Heating System Flush

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Central Heating System Flushing – Services & Pricing

Over time, sludge, rust, and debris can build up inside your central heating system. This reduces heating performance, creates cold spots in radiators, strains your boiler, and leads to higher energy bills.

We offer two flushing methods depending on your system’s condition: Power Flush and MagnaCleanse. Before we begin, we carry out a free water quality check to help you choose the right option.

Free Heating System Water Quality Check

Included with every flushing quote or boiler service.

We test your heating system water to assess the level of sludge, corrosion, and chemical balance. Based on the results, we’ll recommend whether your system needs:

MagnaCleanse

For moderate contamination.

PowerFlush

For heavily contaminated systems

This check helps ensure your system gets the right treatment without unnecessary work — and helps protect your boiler warranty by ensuring proper cleaning and inhibitor dosing.

Central Heating System Flushing Options:

Power Flush

from £450

A deep chemical clean using a high-velocity pump and magnetic filtration to remove sludge, rust, and debris from the system.

Ideal for:

  • Cold spots in radiators

  • Noisy boiler (e.g. kettling)

  • Very dark or sludgy radiator water

  • Poor circulation and slow heat-up times

Includes:

  • Full chemical flush with high-flow machine

  • Magnetic filtration throughout the process

  • Cleaning chemicals and corrosion inhibitor

  • Radiator balancing (if needed)

  • Certificate of completion

Covers up to 7 radiators – £35 per additional radiator

MagnaCleanse Flush

from £350

A fast, lower-pressure clean using an Adey MagnaCleanse unit and magnetic filters.

Ideal for:

  • Systems with moderate or early-stage sludge

  • Preventative maintenance during boiler installations

  • Homes where a power flush may be excessive

Includes:

  • MagnaCleanse system cleaning

  • Cleaning chemicals and corrosion inhibitor

  • Filter cleaned (if one is fitted)

  • Certificate of completion

Covers up to 7 radiators – £30 per additional radiator

Magnetic Filter Installation

from 259£

Installing a magnetic filter helps capture sludge before it reaches your boiler, protecting it long term.

  • Including filter + inhibitor

  • Installed near the boiler return pipe (subject to access and layout)

Important pricing notes for plumbing and heating services in Chingford, Walthamstow, Woodford, Leyton, Wanstead, and surrounding London areas – clear quotes, no hidden fees, clean and professional service

Important Notes

  • Pricing is based on standard domestic systems with reasonable access
  • Some neglected systems may require follow-up cleaning or treatment
  • If components (e.g. pumps, valves) fail due to pre-existing wear during flushing, we’ll advise and quote separately before proceeding
  • We always obtain customer approval before carrying out any additional work
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