean it with a cotton swab, and then blow off the remaining moisture. If after completing the procedure nothing has changed, you should call a specialist in heating system service.

  • A loud noise during the operation of a gas boiler often indicates a malfunction of the heating system. Such a problem requires attention exclusively from a qualified specialist. Do not attempt to carry out repair work on your own without proper qualifications. You shouldn’t postpone contacting a heating service specialist, as any delay can cause an emergency;
  • Draft problems in the boiler can arise for various reasons. This could be a clogged coaxial chimney or a problem with the blower fan. The solution to the problem should be entrusted exclusively to a qualified specialist of boiler and radiator service who will diagnose and quickly identify the malfunction;
  • The settings in the device can be lost for various reasons. To determine them, you need to call our qualified engineer, who will quickly identify and fix any problem;
  • A weak burner flame can be associated with insufficient gas pressure, problems in the elements of its supply to the burner or in the burner itself, as well as in other components involved in the work;
  • If the boiler gives an error that you cannot eliminate with simple manipulations, then immediately call a specialist. Modern equipment is manufactured in such a way as to quickly respond to any problems inside, therefore, during self-diagnosis, it determines the source of the problem and reports the corresponding error code;
  • When the boiler does not hold pressure, problems arise with its operation. To eliminate such a breakdown, qualified intervention is required, since the cause can be hidden anywhere.


If interference was detected in the operation of the central heating system, or it stopped working altogether, it is necessary to turn it off. Under no circumstances should you try to repair the unit yourself. In addition to the likelihood of further damage to the appliance, there is a danger of provoking an explosion. After turning off the central heating, contact a specialist immediately. By the time the engineer arrives, it is necessary to provide free access to the boiler; it will help to diagnose the breakdown quicker. You can order an emergency call out of a gas engineer by calling us at 442030265147.



Timely maintenance of boiler equipment is the key to its reliable, safe and long-term operation. This set of measures usually includes the following operations:

  • checking the heat exchanger for contamination, as well as cleaning if necessary;
  • evaluation of the performance of ignition and ionization electrodes;
  • checking the safety of automation, detecting the presence of overheating and reverse thrust;
  • finding out the pressure indicator in the expansion tank, and pumping if necessary;
  • checking the pressure in the central heating system;
  • determination of the operability of the circulation pump and three-way valve;
  • checking the parameters of the sensors for the heating circuit;
  • clarification of the state of heat exchangers for hot water supply;
  • descaling by washing (in some cases);
  • gas pressure check.

Work should be carried out at regular intervals in accordance with the requirements and standards. Of course, it is important that central heating maintenance is performed by professionals, so we recommend that you call us for the best results.


Timely maintenance of equipment will prevent the rapid wear of all parts, and, accordingly, extend the service life of your boiler. Defective gas equipment is dangerous to your life as it can lead to an explosive situation. The procedure should only be carried out by a qualified service engineer. All our specialists undergo training from leading manufacturers of boilers and improve their qualifications annually; they know all the intricacies of gas equipment. Our teams are equipped with the necessary devices, such as a gas analyzer, a gas leak detector, a washing station, and more. It is strictly forbidden to carry out maintenance on your own without proper qualifications. Our central heating services are available around the clock, so you can count on us whenever you need assistance with restoring the correct functionality of your plumbing systems in a residential or commercial property. By turning to the services of our company, you will receive a number of advantages:

  • Technical support 7 days a week;
  • Spare parts discounts;
  • Personal manager;
  • Qualified services;
  • Repair and spare parts warranty;
  • Only original parts.


We offer repair of boilers in London and surrounding areas. Our team of experienced engineers will efficiently and quickly eliminate any accidents with boilers, plumbing equipment and engineering networks. Our company offers a wide range of annual and one-time maintenance services, as well as diagnostics of any malfunctions with the subsequent repair. We can help in case of domestic boiler malfunctions such as heat exchanger failure, loud noise, insufficient pressure or flame, error message, etc. The boilers repair process includes:

  • Diagnostics using modern equipment, which provides a complete set of information about the state of the device and existing breakdowns;
  • Ensuring the safety of the work carried out;
  • Identification of any deviations of the wiring diagram and operating conditions used in a particular case from the manufacturer’s recommendations;
  • Analysis of the integrity of the mechanical components of the central heating system and determination of their wear;
  • Computer analysis of the electronic control system;
  • Correction of automation and its adjustment to ensure maximum efficiency of the system.


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Customer requests heating services.

Call at 442030265147 for boiler experts near you.

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Operator processes the order for boiler and radiator service.

Please be ready to provide the operator with your contact information and address in London. Details on the cause of boiler malfunction will facilitate the provision of service.

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The boiler services specialist arrives at the place of call.

Our mobile central heating services London units staged throughout the area on a 24 hour duty are ready to respond at a moment’s notice.

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Specialist carries out the necessary work on boiler repairs.

We will complete the boiler work in one visit on the day of contact. You’ll be asked to make a payment only upon completion of work.


The specialists at KeyCity work hard to meet the individual needs of each customer offering nothing less than excellent boiler radiator and service care. We strive to provide our customers with the most optimal and reliable solution to a boiler related problem.

Service Guarantee.

The work on central heating maintenance is guaranteed for a period of up to 2 years.

Boiler Equipment Guarantee.

All our products are supplied with the manufacturer’s warranty for a period of 1 year.


How quickly can the boiler specialist arrive at my place?

The specialist in heating systems will arrive at your place in 20 minutes or less from the moment of the call.

How much time does it take to complete heating system repairs?

The completion time varies depending on the complexity of work and availability of equipment.

Are your central heating services guaranteed?

Yes, they are. For your peace of mind, the work performed is guaranteed for a period of up to 2 years. Also, our products come with a 1-year boiler manufacturer’s warranty.

What are your service hours?

We are available around the clock, 365 days a year.

What is the cost of heating systems repair?

The cost varies depending on the urgency of a call, time of day, the complexity of work and required consumables. The exact cost is determined after on-site diagnostics.

What forms of payment do you accept?

You can pay for the central heating services London in cash, with a credit card or by bank transfer.

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