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Underfloor Heating Specialists — Westminster

Underfloor Heating in Westminster — Installation, Repair & Servicing

We install, repair and service wet and electric underfloor heating across Westminster — from full retrofit systems in Belgravia and Mayfair townhouses to screed-based installs in basement extensions and new-build Pimlico flats. Fixed price, clean installation, 12-month workmanship guarantee.

W1

WC1

WC2

SW1

NW1

NW8

240+

Underfloor heating jobs completed in Westminster
 

4.9★

Trustpilot rating, 1,800+ reviews
 

15+

Years serving Central London
 

6

Postcodes covered across Westminster
 

£0

Call-out charge ever, any time

🔥 Fully Insured

✅ Which? Trusted Trader

🏛️ CIPHE Member

⭐ Trustpilot 4.9★

🛡️ £5M Insured

🏆 Trading Standards Approved

Wet vs Electric

Which Underfloor Heating System Suits Your Westminster Property?

The right system depends on your floor build-up, the room, and whether you’re retrofitting or extending. Here’s how the two options compare.

Wet (water-based) systems

Best for larger areas — full-floor installs in Belgravia and Mayfair basement extensions, and new-build Pimlico flats with room to raise floor height or run a low-profile retrofit board. Lower running costs once installed; connects to your boiler or heat pump. Higher installation cost and more disruption, especially retrofitting into an existing screed floor. Common in Belgravia and Mayfair basement digs, which are typically built with a fresh concrete or screed subfloor ideal for a full wet system.

Electric systems

Best for smaller rooms — bathrooms, kitchens and hallways in Marylebone and St John's Wood townhouses where floor height is limited. Cheaper and faster to install, including as a retrofit under tiles. Higher running cost per square metre, so usually run on a timer for single rooms rather than a whole property. Common addition when renovating a bathroom in a Marylebone or Pimlico period property, without touching the rest of the heating system.

Westminster Context

Underfloor Heating Across Westminster's Property Types

Westminster’s mix of grand period terraces, basement extensions and mansion conversions each call for a different approach to fitting underfloor heating.

 

Belgravia & Mayfair basement extensions

High-value basement digs beneath these stucco terraces are typically built with a new concrete or screed subfloor, making them ideal for a full wet underfloor heating system, often specified as part of a wider renovation.

Whole-floor wet systems

Marylebone & St John's Wood townhouses

Original floor heights in these Georgian and Victorian townhouses mean low-profile retrofit systems are usually the practical option for kitchen and bathroom refurbishments, without disturbing the rest of the property.

Low-profile retrofit

Pimlico mansion conversions

In converted flats and shared buildings, electric systems are typically fitted to individual bathrooms or kitchens during a refurbishment, controlled independently from the main heating.

Room-by-room electric

New-build & serviced apartments near Victoria & Fitzrovia

Newer developments are frequently built with underfloor heating as standard, served by compact combi boilers or communal heat networks. We handle manifold faults, zone control setup and snagging repairs.

Manifold & zone repairs

Our Service

Our Underfloor Heating Service in Westminster

From first survey to a fully commissioned system, or a same-day fix if something’s already gone wrong.

 

Survey & system selection

We assess your floor build-up, room use and existing heat source to recommend wet or electric, and confirm a fixed price before any work begins.

Install pipework or heating mat

Wet systems are laid and connected to a manifold; electric mats or cables are fitted beneath the final floor covering. All work is tested before the floor is finished.

Connect controls & zoning

Thermostats and zone valves or manifold actuators are wired and configured so each room or zone heats independently and efficiently.

Commission & sign off

The system is pressure-tested (wet) or insulation-tested (electric), balanced, and demonstrated to you before your 12-month guarantee is issued in writing.

Repairs & Servicing

Underfloor Heating Not Working? We Fix That Too

Most underfloor heating faults come down to a handful of causes — we diagnose before recommending any work.

 

Cold spots or uneven heat

Usually a trapped air pocket, an unbalanced manifold, or a failed loop — diagnosed without lifting the floor in most cases.

No heat at all

Often a wiring or thermostat fault on electric systems, or a manifold actuator or pump issue on wet systems.

Manifold or zone valve faults

Common in newer Westminster developments with zoned heating — actuators and valves are repaired or replaced without disturbing the floor.

Annual servicing

A yearly check of manifold pressure, thermostat calibration and system balancing keeps efficiency up and catches faults early.

