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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

Vokera Boilers Prices 2026

05th January, 2026 Reviews

Vokera Boilers Prices 2026

Vokera is an established and innovative brand, providing highly efficient home heating, wh...

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Heat Pump Pros and Cons - A Complete Guide for UK 2026

05th January, 2026 Comparisons

Heat Pump Pros and Cons - A Co...

As one of the hottest topics in the industry, heat pumps are being contemplated by homeown...

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How Much Does a Heat Pump Cost? A 2026 Guide

05th January, 2026 Guides

How Much Does a Heat Pump Cost...

Explore the different types, costs, and efficiency of heat pumps in this blog post, illumi...

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Are System Boilers Still Used in 2026?

05th January, 2026 Guides

Are System Boilers Still Used...

System boilers have significantly evolved, featuring cutting-edge technology that enhances...

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Clean Heat Market Mechanism (CHMM) 2026: Updated

05th January, 2026 News

Clean Heat Market Mechanism (C...

The Clean Heat Market Mechanism is a UK policy making boiler manufacturers sell more heat...

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Free Boiler Scheme/Grants 2026 - UPDATED

05th January, 2026 Guides

Free Boiler Scheme/Grants 2026...

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

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UK Government Boiler Scrappage Scheme 2026

05th January, 2026 Guides

UK Government Boiler Scrappage...

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

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Viessmann Heat Pump - 2026 UK Guide

05th January, 2026 Reviews

Viessmann Heat Pump - 2026 UK...

Viessmann offers an impressive range of heat pumps in the UK for 2026, catering to various...

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Ravenheat Boiler - Combi Prices 2026

05th January, 2026 Guides

Ravenheat Boiler - Combi Price...

Ravenheat combi boilers are known for their affordability and efficiency. They include mod...

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Vaillant Boiler Parts 2026

05th January, 2026 Guides

Vaillant Boiler Parts 2026

Vaillant boilers use a variety of parts to ensure efficient operation. This section looks...

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Who Qualifies for a Boiler Grant in 2026?

05th January, 2026 Guides

Who Qualifies for a Boiler Gra...

Boiler grants in the UK assist homeowners in upgrading heating systems to more efficient m...

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Replace Boiler With Heat Pump - Benefits, Costs & Guide (2026)

05th January, 2026 Guides

Replace Boiler With Heat Pump...

Yes, you can replace a gas boiler with a heat pump in the UK. Many homeowners are explorin...

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