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- Email: info@befix.co.uk
About Us
Whether it’s a small repair or a big emergency, our skilled tradespeople are here to help with a smile. We know how much your property means to you, and we’ll treat it like our own. Let’s get your place fixed up—give us a shout!
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- 227B Nether St, London N3 1NT
- 020 8058 4241
- info@befix.co.uk
- Mon–Fri: 7:00 AM – 10:00 PM Sat–Sun: 9:00 AM – 8:00 PM
Boiler Installation in Marylebone
- Fast & reliable boiler installation
- Expert guidance every step of the way
- Certified Gas Safe engineers
- Guaranteed quality & efficiency
Or reach out for assistance, guidance, or to schedule an appointment
From Baker Street flats to Harley Street townhouses, Marylebone’s boiler jobs rarely look the same twice, and BeFix prices each one after seeing it, not before. Installation starts from £1,500, carried out by Gas Safe registered engineers (No. 967796), part of our wider boiler installation london coverage. Most new boilers go in within a single day, with finance available and every job backed by a written quote before work starts.
Flat / no cylinder wanted
Combi boiler
£1,500 – £3,750
All-in-one and compact, the usual fit for smaller Marylebone flats and conversions.
Larger house, multiple bathrooms
System boiler
£1,500 – £3,500
Pairs with a cylinder to hold reserve hot water for period homes with several bathrooms.
Keeping existing tank & cylinder
Regular boiler
£1,500 – £3,500
Like-for-like replacement where the existing tank and cylinder stay in place.
Boiler Installation Costs in Marylebone
The final price depends on the boiler you need and how complex the job is: a like-for-like combi swap in a flat is quicker and cheaper than converting a period townhouse from a tank-fed system, relocating the boiler, or replacing pipework and radiators. Rather than quote a single advertised figure that ignores what your job actually involves, we scope the price to your property after a free survey, so the quote you receive reflects the work you’re actually paying for.
System and regular installs share the £1,500 starting point with combi because that figure assumes the existing cylinder, tank and pipework can be reused as-is. Converting a system from scratch, relocating it, or fitting a new cylinder pushes the price toward the £3,500 top end. Boiler finance is available, letting you spread the cost over monthly payments; ask your engineer when you get your quote.
Why Marylebone Homes Need Specialist Installation
Marylebone’s housing stock changes within a few streets. Much of the area, roughly 95 acres between Marylebone Road, Wigmore Street, Hallam Street and Marylebone High Street, sits within the Howard de Walden Estate, which holds the freehold on over 800 properties here. Period townhouses near Harley Street typically come with an airing cupboard, a loft tank, and several bathrooms drawing hot water at once. Modern flats near Baker Street are usually built around a single kitchen or utility cupboard, running on mains pressure with no loft space to work with. The quieter residential streets in between mix both types, often with converted flats sitting inside older buildings. The right boiler for each depends on that existing layout, not just on budget.
| Property type | Typical layout | Recommended boiler | Why |
|---|---|---|---|
| Modern flat near Baker Street | Single cupboard, no loft or tank | Combi | Combines heating and hot water in one unit, no cylinder needed |
| Period townhouse near Harley Street | Loft tank, airing cupboard, multiple bathrooms | System or Regular | Uses the existing cylinder and copes with several bathrooms drawing hot water together |
| Converted flats on residential streets | Mixed, some tanks, some mains pressure | Combi or System | Depends on what the existing pipework already supports |
Our free site visit checks your existing pipework, water pressure and available space before we recommend a boiler type. That layout question comes up on almost every Marylebone job, whether it’s a Georgian townhouse conversion off Wimpole Street or a purpose-built block near the station.
Our installation process
1
Free survey and assessment
An engineer visits to check access, existing pipework and the best position for the new boiler.
2
Written, itemised quote
A clear price breakdown before any work is booked in — no vague "from" figure.
3
Installation day
Most straightforward swaps take around 8 hours and are completed within a single working day; more complex jobs may need longer.
4
Fitted by a Gas Safe engineer
All work carried out under registration number 967796.
5
Safety testing & registration
Every new boiler is commissioned, tested and registered — a gas safety certificate is available if you need one.
6
Warranty
12 months' workmanship cover from Befix, plus up to 12 years' manufacturer warranty depending on the model.
Boiler Brands We Install
We install boilers from eight manufacturers, and we’re an Accredited Installer for four of them: Worcester Bosch, Vaillant, Ideal and Baxi. That status is only granted after specific product training, and it’s what lets us register the top end of the manufacturer’s warranty window, up to 12 years, on eligible models from these brands, rather than the shorter cover a non-accredited installer’s customers get.
Worcester Bosch
Accredited installer
Baxi
Accredited installer
Vaillant
Accredited installer
Ideal
Accredited installer
Keston
Installed & serviced
Remeha
Installed & serviced
Main
Installed & serviced
Viessmann
Installed & serviced
Gas Safe Registered & Fully Insured
Gas Safe registered
Number 967796, verifiable on the official Gas Safe Register at any time.
Public liability insured
for the duration of every job.
10+ years' experience
per engineer, including older, awkward-access properties common in Marylebone.
BeFix is Gas Safe registered under registration No. 967796. You can check this directly on the Gas Safe Register website before booking any work. We also carry public liability insurance, and every engineer working on your installation has more than ten years of hands-on gas and heating experience.
This isn’t a marketing extra, it’s a legal requirement for anyone doing gas work in your home: anyone working on domestic gas appliances must be Gas Safe registered and competent in that specific area of gas work, according to the Health and Safety Executive. Always ask to see your engineer’s Gas Safe ID card, which lists exactly what gas work they’re qualified to carry out.
See Our Recent Work
Verified reviews from recent installs
Join the thousands of satisfied London homeowners who trust us for warm, comfortable homes all year round.
Get Started with Your Boiler Installation Today
Whether you need a quick swap or a comprehensive heating upgrade, our team is ready to help. With transparent costs, fast turnaround, and top-rated customer care, we make boiler installation stress free.
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Areas We Cover Near Marylebone
Frequently Asked Questions
How much does a new boiler installation cost in Marylebone?
A new boiler installation in Marylebone typically costs between £1,500 and £3,750, depending on the boiler type and how much work the job involves. Combi boilers range from £1,500 to £3,750, while system and regular boilers typically run £1,500 to £3,500. You'll get an exact, written price after a free site survey.
How long does boiler installation take?
Most straightforward boiler installations in Marylebone are completed within a single working day, usually around 8 hours. Jobs that involve relocating the boiler, converting from a tank-fed system, or upgrading pipework can take longer, and your engineer will confirm the timeline during your free survey.
What's the best boiler for a Marylebone period townhouse vs a modern flat?
Modern flats near Baker Street usually suit a combi boiler, since there's no loft space or tank to work around. Period townhouses near Harley Street, which often have an airing cupboard and multiple bathrooms, tend to work better with a system or regular boiler that uses the existing cylinder. The right choice depends on your property's actual layout and hot water demand.
Are you Gas Safe registered?
Yes. BeFix is Gas Safe registered under registration No. 967796, and you can verify this directly on the Gas Safe Register website. Every engineer who works on your installation is Gas Safe registered and carries an ID card confirming exactly what gas work they're qualified to do.
Do you offer finance?
Yes, boiler finance is available for new installations in Marylebone, letting you spread the cost over monthly payments instead of paying the full amount upfront. Ask about finance options during your free survey or quote.
What warranty comes with a new boiler installation?
Every BeFix installation includes a 12-month workmanship warranty covering our labour. On top of that, boilers carry up to 12 years' manufacturer warranty depending on the model, which we register on your behalf.