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Stephen Day

Gas Safe Engineer at iHeat

Stephen Day is a Gas Safe registered and FGAS certified engineer with over 20 years of hands-on experience in the heating, cooling, and renewable energy industry, specialising in boiler installations, air conditioning, and heat pump systems.

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About Stephen Day

Stephen Day is a Gas Safe registered and FGAS certified engineer with over 20 years of hands-on experience in the heating, cooling and renewable energy industry.

Throughout his career, Stephen has designed, installed and maintained thousands of systems across homes and businesses in the UK. His background on the tools, combined with his directorship role at iHeat, gives him a rare understanding of both the technical and operational sides of the industry.

He has helped to secure Which? Trusted Trader accreditation all with a focus on delivering great service and long-term value for customers. He also writes for the iHeat blog, sharing practical advice and explaining heating topics in plain, helpful language.

Stephen continues to stay up to date with the latest heating technologies, building regulations and low-carbon innovations.

Gas Safe ID: 5910722

Expertise

  • Boiler systems and installation
  • Heat pumps and hybrid heating systems
  • Gas safety and compliance
  • System design
  • Renewable and low-carbon technologies
  • Technical training


Articles by Stephen Day are reviewed by iHeat’s technical team for accuracy and reliability.

Stephen Day's latest articles

Boiler Repair Birmingham

20th May, 2026 Guides

Boiler Repair Birmingham

Boiler repairs are a critical aspect of maintaining a household's functionality and safety...

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Boiler Pump Not Working

20th May, 2026 Guides

Boiler Pump Not Working

A boiler pump is a vital part of a heating system. It ensures water is circulated efficien...

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Boiler Plus - 2026 Guide

20th May, 2026 Guides

Boiler Plus - 2026 Guide

Boiler Plus is a set of energy efficiency standards introduced by the UK government. It ai...

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Boiler Overheating

20th May, 2026 Guides

Boiler Overheating

When a boiler overheats, it can cause significant issues. Components inside can get damage...

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Boiler Installation Manchester

20th May, 2026 Guides

Boiler Installation Manchester

A comprehensive understanding of the process is essential to ensure that the installation...

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Boiler Installation London

20th May, 2026 Guides

Boiler Installation London

Selecting the appropriate boiler for your London home involves understanding the different...

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Boiler Installation Liverpool

20th May, 2026 Guides

Boiler Installation Liverpool

Types of Boilers There are three primary boiler types to consider for a home in Liverpool:...

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Boiler Installation Glasgow

20th May, 2026 Guides

Boiler Installation Glasgow

Boiler installation is a critical process entailing the careful selection and fitting of a...

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Boiler Installation Bolton

20th May, 2026 Guides

Boiler Installation Bolton

The expense incurred from installing a boiler can vary significantly based on factors such...

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Boiler Installation Birmingham

20th May, 2026 Guides

Boiler Installation Birmingham

When contemplating a new boiler installation in Birmingham during 2026, homeowners should...

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Boiler in Bathroom

20th May, 2026 Guides

Boiler in Bathroom

Installing a boiler in a bathroom can be safe and legal in the UK, but specific regulation...

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Boiler Filter - Mega Guide

20th May, 2026 Guides

Boiler Filter - Mega Guide

A boiler filter is an essential component for maintaining the efficiency and longevity of...

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