Combi boiler repairs

combi heating repairsDoes your Combi boiler need some attention? Im assuming that if you’re reading this right now you may well have an issue with your boiler. You may be looking for someone who can fix the problem. Nobody wants their boiler to break, but unfortunately these things do happen and sometimes its necessary to call someone in to fix the problem.

In 1967 Vaillant conceived a device which for the first time combined heating and a hot water supply in a single combined unit – which is now commonly referred to as the ‘combi’ boiler. Domestic boilers in general have become increasingly complex over the last two decades or so – especially Combination boilers.

Getting the right person to fix your combi boiler is essential. Not all heating engineers fully understand how they work. Getting a heating engineer to fix your boiler who doesn’t fully understand how boilers work often leads to them guessing at what may be wrong. This often leads to parts being replaced which aren’t needed, and someone has to pay for them which is usually the customer! This results in a poor customer experience. I am a Combination boiler specialist. I specialise in domestic boiler repairs and maintenance. I cover repairs and maintenance for all types of domestic natural gas boilers including combination boilers, conventional boilers, system boilers, condensing or non-condensing, old or new.

Common causes of problems with Combi boilers include the following:

  • Flat or damaged expansion vessels – loss of pressure or leaks.
  • Dirty or damaged pressure relief valve – loss of pressure.
  • Dirty auto air vents – leaks/loss of pressure.
  • Blocked plate to plate heat exchangers – hot water problems.
  • Faulty or blocked pressure switches/sensors – boiler fails altogether.
  • Faulty flow turbines or flow switches – hot water problems.
  • Faulty thermistor(NTC) sensors – can effect hot water and/or heating.
  • Failing pumps – can effect hot water and/or heating.

Combi boilers in general are quite complicated, there are many components that can fail, which is why you should get a heating engineer thats understands them fully to maintain your boiler. Below is an example of how many components a Combi boiler can have. These are some of the main components that are housed within a Baxi Combi Instant 105 HE, just for example. Most of these are moving parts. Most of the non moving parts can also go faulty, for example the plate heat exchanger can leak internally, it can also get blocked which affects the hot water. Whilst the printed circuit boards on most boilers aren’t moving parts per se, most have electrical relays which are moving parts which can fail. This example is made up of 12 moving parts and 5 non-moving parts.

  • Fan
  • Air pressure switch
  • Heat exchanger – gas to water heat exchanger(primary)
  • Econimiser – secondary heat exchanger
  • Heat exchanger – plate to plate, water to water – (hot water)
  • Domestic hot water flow switch – diaphragm and microswitch
  • Primary flow switch(pump proving switch) – diaphragm and microswitch
  • Domestic hot water thermistor(sensor)
  • Primary thermistor(sensor)
  • Expansion vessel
  • Printed circuit board(PCB) – boiler CPU
  • Gas valve
  • Burner
  • Diverter valve x 2
  • Diverter valve electrical actuator
  • Pump
  • Auto air vent
  • Book a repair or service

    So if you’re having an issue with your boiler or heating system then get someone who is competent, can fix the problem and will turn up when they have promised to do so. Please give me a call on 07515058714 or 01709 912754
    Alternatively you can email me at

    Most boiler issues can be identified and often fixed within an hour. I carry a variety of boiler and central heating spares as stock. These spares includes pumps, valves, pressure sensors, air pressure switch’s, pressure relief valve’s and diverter valve service kits etc. I have a standard call out fee which is £65. This includes the first hour of diagnosis or repair.

    I repair most makes of boiler. Below is a list of the makes and models that I tend to work on most often. I do carry spare parts for the boiler manufacturers listed below.

    Useful Links:

    What does a boiler service involve?
    Gas Safe – Get your gas appliances safety checked every year

    Areas covered

    locationI am based in Wath-upon Dearne, Rotherham, South Yorkshire. I cover the whole of Rotherham and most of South Yorkshire, including Sheffield, Barnsley and Doncaster.

    Rotherham, Barnsley, Sheffield, Doncaster

    I cover the whole area of Rotherham including central Rotherham, Brinsworth, Catcliffe, Canklow, Masbrough, Treeton, Whiston, Greasbrough, Kimberworth, Thorpe Hesley, Rawmarsh, Wentworth, Bolton-on-Dearne, Goldthorpe, Thurnscoe, Wath-on-Dearne, Mexborough, Swinton, Kilnhurst, Hooton Roberts, Ravenfield, Thrybergh, Bramley, Hellaby, Maltby, Thurcroft, Wickersley and Braithwell.
    I cover most of Barnsley including central Barnsley, Birdwell, Stairfoot, Worsborough, Kendray, Ardsley, Athersley, Monk Bretton, Lundwood, Royston, Brierley, Cudworth, Cortonwood, Great Houghton, Shafton, South Hiendley, Brampton, Darfield, Wombwell, Hemingfield, Elsecar, Hoyland, Jump, Barugh Green, Cawthorne, Darton, Dodworth, Gawber, Mapplewell, Pogmoor, Staincross, Wilthorpe, Worsbrough, Thurnscoe and Tankersley.
    I cover areas of Sheffield including central Sheffield, Chapeltown, Ecclesfield, Grenoside, High Green, Oughtibridge, Thurgoland, Wortley, Aston, Aughton, Swallownest, Todwick and Hillsborough.
    I cover areas of Doncaster including central Doncaster, Adwick, Conisbrough, Edlington, Warmsworth and Mexborough.

    Why use Heat Solutions?

    question_icon I provide a service which is synonymous with competence and reliability, a service which hundreds of my customers depend upon each year. I accept card payments and I’m not VAT registered which means that you save 20% straight away. I am good at my job and enjoy what I do. I’m dependable and will always turn up when I have promised to do so. I see myself as a problem solver, I enjoy the investigative part of most repair work. I always endeavour to provide the type of service you would expect from a big company, with the flexibility that you would expect from an independent heating engineer. I have created a secure database which can be accessed from my smartphone. This has my customers’ details such as service and repair records, notes, boiler details, photos and installation manuals for example, anything I need can be attached to a customers profile for future reference. This was initially designed to make my job easier but it also enables me to provide a better service to my customers.

    So when a customer calls me to fix their broken boiler or heating system, they can rest assured that I am the person who will turn up and can fix the problem without using guesswork. Read my customer reviews


    phone_iconYou can give me a call on 07515058714 or 01709 912754
    Request a call back via my request form
    Alternatively you can email me at

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