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Pricing Guide
BOILER INSTALLATION & REPLACEMENT

BOILER REPLACEMENT

(including system powerflush , subject to system condition)

FROM £2400 to £3800

BOILER RELOCATION

(Same room)

FROM £1200 to £1600

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(different room/full relocation)

FROM £1800 to £2500

BOILER CONVERSION

FROM £3200 to £5500

SYSTEM BOILER WITH UNVENTED CYLINDER

FROM £3800 to £6500

ELECTRIC BOILER WITH UNVENTED CYLINDER

FROM £3500 to £6000

We don't just replace boilers- we optimise entire heating system

Prices may vary depending on:
- Boiler model and specification

- Flue type  and length 
- Condition of the existing system
- Required pipework modifications
- Size and complexity of the heating system


 

UNVENTED CYLINDERS INSTALLATION

UNVENTED CYLINDER REPLACEMENT

FROM £1800 to £3200

UNVENTED CYLINDER INSTALLATION

FROM £2000 to £3500

VENTED TO UNVENTED CYLINDER UPGRADE FROM  £2800 to £4500

 

 

 

 

Prices may vary depending on:
- Cylinder size and specification
- Condition of the existing system
- Pipework and discharge requirements
- Mains pressure and required upgrades


G3 certified installation

 

UNDERFLOOR HEATING INSTALLATION

NEW BUILD UNDERFLOOR HEATING

FROM £80 to £110 per m²

RETROFIT UNDERFLOOR HEATING

FROM £130 to £180 per m²

Price includes:
- System design and layout
- Supply and installation of pipework
Manifold and controls
- Installation of low-profile panels (retrofit systems)
- Connection to existing heating system
System filling, testing and commissioning

Retrofit systems are designed to minimise floor height increase and disruption.

Prices may vary depending on:
- Floor area and layout
- Type of system and controls
- Floor construction and insulation
-Number of heating zones

All installations are completed in-house to ensure quality and performance.


 

SPECIALIST PLUMBING

FLOOR-MOUNTED TAP INSTALLATION

FROM £350–£800

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COMPLEX INSTALLATION

(concrete floors, limited access or extensive pipework modifications)

FROM £800 to £1200
 

PIPEWORK ALTERATION

FROM £150 to £500

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COMPLEX PIPEWORK

(hidden pipe runs or major modifications)

FROM £500 to £800

FLOOR BREAK OUT AND REINSTATEMENT 

FROM £250 to £700

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CONCRETE AND STRUCTURAL WORK

FROM £700 to £1500

BESPOKE PLUMBING SOLUTION

FROM £300 to £1000

What’s included:

-Site assessment and planning Pipework modifications and rerouting

- Structural preparation (floor breakout, base installation)

- Accurate positioning and alignment

- System testing and commissioning

Prices include installation and standard materials.

Floor-mounted taps and specialist fixtures are not included and can be supplied by the client or sourced on request
 

We provide a fixed, transparent quote after a full assessment. No hidden costs. 

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       Fixed quote after on - site survey

Nexosters plumbing and heating Swansea logo

© 2026 Nexosters Specialist Plumbing & Heating


Swansea & South Wales

Baxi boiler installation Swansea heating system
Gas Safe registered heating engineer Swansea Nexosters

Reg. No. 642942

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