Advice from qualified engineers

Plain-English guides to boilers, electrics and landlord safety, written by the team that does the work.

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Boiler being tested with a flue gas analyserGuide

Landlord safety certificates explained

Gas safety records, EICRs and alarms: what the law requires, how often, and the deadlines that catch landlords out.

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Worcester Bosch boiler neatly fitted between kitchen cupboardsGuide

How to choose the right boiler

The differences between boiler types, how to pick the right one for your home, and what a proper installation includes.

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EICR codes explained

What each observation code on an EICR means, what makes a report unsatisfactory, and what to do about it.

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Combi boiler fitted neatly into a kitchen alcoveGuide

Best combi boilers for London homes

Which combi boiler suits your home, by property size and budget, and what's actually worth paying more for.

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Worcester Bosch boiler with neat copper pipework in a hallwayGuide

Comparing boiler brands: why we fit ATAG

Why ATAG is our Standard and Premium boiler of choice, and how it compares to the brands you've actually heard of.

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Modern boiler with a neat pipework cover, ready for a system cleanGuide

Power flush vs MagnaCleanse: do you need one?

What a power flush, a MagnaCleanse and a standard clean actually do, and which one your system needs before a new boiler goes in.

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Vaillant boiler with new pipework and magnetic filterGuide

Magnetic filters vs scale reducers explained

Two small devices that quietly protect a new boiler for years — what each one does and why London's hard water makes both worth having.

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Vaillant boiler with wireless heating controlsGuide

Boiler Plus and programmable thermostats explained

The government rule behind why every new combi boiler comes with proper heating controls, explained in plain English.

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Vaillant boiler fitted in a kitchen cupboard, paired with smart controlsGuide

Smart thermostats and OpenTherm explained

The difference between a basic thermostat and an OpenTherm smart thermostat, and whether the upgrade is worth paying for.

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PAT testing explained

What PAT testing actually checks, who's responsible for it, how often it's really needed, and roughly what it costs.

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