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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

How To Diagnose Boiler Fan Issues And Fix Them Safely

20th May, 2026 Guides

How To Diagnose Boiler Fan Iss...

A boiler fan is an important part of modern boilers. It ensures proper combustion by pushi...

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What Does Boiler ErP mean? - Energy Efficiency Guide

20th May, 2026 Advice

What Does Boiler ErP mean? - E...

When it comes to buying a new boiler, there can be some unfamiliar terms or phrases that d...

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Boiler Control Panel

20th May, 2026 Guides

Boiler Control Panel

A boiler control panel is the interface that allows users to interact with their heating s...

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Best Shower for Combi Boiler

20th May, 2026 Guides

Best Shower for Combi Boiler

A combination boiler, commonly known as a combi boiler, is an advanced heating unit that p...

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Best Eco Friendly Boilers for 2026

20th May, 2026 Guides

Best Eco Friendly Boilers for...

The UK Government has set out its net-zero carbon emissions by 2050 target and have starte...

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Best Condensing Boilers 2026

20th May, 2026 Guides

Best Condensing Boilers 2026

Condensing boilers are considered to be some of the most efficient boilers out there on th...

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The Benefits of Using a Hive Thermostat for Your Smart Home

20th May, 2026 Guides

The Benefits of Using a Hive T...

If you're looking to upgrade your home to a smart home, one of the best investments you ca...

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Baxi Platinum+ System Boiler Review

20th May, 2026 Reviews

Baxi Platinum+ System Boiler R...

At iHeat, we pride ourselves on offering the finest heating solutions to our customers. To...

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Baxi Megaflo Compact System - Boiler Review

20th May, 2026 Guides

Baxi Megaflo Compact System -...

The Baxi Megaflo Compact System boiler is a high-efficiency heating solution, designed wit...

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Baxi Boiler Not Working, No Error Code

20th May, 2026 Guides

Baxi Boiler Not Working, No Er...

In the realm of boiler maintenance, two elements take centre stage: diagnosing issues and...

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At What Age Should You Replace A Boiler?

20th May, 2026 Advice

At What Age Should You Replace...

Your boiler is one of the most important appliances in your home. It is responsible for ke...

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Are System Boilers Still Used in 2026?

20th May, 2026 Guides

Are System Boilers Still Used...

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

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