Case Study: Boiler Service BH8, Oxford Road

Last week, we had a customer from the BH8 area reach out to us requesting her annual boiler service after realizing her water was taking longer to heat up.

I drove to Oxford Road and arrived within the hour to conduct the service. The boiler was a Worcester Bosch Greenstar 40 CDi, and I started by running it to identify any flaws. Indeed, the water was taking longer to heat up, and some rooms were not receiving enough heat. I also bled the radiators and realized the water had a slightly brownish hue which indicated limescale build-up in the tubes. The filters had also corroded which can be attributed to the low water alkalinity in Bournemouth.

To clear out the limescale, I prepared a power flush which broke down the limescale deposits and cleared the corrosion.

 

I also added a water softener component to her boiler, which would prevent the limescale buildup from happening again. The process took about four hours and we bled the radiators a second time. This time the water did not appear discoloured, and we were sure that the limescale was completely gone.

Everything you need to Know

How often should I have my boiler serviced

It’s recommended to have your boiler serviced once a year. Annual servicing keeps it running efficiently, helps maintain your manufacturer’s warranty, and ensures it’s safe to operate, particularly important before the winter months.

What are the signs my boiler needs repairing?

Common warning signs include no hot water or heating, unusual noises (banging, whistling, or gurgling), low pressure, leaks around the unit, error codes on the display, or the boiler repeatedly cutting out. If you notice any of these, contact us as soon as possible to avoid a full breakdown.

Is it safe to use my boiler if it's making a strange noise?

Strange noises can indicate issues such as limescale build-up, a failing pump, or trapped air in the system. It’s best not to ignore them. Switch the boiler off and call us. Our engineers can diagnose and fix the problem quickly.

How long does a boiler service take?

A standard boiler service typically takes between 45 minutes and 1 hour. Our engineer will inspect, clean, and test all key components and advise you of any concerns found during the visit.

What happens during a boiler service?

During a boiler service, our Gas Safe engineer will inspect all key components, check for leaks or corrosion, test the flue and combustion, clean internal parts, and verify that safety controls are working correctly. You will receive a report on the condition of your boiler at the end of the visit.

What are the signs my boiler needs repairing?

Common warning signs include no hot water or heating, unusual noises such as banging, whistling, or gurgling, low pressure, leaks around the unit, error codes on the display, or the boiler repeatedly cutting out. If you notice any of these, contact us as soon as possible to avoid a full breakdown.

 

Can you repair my boiler on the same visit as the diagnosis?

In many cases, yes. Our engineers carry a range of common spare parts and tools, meaning faults can often be diagnosed and resolved in a single visit. If a specific part needs to be ordered, we will let you know and arrange a follow-up as quickly as possible.

 

Will servicing my boiler reduce my energy bills?

Yes. A well-maintained boiler runs more efficiently, which means it uses less fuel to heat your home. Regular servicing can help reduce energy waste, lower your bills, and extend the overall lifespan of your system.

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If you need a boiler service or urgent repair in Bournemouth or Poole, our Gas Safe engineers are ready to help. Fill in the form below or call us directly to arrange a visit.

Two Senior Heating Services engineers standing in front of a dual boiler installation in Bournemouth
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