Commercial Boiler Repair

Commercial Boiler Repair

Do you need a commercial boiler or heater repair? For a quick quote, click the button and complete the form – we’re nationwide!

How much does a commercial boiler repair cost?

Based on previous job data, the cost of a commercial boiler repair is between £500-750 (ex VAT). The price can increase significantly for major faults such as leaking heat exchangers or flue failure.

How often do commercial boilers break down?

Commercial boilers are very reliable. They are designed to be robust and capable of running at a very high demand. Years of research and development have fine-tuned commercial boilers to be capable machines. With that in mind, you can expect a commercial boiler to break down far less than a domestic boiler, mainly due to the simplified design and superior build quality. On average, you can expect a commercial boiler to break down every 5-7 years, with a higher frequency when the boiler gets beyond ten years old. 

Should I repair or replace a commercial boiler?

This is one of the most commonly asked questions when it comes to a commercial boiler breakdown. The answer can be very different from a domestic boiler due to the higher replacement costs. Wherever possible, you should attempt to repair a commercial boiler if the following criteria have been met:

  • The boiler is less than 15 years old
  • The boiler has a solid history of reliability
  • The boiler is a high-efficiency appliance (A-rated)
  •  The boiler is part of a multi-boiler cascade system 

If your boiler doesn’t meet these criteria, we would recommend considering replacement. The main reason for this is efficiency; if your boiler is not classed as a high-efficiency boiler, it will be costly to run. By replacing the boiler, the cost will be largely offset by a reduction in energy costs. This can be as high as 40%, leading to considerable savings for a commercial property.

What about preventative maintenance?

Commercial boilers can are found in many business premises, including schools, hotels, warehouses, factories, leisure centres and churches. Most businesses depend on their heating and hot water to be in constant use, 24 hours a day – think of a hotel, for example. For this reason, there can be big problems should something go wrong. For health and safety reasons, all businesses must provide a warm and hygienic environment for their employees. To keep your commercial boiler in tip-top condition and running efficiently, it needs to be serviced regularly. This way, even minor issues will be identified before they have a chance to become a significant problem. 

If your commercial boiler does need a repair, you need to engage with a commercial-oriented company that understands the importance of a commercial boiler breakdown. It’s vital they are equipped with the right tools and knowledge to get you up and running as swiftly as possible. There is no point contact any local boiler engineer; the repair must be carried out by a commercial boiler specialist, with the correct registration to repair your specific appliance.


Most modern commercial boilers are highly efficient and hard-wearing, but you must have them serviced by a qualified gas engineer regularly to avoid regular breakdowns. If your commercial boiler needs repairing, you should contact an engineer registered to repair the boiler. Once you’ve received a diagnosis and quote, you can decide whether to repair or replace your commercial boiler.

You can book a commercial boiler repair with MHL nationwide on 0800 061 4567

Get a quick quote for a commercial boiler repair

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Front view of grey and blue commercial boilers installed on a jig

What Happened to British Gas Business Care?

Click for a quote Need a quote for commercial boiler or heating cover? Just click the button and complete the short form – we’re nationwide! Have British Gas stopped providing commercial boiler care plans? Yes, since the beginning of 2022 British Gas have been cancelling commercial boiler care plans. Why have British Gas been cancelling […]
Read "What Happened to British Gas Business Care?"