Mended / Services
Five things,
done properly.
We don't pretend to do everything. Our specialism is gas, heating and hot water — engineered cleanly, signed off correctly, and explained clearly. Every job comes with documentation and a same-day quote.
Manufacturers require an annual service to keep your warranty valid. We work to manufacturer specification — every component checked, cleaned and tested — and issue a full digital service report.
What's included:
- Combustion analysis. Calibrated FGA reading on every flue, every visit.
- Visual inspection of the flue, gas pipework, casing and seals.
- Pressure check of the expansion vessel — recharged if needed.
- Magnetic filter drain & flush (where fitted).
- Safety devices tested including overheat thermostat & PRV.
- Service report emailed to you, kept on file by us. Reminder when next is due.
Got a Worcester, Vaillant, Ideal, Baxi, Viessmann, Glow-worm or Potterton? You're covered.
Three other plumbers couldn't crack it? That's our favourite kind of call. We use the manufacturer service manual for every diagnosis — never guesswork — and we carry the most common parts on the van.
Common repairs we handle:
- Low pressure / repressurising — and finding the leak that caused it.
- Pump & diverter valve replacement on combi systems.
- PCB and gas valve faults — diagnosed with manufacturer test sequences.
- Flue / sealed combustion repairs to safe operating standards.
- Cold radiators — power flush, magnetic dosing, sludge removal.
- Frozen condensate pipes — fast fix and a long-term solution.
Honest answer: sometimes the right call is replacement, not repair. If that's where you are, we'll tell you straight and quote both options.
We install premium boilers from the brands we trust — and we power-flush your system before, not after. Every install is benchmarked, registered with Gas Safe, and signed off with a Building Regs notification.
What you get:
- On-site survey — heat loss calculation, cylinder check, flue route, gas supply assessment.
- Fixed written quote with itemised costs. No surprises mid-job.
- Premium-only brands: Worcester Bosch, Vaillant, Viessmann, Ideal Logic.
- Power flush of the existing system + magnetic filter installed as standard.
- Smart controls — Hive, Nest, Tado, Honeywell — fitted and programmed.
- Up to 12-year manufacturer warranty on Worcester & Vaillant installs.
- Benchmark book + Gas Safe certificate handed over on completion.
If you let property in Essex or Suffolk — single Airbnb to portfolio of 50 — your annual gas safety check is the legal foundation of your tenancy. We do them properly, not as a tick-box.
What's covered:
- Tightness test of the gas installation.
- Visual inspection & combustion analysis of every gas appliance.
- Flue integrity test & ventilation check.
- CP12 certificate issued digitally and emailed within 24 hours.
- Renewal reminders — we email you a month before expiry, every year.
- Portfolio discounts for landlords/agents with 5+ properties.
Letting agents — get in touch about a managed-portfolio rate.
An unvented cylinder is a pressurised system. By law it needs annual servicing by a G3 qualified engineer to keep your warranty valid and your home safe. We hold the qualification — and the kit to do the job properly.
Service includes:
- Expansion vessel pre-charge check & recharge.
- Temperature & pressure relief valve test & clean.
- Tundish & discharge pipework visual inspection.
- Immersion heater test on dual-fuel installs.
- Anode replacement if required for warranty compliance.
- Service certificate for your manufacturer warranty file.
Replacement cylinders supplied & fitted — Megaflo, Telford, Joule and more.
If it's water or gas, chances are we can sort it. Beyond boilers we cover the full range of domestic plumbing — with the same tidy finish you'd expect from any Mended job.
Examples:
- Leak detection & repair — visible and hidden.
- Tap, shower & valve replacement.
- Designer radiators & heated towel rails supplied & fitted.
- Radiator balancing & thermostatic valve installation.
- Bathroom installations — first & second fix.
- Outside taps & garden water supplies.