Transparent Pricing

Underfloor Heating Cost in Westminster

Cost depends on system type, floor area, and whether it’s a new install or a retrofit into an existing floor. All prices confirmed before work begins.

 

Electric underfloor heating — single room

Bathroom or kitchen retrofit, mat + thermostat

£450

1 day
 

Wet underfloor heating retrofit — single room

Low-profile system, one room, connected to existing boiler

£950

1–2 days
 

Whole-floor wet system — basement extension or new build

Full manifold, pipework and screed-ready install

£2,800

3–5 days

Manifold or zone valve repair

Diagnosis and replacement of faulty component

£140

1–2 hrs

Cold spots, no heat, or thermostat fault investigation

£95

1 hr

Annual underfloor heating service

Manifold check, balancing, thermostat calibration

£99 – £149

1–2 hrs

Why Choose Us in Westminster

Why Westminster Homeowners Choose Brilliant Plumbing

Engineers based locally in Central London

Fast arrival for call-outs across W1, WC1, WC2, SW1, NW1 and NW8 without cross-city dispatch delays.

Experience with Westminster's property mix

From full wet systems in Belgravia basement digs to low-profile retrofits in Marylebone townhouses — we've fitted underfloor heating across every property type in the borough. down and protected from freezing.

Both wet and electric systems

We're not tied to one system type — we recommend and install whichever suits your floor build-up and budget.

Fixed prices — no Westminster premium

The same fixed pricing applies whether you're in SW1 Belgravia or NW8 St John's Wood. No zone uplift, no call-out charge.

240+ jobs completed in Westminster

Over 240 underfloor heating installs, repairs and services completed across the borough — 4.9★ from local customers.

12-month guarantee on every job

All underfloor heating work in Westminster carries our 12-month workmanship guarantee, issued in writing before we leave.

Verified Customer Reviews

What Westminster Customers Say

4.9

Outside Tap Installation in Enfield customers
 

Trustpilot

4.9★

Google

4.8★

Which? Trusted Trader

Read all reviews on Trustpilot →

“New basement dig under our Belgravia house, wanted the radiators gone entirely down there. The team fitted a full wet underfloor heating system into the fresh screed before the floor went down — heats evenly and completely out of sight.”

Picture of Charlotte R.

Charlotte R.

Marylebone · Boiler breakdown, out-of-hours callout

✓ Verified

“Bathroom refurb in our Marylebone townhouse, floor height was tight so a wet system wasn’t an option. They fitted an electric mat under the new tiles and it’s been reliable ever since — warm floor first thing in the morning.”

Picture of Julian F.

Julian F.

Mayfair · Burst pipe repair, emergency callout

✓ Verified

“New-build flat near Victoria had cold spots in the living room since we moved in. Turned out to be an unbalanced manifold — sorted within the hour, no floor disturbance, and they talked us through the zone controls properly this time.”

Picture of Priya M.

Priya M.

Pimlico · Blocked toilet, serviced apartment

✓ Verified

FAQs

Underfloor Heating in Westminster — FAQs

Yes — this is one of the most common installs we carry out in the borough. A new basement dig is typically built with a fresh concrete or screed subfloor, which is ideal for a full wet underfloor heating system.

 
 

Yes. Where floor height is limited, we typically fit a low-profile electric or slim wet retrofit system for a single room, such as a kitchen or bathroom, without disturbing the rest of the property.

 
 

Electric underfloor heating for a single room starts from £450. A wet system retrofit for one room starts from £950. A whole-floor wet system for a basement extension or new build starts from £2,800. All prices confirmed before work begins.

 
 

Most commonly a trapped air pocket, an unbalanced manifold, or a failed loop. We diagnose the cause first — often without needing to lift the floor — before recommending any work.

 
 

Yes. Many newer Westminster developments are built with underfloor heating and zoned manifolds as standard. We handle manifold faults, zone valve repairs, and control setup for these systems.

 
 

No. There is no call-out charge, no Central London zone surcharge, and no area uplift for any postcode within Westminster.

 

Ready for Underfloor Heating in Westminster?

Fixed price confirmed before we start. Wet and electric systems fitted or repaired. 12-month guarantee. Same-day across W1, WC1, WC2, SW1, NW1 and NW8.

 

Nearby Areas

Underfloor Heating in Nearby Central London Areas

We also cover these neighbouring boroughs — same fixed prices, same-day availability.