It is an insurance requirement to have your flue/chimney inspected each year to ensure it is safe to use the fire. Many refer to it as a sweep, but sweeping is only a small fraction of the job.
What you are paying for is an inspection similar to getting a Warrant of Fitness for your car or a house inspection completed. This means whether you pass or fail, there are still costs involved, which is why no refund can be issued if it fails. However, we will come back later and do a re-inspection for free once the repairs have been completed, if required.
Once the technician arrives on site, they will set up and start to carry out the inspection. They have an app that, depending on the fireplace type/style, will give them a list of features the technician needs to check off, ensuring they have inspected it correctly. Once complete, you will be issued with a PDF report of the inspection that can be used for insurance purposes, etc.