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FAIRMONTMECHANICAL GROUP

Commercial & domestic

Boiler Installation, Repairs & Servicing in London

New boiler installations, breakdown repairs and annual servicing for homes and commercial premises.

Some of the brands we install, service and repair

  • Baxi logo
  • Glow-worm logo
  • Potterton logo
  • Vaillant logo
  • Viessmann logo
  • Worcester Bosch logo

We work on most other makes too. If yours is not listed, just ask.

Whether your boiler has stopped working or it is time to replace it, we cover the whole job — diagnosis, repair, annual servicing, and full replacement where a repair no longer makes sense. Repairs are charged at our published call-out rates. Replacements are quoted after a free survey, because the right boiler depends on the property, the existing pipework and how the building is used.

What we cover

  • Breakdown diagnosis and repair
  • New boiler installation and replacement
  • Annual servicing and safety checks
  • Controls, thermostats and timers
  • Pipework, pumps and expansion vessels
  • Landlord and commercial premises work
  • Installation
  • Repairs
  • Servicing
Fairmont boilers work in London

Pricing

Transparent pricing

Clear call-out fees, no surprises

  • Most common

    Weekday — Daytime

    Mon–Fri · 8am – 7pm

    £150

    call-out

    Includes the first 60 minutes of labour

  • Weekday — Evening

    Mon–Fri · 7pm – midnight

    £180

    call-out

    Includes the first 60 minutes of labour

  • Weekend

    Sat–Sun · 8am – midnight

    £195

    call-out

    Includes the first 60 minutes of labour

How our pricing works

Additional time
£85 per hour after the first hour, billed in 15-minute increments (£21.25 each) — you only pay for the time you use.
Parts charged separately
Any parts are quoted and supplied only with your approval, so you stay in control of the cost.
Call-out fee
A call-out fee applies to every visit. New customers settle the call-out fee after the visit.
Payment
Card payment taken on site, and we always provide an invoice.

Installing something new?

Installations are not priced from a list. Boilers, heat pumps, air conditioning, MVHR and coldrooms all have to be sized and specified for the building, so we survey the site first and give you a fixed written quote. The survey is free.

Request a free survey

We respond to survey requests within 24 hours.

Contact

Get in touch

Broken down? Call or message us — that is always fastest. For installations and quotes, send us the details and we will arrange a free survey.

Opening hours
8am – midnight, 7 days a week
Same-day attendance across London