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Guides

Expert guides and advice to help you make informed decisions.

F29 Vaillant Fault Code

19th March, 2026

Guides

F29 Vaillant Fault Code

A Vaillant F29 error usually means your boiler has failed to ignite due to a flame loss, often linked to gas supply or ignition issues.

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Stephen Day

Gas Safe Engineer

Fitting A New Boiler to an Old System - Mega Guide

26th February, 2026

Guides

Fitting A New Boiler to an Old Syste...

Replacing an old boiler with a new one involves several key steps that ensure safe and efficient operation.

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Stephen Day

Gas Safe Engineer

This Valentine's Day we’re asking - Does the size of your pipe really matter? 2026

12th February, 2026

Guides

This Valentine's Day we’re asking -...

This Valentine’s Day we want to let you in on a dirty little secret…

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Stephen Day

Gas Safe Engineer

Are Heat Only Boilers Still Used?

09th February, 2026

Guides

Are Heat Only Boilers Still Used?

Despite technological advancements, heat-only boilers remain a prevalent choice for many homeowners due to their reliability and efficiency. Our blog...

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Stephen Day

Gas Safe Engineer

Boiler Parts and Their Functions

06th February, 2026

Guides

Boiler Parts and Their Functions

Understanding the different parts of a boiler and their functions is essential for homeowners and heating professionals alike. Our guide provides an o...

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Stephen Day

Gas Safe Engineer

Baxi Boiler Error Codes

06th February, 2026

Guides

Baxi Boiler Error Codes

The complete guide to what each Baxi boiler error code means and how to fix it!

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Stephen Day

Gas Safe Engineer

Floor Standing Boiler: Worcester Bosch Greenstar CDi Highflow Guide

06th February, 2026

Guides

Floor Standing Boiler: Worcester Bos...

The Worcester Bosch Greenstar Highflow CDi series stands out with its floor-standing design and high hot water flow rates, catering specifically to la...

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Stephen Day

Gas Safe Engineer

One Radiator Not Working In One Room

06th February, 2026

Guides

One Radiator Not Working In One Room

A radiator not heating up properly can be frustrating. There are several reasons this might happen, and identifying the cause is the first step to fix...

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Stephen Day

Gas Safe Engineer

Are Old Boilers Expensive to Run?

06th February, 2026

Guides

Are Old Boilers Expensive to Run?

Old boilers can be expensive to run, as they are often less efficient and more prone to breakdowns than newer models. Our guide explores the costs and...

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Stephen Day

Gas Safe Engineer

F75 Vaillant Error Code

06th February, 2026

Guides

F75 Vaillant Error Code

One of the most common and frustrating error codes your Vaillant boiler can present to you, the F75 warning represents a potentially serious fault con...

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Stephen Day

Gas Safe Engineer

Boiler Circulation Pump Replacement Costs

06th February, 2026

Guides

Boiler Circulation Pump Replacement...

Here at iHeat we’re boiler experts, this includes an extensive bank of component knowledge, and we aim to help educate and inform our customers in any...

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Stephen Day

Gas Safe Engineer

Potterton Boiler (Combi Range)

06th February, 2026

Guides

Potterton Boiler (Combi Range)

Potterton are a brand with a celebrated lineage of expertise when it comes to heating, Potterton boilers today represent some of the best on the marke...

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Stephen Day

Gas Safe Engineer