Services

Get Your Combi Boiler Installation For Energy Efficient Hot Water

Trusted Boilers have one of the largest choices of high-quality modern combi boilers in South London, offering low-cost installations, servicing, and maintenance.

  • tick Modern energy-efficient boilers from Baxi, Worcester Bosch, Viessmann, Vaillant, Ideal, and Main
  • tickFast, personalised service
  • tick15 years industry experience
  • tickGas Safe registered and OFTEC accredited
  • tickLow prices and 40% deposit required on some models.
  • tickOngoing maintenance and repairs are also available.

We offer a complete installation service, starting with a home visit or video call survey to help us understand your needs. We will then guide you through a choice of boilers to meet your home heating needs and budget, order everything for you, then install your boiler at a convenient time, test it, and sign it off.

How much does a combi boiler cost?

A ‘combi’ or combination boiler is a compact unit that provides both hot water and central heating from a single unit. Unlike a traditional boiler or a system boiler, a combi does not need a separate hot water storage cylinder or cold-water tank, as it heats water directly on demand.


This makes combi boilers perfect for apartments and smaller 1-to-3-bedroom homes with limited space and modest hot water demand, giving you an efficient and convenient way of delivering hot ater instantly whenever needed.

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Frequently asked questions

Can my new boiler go in the same place?

Typically yes for like for like models, but this will be subject to a site survey. Get in touch today to book a free site survey with one of our team, and we are happy to recommend a new boiler that matches the footprint of your old one.

Will my new boiler be bigger or smaller than my current boiler?

This depends on the capacity of the boiler you pick and how old your current boiler is. If you are upgrading to a larger capacity boiler, it may be bigger than your old one. However, please bear in mind that newer models are often more compact than older boilers. You may be able to purchase a more powerful or higher capacity boiler with an equal or smaller footprint than your current unit. Also, some brands, makes, and models are larger or smaller than others. Get in touch to find out more.

What warranty will my new boiler have?

Most new boilers come with a standard manufacturer’s warranty of five years, but this depends on the boiler you pick. Some offer a 10-year warranty. To claim on your warranty, you will need to service your boiler once a year and demonstrate an annual service history.

How long will my new boiler last?

A well-maintained new modern boiler should provide a good service life of 10 to 15 years. However, this can depend on the make and model. Even an entry-level combi boiler from a quality manufacturer should last you 10 years, as long as you keep up with its servicing.

Brands we install

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We have highly trained engineers

Accreditations

      

  

vaillant-accredited-installer-1
Gas Safe
viessmann-boiler-installer
G3 UNVENTED CERTIFIED-1

  

Provides regular annual inspections to multiple properties and does this with no fuss and tenants very happy with his style and efficiency when completing the works. Eric knows his stuff and provides sound advice on what is needed.
J Gandhl
Came out to fix a problem on the day we asked if they were available, and actually explained and solved the problem required, for a reasonable price. Breath of fresh air after an awful experience with a previous company who clearly couldn’t care less and quoted stupidly inflated prices. So so happy with Eric’s work, thank you.
Ally
Eric was brilliant very friendly and professional knows his stuff he set up our Nest Thermostat. Someone you can trust. Will use Trustedboiler again and recommend to family and friends.
G&T
Office was Extremely efficient, prompt and answered all questions. Replies and correspondence was quick and detailed. Engineer was the same! Polite, quick and professional. I don’t think you would get better service and installation anywhere else. Thank you!!
Geoff
Eric and his team responded at short notice, did all the hard work in finding the problem with our boiler, ordering the parts needed and getting the problem solved asap
Adam