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01 · Ask
Diagnose before you call
Tell the AI what's leaking, dripping or rumbling. It tells you whether you need a plumber, a gas engineer, or a drain specialist — and how urgent it is.
Fit a shower pump.
Boost a gravity-fed shower — twin pump sized to bar pressure, plumbed and Part P-wired by a plumber.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
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Gas Safe vs WaterSafe, boiler warranty conditions, unvented cylinder rules. The plumber brief covers the regs most homeowners learn the hard way.
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Top tips
Hiring a plumber, without the regret.
Four moves that separate a smooth job from a nightmare.
Always ask for the Gas Safe ID.
If gas work is part of the job, the engineer must show their Gas Safe registration card. Verify the number at gassaferegister.co.uk before they touch anything.
Get three written quotes.
Plumbing prices vary wildly by job and area. Three quotes shows you the market — anything more than 20% out from the others is a flag.
Insist on parts receipts.
For boiler parts, valves and cylinders, ask for manufacturer receipts. Genuine parts come with warranty; refurbished kit often doesn't.
Hold final payment until tested.
Pay in stages, not upfront. Hold the last 10–20% until you've run hot taps, flushed the system and seen the certificate.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Hourly call-out rateHigher in London
£40–£90/hr
Tap or mixer replacement
£80–£250
Radiator installationInc. valves + balancing
£200–£600
New combi boiler installed
£1.8k–£4.5k
Full bathroom plumbingExcl. tiles + suite
£1.5k–£6k
Emergency leak call-outOut-of-hours
£120–£350
!
Quote spread is typically ± 18% — always get 3 quotes.
At a glance
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Plumber explained
If you've got a gravity-fed system (cold tank in the loft, hot tank in airing cupboard) and weak shower flow, a pump is the answer. Combi-boiler homes don't need one and shouldn't fit one.
What's involved
- Check system type — must be gravity-fed (combi pumps void warranty)
- Locate pump on solid surface, vibration-isolated
- Plumb hot and cold lines with isolation valves and check valves
- Wire 230V supply (Part P notifiable if new circuit)
- Prime, vent and test under load
Typical UK costs (2026)
| Item | Cost |
|---|---|
| 1.5 bar twin pump supply + fit | £350–£600 |
| 2.0–3.0 bar twin pump supply + fit | £450–£800 |
| Labour only (you supply pump) | £180–£350 |
What to check
Pump output (bar) needs matching to shower head — 1.5 bar is ample for a standard head, 2.0+ for a rainfall or dual shower. Negative-head pumps are needed if the cold tank is below the shower height.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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