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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

Can a Boiler Explode?

20th May, 2026 Guides

Can a Boiler Explode?

Boilers are a key part of many homes, but they can pose risks if not properly maintained....

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Why Buying a Budget Boiler May Cost You More in The Long-Run

20th May, 2026 Advice

Why Buying a Budget Boiler May...

Finding out your boiler needs replacing can be incredibly frustrating, especially during t...

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Why Is Boiler Water Treatment Important?

20th May, 2026 Guides

Why Is Boiler Water Treatment...

In boiler systems, water treatment involves several techniques. These methods remove impur...

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Boiler Warranty Invalid? Warranty Checklist

20th May, 2026 Guides

Boiler Warranty Invalid? Warra...

This article explains what a boiler warranty covers, what actions can invalidate it, and h...

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Boiler Upgrade Scheme

20th May, 2026 Guides

Boiler Upgrade Scheme

The Boiler Upgrade Scheme is a pivotal initiative aimed at supporting the decarbonisation...

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What temperature should my boiler be set at for central heating?

20th May, 2026 Guides

What temperature should my boi...

Boilers are the heartbeat of a home's central heating system, efficiently managing the bal...

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Boiler Service Manchester

20th May, 2026 Guides

Boiler Service Manchester

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

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Boiler Service Liverpool

20th May, 2026 Guides

Boiler Service Liverpool

The price of a boiler service is influenced by various factors including the type of boile...

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Boiler Service Edinburgh

20th May, 2026 Guides

Boiler Service Edinburgh

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

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Boiler Service Cost (What To Expect)

20th May, 2026 Guides

Boiler Service Cost (What To E...

A boiler service is a thorough inspection of a boiler system by a qualified engineer.

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Boiler Service Bolton

20th May, 2026 Guides

Boiler Service Bolton

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

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UK Government Boiler Scrappage Scheme 2026

20th May, 2026 Guides

UK Government Boiler Scrappage...

The UK Boiler Scrappage Scheme was a government initiative designed to promote the upgrade...

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