Why your boiler works less after a flush
Sludge narrows the pipes, so the boiler runs flat out for less heat. See what changes once the water flows freely again.
42 sec
New boiler offer
30% off a powerflush when we fit your new boiler
A new boiler deserves a clean system. Book a powerflush for your boiler installation day and we’ll take 30% off the powerflush.
Just ask for the offer when you get your boiler quote.
Why do both together
Why flush the system when a new boiler goes in?
Old sludge doesn’t leave with the old boiler
Over the years, black sludge (magnetite) and debris settle in your pipes and radiators. Left in, it’s carried straight into the new boiler, where it can clog and damage the heat exchanger.
It’s what the guidance says
Building Regulations guidance (Approved Document L) says a heating system should be thoroughly cleaned and flushed before a new boiler is fitted, then treated with inhibitor, following the British Standard BS 7593.
It keeps your warranty paperwork right
Boiler manufacturers usually expect the system to be cleaned before their boiler goes in, and it’s recorded on the Benchmark checklist that comes with it.
Better from day one
With clean water flowing freely, the new boiler doesn’t have to work as hard. Radiators heat evenly, the house warms up faster, it’s easier on your bills, and the boiler lasts longer.
Why not just a quick flush? A quick flush only runs water through. A powerflush uses a dedicated machine, cleaning chemicals and strong, reversed flow through each radiator in turn to shift the sludge that has settled.
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The offer
New boiler from Addisons? Get 30% off your powerflush.
- When Addisons fits your new boiler, book the powerflush at the same time and we’ll do it on installation day with 30% off.
- No end date, and it applies anywhere Addisons fits a boiler.
- Carried out by our sister company, Kent Powerflush, with a white Norstrom powerflush machine.
- You get a powerflush certificate to keep with your boiler paperwork.
- Ask for the offer when you get your boiler quote.
Want to learn more?
See what a powerflush does
Three short films from Kent Powerflush, our sister company.
How the powerflush machine works
The white Norstrom machine at work, from the cleaner going in to the water running clear.
58 secAlmost too good
Our lighter take on what happens when the heat finally gets everywhere. Ghosty approves.
43 sec
Gas Safe No. 660156- 15+ years in the trade
- Every job guaranteed
- Free quotes
- Clean-up included
Getting a new boiler?
Get your free boiler quote and ask for the powerflush offer.
Offer terms
New boiler + powerflush offer (30% off the powerflush)
- The offer applies when Addisons Plumbing & Heating supplies and installs a new natural gas boiler at your home.
- The powerflush is booked together with your new boiler and carried out on your installation day by our sister company, Kent Powerflush.
- You get 30% off Kent Powerflush’s standard powerflush price for your system.
- One discounted powerflush per boiler and home. The offer applies anywhere Addisons fits a boiler.
- The offer depends on a quick check that your system is suitable for a powerflush. If it isn’t, we’ll tell you why.
- The discount can’t be exchanged for cash or combined with any other offer.
- This offer has no end date.
- These terms don’t affect your statutory rights.