Boiler help & advice

Compare the best combi boilers in 2026, including Worcester Bosch, Alpha, Vaillant and Viessmann, based on warranty coverage, hot water performance, e...

Stephen Day

Gas Safe Engineer

Read article

Choosing the best boiler brand comes down to reliability, warranty support, efficiency, and long-term performance. Here are the top boiler manufacture...

Stephen Day

Gas Safe Engineer

Read article

Combi boilers are by far the most popular type of home heating system in the UK, and with good reason, providing many benefits to their owner and the...

Stephen Day

Gas Safe Engineer

Read article

In this guide, we’re going to be explaining what each of these terms mean so you know exactly what it is you need to be looking for when choosing your...

Stephen Day

Gas Safe Engineer

Read article

Find out whether the size of your combi boiler will make any difference to its capabilities.

Stephen Day

Gas Safe Engineer

Read article

Based on data from over 7000 boiler installations completed by iHeat in the past 12 months, we’ve analysed the true cost of new boilers across the UK.

Stephen Day

Gas Safe Engineer

Read article

A simple guide to the smallest combi boilers that fit inside kitchen cupboards and tight spaces.

Stephen Day

Gas Safe Engineer

Read article

If your boiler keeps losing pressure, the cause is usually a leak, trapped air, or a faulty component. Learn what to check and how to fix it.

Stephen Day

Gas Safe Engineer

Read article

Many UK homeowners are surprised to learn that air conditioning systems do not automatically qualify for 0% VAT in the same way as some other energy-s...

Stephen Day

Gas Safe Engineer

Read article

Turning off the water supply might cause concern about the boiler, but most boilers are built to function without a direct water supply. This is becau...

Stephen Day

Gas Safe Engineer

Read article

Common issues include low water pressure or failure to ignite, indicated by specific error codes. Understanding these codes is crucial for quickly dia...

Stephen Day

Gas Safe Engineer

Read article

Understanding the key components of combi boiler pipework is essential for making informed decisions about installation, maintenance, and operation.

Stephen Day

Gas Safe Engineer

Read article