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Stephen Day

Gas Safe Engineer

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.

Expertise & Focus Areas

  • 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 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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Boiler Service Glasgow

30th May, 2025 Guides

Boiler Service Glasgow

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

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Worcester Bosch Boilers Reviews

30th May, 2025 Reviews

Worcester Bosch Boilers Review...

Worcester Bosch's 2025 boiler range extends its legacy of providing high-quality heating s...

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Free Boiler Scheme/Grants 2025 - UPDATED

30th May, 2025 Guides

Free Boiler Scheme/Grants 2025...

Navigating the landscape of grants can be complex, with schemes differing in their eligibi...

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How to Prevent Boiler Limescale

30th May, 2025 Guides

How to Prevent Boiler Limescal...

Limescale, primarily composed of calcium carbonate, is a persistent problem in many boiler...

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OpenTherm

30th May, 2025 Guides

OpenTherm

OpenTherm began with the objective of streamlining communications between heating system c...

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Glow Worm Combi Boiler Costs

30th May, 2025 Guides

Glow Worm Combi Boiler Costs

A combi boiler, or combination boiler, is a high-efficiency water heater and a central hea...

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Boiler Service Cost (What To Expect)

30th May, 2025 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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