Annual Boiler Service

Safety and value guaranteed

Tried, Trusted, Reviewed

Annual boiler service

Given the importance of the gas boiler in our everyday lives and the potential dangers from gas and CO leaks, it’s not surprising that both the HSE and boiler manufacturers suggest that your gas boiler should be serviced at least once every twelve months.

An annual boiler service is essential maintenance, and vital to ensure your trusted gas boiler continues to operate at its optimum efficiency and to prevent any dangerous CO leaks or costly boiler breakdowns.

A Spa day for your boiler

Is your boiler getting a bit old, making strange noises or just not performing the way it used to? Well, you might need a boiler service.

We service gas boilers everyday and have tons of 5 star reviews to vouch for us.

We guarantee to leave you’re boiler performing better than when we got there.


boiler installation and repair London and nearby
boiler repair and installation London and nearby

We run through all the recommended service checks

The annual boiler service will run through all the recommended service checks in the manufacturer’s instructions. Don’t worry if you don’t have the boiler manual
anymore – we have a digital database with thousands of booklets going back 20+ years.

If any seals or gaskets are broken, disturbed or need replacing, we will replace these as part of our service, unlike many other companies who will only do this at an additional cost. Once everything is complete, your engineer will provide you with advice and recommendations specific for your appliance. You’ll also receive a digital certificate for your records.

If any seals or gaskets are broken, disturbed or need replacing, we will replace these as part of our service

The extra value we know you'll love

As well as a full manufacturers service (including the replacement of damaged seals in the boiler), your Heatsy engineer will also check your heating and hot water controls are installed and working correctly, as well as replacing batteries in any wireless controls.

We’ll also inspect the heating system, check the radiators are heating up, remove any air and look out for any leaks or corrosion to the radiators and the pipework.


Lastly, your engineer will take a sample of the central heating water for rapid on site analysis. The result will show the inhibitor, corrosion & PH levels of the system in under three minutes along with recommendations for any corrective action where necessary.

Heating Services London and area by Heatsy
Heatsy your reliable heating engineers London and nearby places

Key to a reliable heating system is proper maintenance

At Heatsy we don’t just service your boiler and leave in 20 minutes like so many in our industry. We check the water quality, balance the heating system, check the water tanks, controls and radiators and we leave you a report with all of our findings and any recommendations so you can make an informed decision in your own time and prevent any major problems before it’s too late.

An emergency boiler repair in London

At Heatsy we specialise in repairing old and new boilers by all manufacturers, we offer a 24/7 same day response service. All our work is guaranteed and if we can’t diagnose the fault with your boiler or heating system we’ll pay you DOUBLE the diagnostics fee. 

Watch the video and see why we insist on powerflushing 90% of our installations, and how we can help if you’re boiler brakes down.

Tried, Trusted, Reviewed

The Heatsy promise:

“We promise to always give 100% in our efforts to help you in your time of need, to never take advantage, overcharge or give you unnecessary advice.

To keep our charges fair, competitive and 100% transparent while keeping our service above and beyond by using only fully vetted, qualified, experienced and skilled tradespeople.

Should you ever have a query about the service you have received, the price you were quoted, or the work we have completed, we promise to treat the situation with the seriousness it warrants and give you the dignity, respect, and honesty you deserve." 

Mr Lee Moloney

As standard, our heating & boiler services come with:

boiler repair with guarantee 12 months

12 Month Guarantee

boiler servicing 5 star reviews

5 Star Reviews

Genuine Manufacturer Boiler Materials

Genuine Manufacturer Boiler Materials

Gas Safe Registered Engineers

Gas Safe Registered Engineers

Heatsy promise to deliver excellent boiler repair services

The Heatsy Promise

Vaillant Advance boiler logo

Our Google Reviews

Heatsy IconHeatsy

Heatsy Ltd, 4 Selsdon Crescent, South Croydon

4.9 67 reviews

  • Avatar Sheshebens Algonquin ★★★★★ 3 months ago
    Heatsy completed our boiler repair quickly and efficiently.
    We called at 12pm and were offered two appointments, 4-6pm that evening or 8-10am the following morning at a lower rate.
    … More As it’s winter and mom was visiting from the US we decided to get the emergency appointment.
    The engineer called and text before he arrived and kept me updated throughout the work.
    Coming from the states we’re used to great customer service and I must say Heatsy made me feel right at home.
    Your slogan should be ‘British class with American service’
    I’ll be telling all the other moms at the next PTA meeting 😊
  • Avatar Zacharie Paimboeuf ★★★★★ 3 months ago
    Great boiler service, the engineer took everything apart and cleaned the inside and changed the seals.
    He also took a water sample from the boiler which showed the system was dirty
    … More and he was able to book me in to get my system cleaned without me needing to do anything.
    Very helpful and professional.
    Thank you
  • Avatar Sarah Luetchford ★★★★★ a month ago
    Was extremely helpful and explained what needed doing and was honest about what I needed to consider. Once he had finished and I messaged with an enquiry my engineer offered to come … More back and have a look. They sent a follow up message to ensure everything was still working and to check it was ok. Would definitely use again.
  • Avatar Martin Gilbert ★★★★ 3 months ago
    I had a combined boiler service with landlords gas safety certificate.
    The company were very professional and my tenant was very happy with the engineer.
    All paperwork and certificates
    … More were emailed in real time and I could track the engineer which is a nice touch.
    Four stars as the appointment had to be rescheduled due to over running work.

Other services we offer

System boiler

New Boiler Installation

If you are interested in having a new boiler, we can inform you about the best and affordable solution. we offer a variety of boiler installation packages to suit most budgets.

boiler repair and installation London and nearby

Annual Boiler Service

We service gas boilers everyday and have tons of 5 star reviews to vouch for us. We guarantee to leave you’re boiler performing better than when we got there.

Boiler & Heating Services for Landlords

Services for Landlords

With automated service reminders, real time job reports, engineer tracking and a cloud based storage system we offer hassle-free compliance for all your rental properties.