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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

Combi Boiler Pipes Explained

30th May, 2025 Guides

Combi Boiler Pipes Explained

Understanding the key components of combi boiler pipework is essential for making informed...

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Pressure Release Valve Boiler

30th May, 2025 Guides

Pressure Release Valve Boiler

A pressure release valve (PRV) on a boiler is a critical safety component ensuring that th...

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Why Does My Boiler Fire Up in the Night?

30th May, 2025 Guides

Why Does My Boiler Fire Up in...

Occasionally, boilers turn on during the night due to specific triggers. These include the...

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How to Reset Glow Worm Boiler

30th May, 2025 Guides

How to Reset Glow Worm Boiler

Taking care of your Glow-worm boiler means not only understanding how to reset it but also...

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Do I Need a Carbon Monoxide Detector with a Combi Boiler

30th May, 2025 Guides

Do I Need a Carbon Monoxide De...

Boilers can produce carbon monoxide (CO), a dangerous and potentially deadly gas, through...

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Where is the Boiler Fuse Located?

30th May, 2025 Guides

Where is the Boiler Fuse Locat...

A boiler fuse is a small yet crucial electrical component found within a boiler system. It...

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Potterton Boiler Flashing Green

30th May, 2025 Guides

Potterton Boiler Flashing Gree...

A Potterton boiler displaying a flashing green light can indicate various issues. When no...

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Boiler Service Liverpool

30th May, 2025 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 Birmingham

30th May, 2025 Guides

Boiler Service Birmingham

Boiler servicing in Birmingham not only ensures a warm environment but also plays a critic...

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Boiler Service Manchester

30th May, 2025 Guides

Boiler Service Manchester

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

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Boiler Service London

30th May, 2025 Guides

Boiler Service London

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

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Boiler Service Edinburgh

30th May, 2025 Guides

Boiler Service Edinburgh

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

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