All 32 London boroughs

Smell gas? Leave the property, avoid switches and flames, and call the National Gas Emergency line free on 0800 111 999 first. Once you're safe, call us on 020 3000 0000 for the repair.

Boiler Guides, Written by Engineers Who Fix Them

Plain-English answers to the questions London asks us every day: what that error code means, what a repair should cost, and when to stop repairing altogether. No jargon, no scare tactics, and every guide ends with what to do next.

Frozen Condensate Pipe: The 10-Minute Winter Fix

A frozen condensate pipe blocks your boiler’s waste drain and shuts the boiler down, usually

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July 24, 2026

Boiler Repair or Replace? How to Make the Honest Call

The rule engineers use: if a repair costs more than half the price of a

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July 20, 2026

Worcester Bosch EA Error: Meaning and How to Fix It

The Vaillant F28 fault code means ignition failure: the boiler attempted to light and could

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July 14, 2026

Vaillant F28 Fault: Causes and Fixes Explained

The Vaillant F28 fault code means ignition failure: the boiler attempted to light and could

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July 9, 2026

Vaillant F22 Fault: What It Means and How to Fix It

F22 means low water pressure. Repressurise to 1.5 bar in five steps, and know when

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July 2, 2026