Do I need a power flush before getting a new boiler?

A power flush before a new boiler installation protects the new appliance and can be required to maintain the manufacturer's warranty.

Do you power flush oil as well as gas heating systems?

Yes — we cover all makes of gas or oil central heating systems.

How much does a power flush cost?

Cost depends on the size of the system and the degree of contamination. Every quote is free and in writing after we've assessed the system.

Power Flushing

Professional power flushing of central heating systems to remove sludge, dirt and limescale, restoring circulation and improving energy efficiency.

Call 01 265 9898 WhatsApp us Get a Free Quote

4.885 Google reviews

Within a dayUsually, for a power flush

12-month warrantyIn writing, on all our work

No hidden costsFree written quote, valid for 30 days

What Power Flushing Does

Power flushing forces clean water and chemical inhibitor through the heating system at high velocity, dislodging and removing the sludge, dirt and limescale that accumulate in pipework and radiators over time. The result is restored circulation, more even heat across all radiators and a system that your boiler doesn't have to work as hard to maintain.

Two white hot water cylinders with copper pipework and heating controls mounted on brick wall in residential installation

How We Carry Out a Flush

We use specialist flushing equipment connected directly to the heating circuit, and cover all makes of gas or oil central heating systems. After the flush, an inhibitor is added to the system to slow future corrosion and sludge build-up — extending the benefit of the work.

If a flush won't make a meaningful difference, we'll tell you that before raising a quote. Get in touch to book an assessment.

Viessmann or Grant air-to-water heat pump unit installed against brick wall of Irish home

Why choose us

Why homeowners choose DDV

Heat Pump Specialists First

While most local firms are still focused on boilers, D.D.V. Plumbing & Heating Ltd is all in on heat pumps — we install Viessmann and Grant systems and guide every customer through the SEAI grant process from start to finish.
Family-Run, Personal Service

We're a family business with six people on the team — when you call, you're talking to the same people who will show up at your door and do the work.
RGI & SEAI Registered

D.D.V. Plumbing & Heating Ltd is a Registered Gas Installer (RGI) and an SEAI registered installer, so every job is certified to the required standard and your grant eligibility is protected.
No Hidden Costs, Ever

Every quote is free, issued in writing, and valid for 30 days — and if anything unexpected comes up during the job, we discuss it with you before we go any further.

Customer Reviews

★★★★★
"Dave Jnr and his colleague came when he said, did the necessary (plus found my wife's ear ring in the U bend) and charged less than I expected. Couldn't recommend DDV highly enough."
Fergal Ryanvia Google
★★★★★
"Highly recommend. Absolute pros - efficient and friendly"
James Carrollvia Google
★★★★★
"Brilliant service. Totally focused on fixing the problem in relation to a leak under my floor. Informed me all the way along. Highly recommend"
sean o sheehanvia Google

How it works

Call or Contact Us

Get in touch by phone — Dave answers calls himself when he can, and an AI receptionist takes your details on busy days so we can call you straight back.
Free Site Visit

Dave visits your property to assess the job, answer your questions, and take everything needed to put together an accurate quote.
Written Quote Issued

You receive a written quote, free of charge and valid for 30 days, with no hidden costs.
Job Booked In

Once you're happy with the quote, we agree a start date. Most work is booked for the following week, and heat pump installs usually start 3 to 4 weeks after booking.
Work Completed

We carry out the work as quoted, and if anything unexpected comes up, we talk it through with you before going any further.
Certified & Signed Off

You receive your invoice on the day, along with any relevant certification (gas work, heat pump report), and your 12-month workmanship warranty kicks in from completion.

Signs your system may need a power flush

Some radiators barely heating up at all

Blockages in pipework can cut off flow to individual radiators entirely, leaving rooms cold while others overheat.
System taking a long time to heat up

Restricted circulation from sludge and scale forces the boiler to run longer to reach the set temperature, which wastes energy and increases wear.
Getting a new boiler installed

A power flush before a new boiler installation protects the new appliance and can be a requirement for the manufacturer's warranty.

Power Flushing FAQs

: A power flush before a new boiler installation protects the new appliance and can be required to maintain the manufacturer's warranty.
: Yes — we cover all makes of gas or oil central heating systems.
: Cost depends on the size of the system and the degree of contamination. Every quote is free and in writing after we've assessed the system.

Coverage

Areas We Cover for Power Flushing

We cover Dublin. Fast response times across every area listed here.

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Book Power Flushing Today

Call 01 265 9898 Get a Free Quote

Monday to Friday, 8am to 5pm · info@ddv.ie