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Guides

Expert guides and advice to help you make informed decisions.

What is a Low Loss Header?

20th May, 2026

Guides

What is a Low Loss Header?

A low loss header is an essential part of a heating system. It acts as a bridge between the primary circuit of a boiler and the secondary circuits. Th...

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Stephen Day

Gas Safe Engineer

What is a Heat Exchanger?

20th May, 2026

Guides

What is a Heat Exchanger?

Heat exchangers are pivotal devices within a boiler system, playing a crucial role in transferring heat.

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Stephen Day

Gas Safe Engineer

What is a Gas Supply Pipe?

20th May, 2026

Guides

What is a Gas Supply Pipe?

A gas supply pipe is an essential part of any property with a gas boiler. Its main job is to carry natural gas from the meter to the boiler, where the...

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Stephen Day

Gas Safe Engineer

Vokera Boiler Flashing Green Light - How to Fix

20th May, 2026

Guides

Vokera Boiler Flashing Green Light -...

The green light is part of the boiler's diagnostic system; a flashing signal often points towards specific problems.

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Stephen Day

Gas Safe Engineer

Viessmann Combi Boiler Costs

20th May, 2026

Guides

Viessmann Combi Boiler Costs

Viessmann combi boilers are renowned for their efficiency and technological advancement.

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Stephen Day

Gas Safe Engineer

Vaillant PCB

20th May, 2026

Guides

Vaillant PCB

A Vaillant boiler Printed Circuit Board (PCB) is a vital part of a modern boiler system. It acts as the central control unit for the boiler, regulatin...

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Stephen Day

Gas Safe Engineer

Vaillant Boiler Flue Extension

20th May, 2026

Guides

Vaillant Boiler Flue Extension

This guide dives deep into what flue extensions are, why they are important, and how to install them effectively. Readers can also learn about the var...

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Stephen Day

Gas Safe Engineer

Vaillant Comfort Mode (and Flashing C on a Vaillant Boiler)

20th May, 2026

Guides

Vaillant Comfort Mode (and Flashing...

Vaillant Comfort Mode is a feature available on Vaillant boilers designed to provide a consistently warm environment.

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Stephen Day

Gas Safe Engineer

Vaillant Combi Boilers

20th May, 2026

Guides

Vaillant Combi Boilers

At iHeat We’ve joined forces with Vaillant UK to become the first online company to install Vaillant boilers.

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Stephen Day

Gas Safe Engineer

Vaillant Combi Boiler Costs

20th May, 2026

Guides

Vaillant Combi Boiler Costs

As Vaillant continues to innovate, integrating smart technology and improving energy performance, their boilers maintain a strong reputation for relia...

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Stephen Day

Gas Safe Engineer

Vaillant Boiler Red Light

20th May, 2026

Guides

Vaillant Boiler Red Light

Understanding what the red light and associated fault codes mean is vital for boiler owners. It ensures that the appropriate steps can be taken to rec...

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Stephen Day

Gas Safe Engineer

Vaillant Boiler Parts 2026

20th May, 2026

Guides

Vaillant Boiler Parts 2026

Vaillant boilers use a variety of parts to ensure efficient operation. This section looks at common replacement parts and specific components unique t...

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Stephen Day

Gas Safe Engineer