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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 Installation London

19th February, 2026 Guides

Boiler Installation London

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

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Boiler Service London

19th February, 2026 Guides

Boiler Service London

A typical Annual Boiler Service includes a visual inspection to identify any obvious fault...

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Boiler Service Bolton

19th February, 2026 Guides

Boiler Service Bolton

Boiler servicing comprises a set of inspections and tests conducted by a qualified enginee...

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Boiler Installation Glasgow

19th February, 2026 Guides

Boiler Installation Glasgow

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

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Boiler Service Glasgow

19th February, 2026 Guides

Boiler Service Glasgow

Boiler servicing is a comprehensive check involving numerous standard procedures to ensure...

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Boiler Repair Glasgow

19th February, 2026 Guides

Boiler Repair Glasgow

In Glasgow, the repair of boilers is a service paramount to the comfort of residents, ensu...

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Boiler Installation Edinburgh

19th February, 2026 Guides

Boiler Installation Edinburgh

When installing a new boiler, homeowners must consider the type, the brands available, and...

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Boiler Service Edinburgh

19th February, 2026 Guides

Boiler Service Edinburgh

In Edinburgh, ensuring the optimal performance and safety of your boiler is paramount.

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Boiler Repair Edinburgh

19th February, 2026 Guides

Boiler Repair Edinburgh

When engaging with boiler repair in Edinburgh, it's imperative to have an appreciation for...

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Boiler Installation Liverpool

19th February, 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 Manchester

19th February, 2026 Guides

Boiler Installation Manchester

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

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Boiler Service Manchester

19th February, 2026 Guides

Boiler Service Manchester

Boiler service in Manchester serves as an essential practice for maintaining your heating...

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