Plumbing & heating, demystified.
Articles, tips and seasonal guides from the KBH engineers.
Boiler repairs in London: a homeowner's guide
What a typical boiler repair costs in London, common faults and when to repair vs replace.
Boiler repairs10 most common boiler faults (and what they cost to fix)
F22, F75, no pressure, no hot water — diagnose your boiler error before you call.
Boiler repairsWhen to replace your boiler instead of repairing it
Five signs it's time for a new boiler and how much you could save in energy bills.
Boiler installationHow much does boiler installation cost in London?
Combi, system and heat-only boiler prices fully installed, with finance options explained.
Boiler installationCombi vs system boiler — which is right for your home?
A simple guide to choosing between combi, system and heat-only boilers for London properties.
Boiler installationBest boiler brands for 2026
Worcester, Vaillant, Ideal and Viessmann compared on reliability, warranty and price.
Boiler installationBoiler finance: 0% APR and pay monthly explained
Spread the cost of a new boiler with finance from £25/month — eligibility and tips.
Emergency plumberEmergency plumber checklist: what to do in the first 15 minutes
Burst pipe? Major leak? Follow this step-by-step before the engineer arrives.
Emergency plumberHow to find and turn off your stop tap
Every London home should know where the stop tap is. Here's how to find and use yours.
Emergency plumberBurst pipe in London — what to do next
Stay calm, isolate water and electricity, then call. Our triage checklist explained.
Gas safety certificatesGas safety certificates (CP12) in London — landlord guide
Costs, legal duties and how often you need a CP12 as a London landlord.
Gas safety certificatesCP12 vs CP17 — which certificate do you need?
The difference between landlord and commercial gas certificates explained in plain English.
Gas safety certificatesA landlord's annual gas safety duties
Annual checks, record keeping and tenant notifications — what's required by law.
Central heating repairsCentral heating repairs: cold radiators and pressure loss
Diagnose cold spots, banging pipes and low pressure before you book an engineer.
Central heating repairsPower flushing: what it is and when you need one
How a power flush works and why it could restore your heating's efficiency.
Central heating repairsSmart thermostats: Hive, Nest or tado°?
Compare the leading smart thermostats and find the right fit for your home.
Plumbing maintenanceAnnual boiler service — what's included and why it matters
Skipping a service can void your warranty. Here's what an engineer actually checks.
Plumbing maintenance10 winter plumbing tips for London homes
Avoid frozen pipes, leaks and boiler breakdowns with this seasonal checklist.
Plumbing maintenanceHow to spot a hidden water leak at home
Signs you may have a leak behind walls or under floors — and what to do next.
London plumbing servicesChoosing a London plumber: the checklist
Gas Safe, insurance, reviews and guarantees — what to verify before you hire.