Heating System Power Flush

When sludge builds up in your radiators, it can greatly affect how they heat your rooms. Caused by the gradual corrosion of water on the metal parts of your central heating system over many years, this sludge or ‘magnetite’ reduces the amount of heat transferred from your radiators. Magnetite tends to settle within radiators where the flow rate is lower. In turn, your boiler must work longer and harder for a radiator to reach the temperature on your thermostat.

A system power flush clears this sludge away, helping to restore the efficiency of your radiators so you can save on your energy bills.

Customer reviews

  • And a quick note to everyone at Aspect to say thank you for being such an efficient, effective and easy company to deal with. Fantastic service! Much appreciated.

    Alex, Herne Hill, SE24

  • Another great experience from Aspect. Joe helped to solve my radiator issue. He took the time to explain how to troubleshoot any issues in the future and checked everything several times to make sure it was all working well following his work. Highly recommend.

    Benjamin, Kingston-Upon-Thames, KT2

  • I called Aspect with an urgent issue, they managed to fit me in the same day at the time I needed, they turned up on time and dealt with the issue immediately, and offered lots of good advice.

    Fatima, Streatham, SW16

No hidden extras

What you get from Aspect

  • Experienced & vetted tradespeople
  • 24 hour availability for all trades
  • Dedicated technical support team
  • Aspect Guarantee on workmanship
  • Peace of mind from trade accreditation

Occasional extra costs

  • Parts and materials used
  • Collection of parts and materials

We won’t charge you for

  • Cost of parking
  • Fuel or travel time
  • Congestion Charge
  • ULEZ charge

How does power flushing work?

A power flushing machine pumps clean water and a special cleaning solution through your central heating system to remove the dirt, scale and sludge inside. To start, we connect the machine to the pipework, flush for at least 2 hours and then remove the dirty water.

We then flush each radiator individually for around 30 minutes, before flushing the whole system at once until it’s clean – removing the magnetite that’s known for blocking radiator heat transfer. We’ll then vent and test the system. The process usually takes a full day, depending on the size and type of heating system you own.

Your engineer completes the system power flush by adding the correct amount of inhibitor that helps reduce corrosion in the future. We can also perform a chemical flush at a later date (done by simply running the boiler to let the chemicals circulate), which is a good way to keep your system clean a year or more after power flushing.

Want to learn more about power flushing? We’ll give you a call.  Request a callback

Our guarantee and accreditations

We’re fully trade accredited to power flush radiators and work on any part of your heating system. Aspect is registered with Gas Safe and a member of the Building Engineering Services Association (BESA). We also provide a 12-month guarantee for all workmanship that our engineers provide.

When you book a system power flush from a member of our team, you can count on getting a professional service and the friendly advice you need.

Account customers

We have a dedicated team of account handlers to support multi-site customers and commercial properties across London and the nearby areas. These include: Restaurants, Bars, Offices, Retail, Landlords, Letting Agencies, Hotels, Schools, Embassies, Care Homes and more.

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