05th February, 2026
GuidesWhat Type of Boiler Is Right for Me?
Our guide explores the different types of boilers available, including combi, system, and regular boilers, and provides practical advice on how to cho...
Gas Safe Engineer
05th February, 2026
GuidesWhat is Boiler Pump Overrun? - Funct...
Pump overrun in boilers is a feature that helps cool down the system and manage residual heat. It's essential for maintaining the efficiency and longe...
Gas Safe Engineer
05th February, 2026
GuidesWhat is Boiler Modulation?
A modulating boiler not only adjusts its output to meet the varying heat demands of your home but also works to minimise energy wastage and the wear a...
Gas Safe Engineer
05th February, 2026
GuidesWhat Is An Expansion Vessel?
An expansion vessel is an essential component of a modern boiler system, serving a pivotal role in maintaining pressure levels within central heating...
Gas Safe Engineer
05th February, 2026
GuidesWhat is a Boiler PCB?
Our helpful PCB blog provides a comprehensive explanation of the Printed Circuit Board (PCB) in boilers, detailing its function as the control centre...
Gas Safe Engineer
05th February, 2026
GuidesVokera Boiler Red Light
When a Vokera boiler presents a red light, it often indicates a lockout due to safety mechanisms activating. This may be triggered by a range of fault...
Gas Safe Engineer
05th February, 2026
GuidesVokera Boiler Error Codes - How To F...
Familiarising yourself with common Vokera fault codes and their meanings can be crucial in swiftly addressing and resolving boiler issues, ensuring mi...
Gas Safe Engineer
05th February, 2026
GuidesViessmann F4 Fault
Boiler error codes are critical indicators that help identify specific issues within a boiler system. They serve as a first step towards troubleshooti...
Gas Safe Engineer
05th February, 2026
GuidesViessmann F2 Fault
Error codes are integral to the effective operation and maintenance of modern boilers. They serve as a vital diagnostic tool for identifying issues wi...
Gas Safe Engineer
05th February, 2026
GuidesVaillant 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...
Gas Safe Engineer
05th February, 2026
GuidesF83 Vaillant Error Code
Boiler error codes are essential indicators assisting in the diagnostics of potential issues within a boiler system. They operate as a shorthand, allo...
Gas Safe Engineer
05th February, 2026
GuidesVaillant F62 Fault Code
Error codes on boilers can be a confusing and frustrating topic, here at iHeat we want to make everything about boilers as straightforward as possible...
Gas Safe Engineer