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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

Air Source Heat Pump Grant 2025

30th May, 2025 Guides

Air Source Heat Pump Grant 202...

An air source heat pump (ASHP) is a device that transfers heat from the outside air to pro...

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What is Central Heating Sludge?

30th May, 2025 Guides

What is Central Heating Sludge...

Sludge in a central heating system is a mix of dirt, rust, and limescale. Over time, these...

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How to Properly Ventilate a Boiler Room for Safety

30th May, 2025 Guides

How to Properly Ventilate a Bo...

Proper ventilation in a boiler room is essential for safety and efficiency. Without adequa...

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Can I Get Help With A New Boiler If I Am Not On Benefits

30th May, 2025 Guides

Can I Get Help With A New Boil...

A free boiler grant is part of a UK government scheme aimed at making homes more energy ef...

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Boiler Heat Exchanger Replacement Cost

30th May, 2025 Guides

Boiler Heat Exchanger Replacem...

A boiler heat exchanger is a crucial component in heating systems. It allows heat transfer...

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Will My Boiler Work If the Water Is Off?

30th May, 2025 Guides

Will My Boiler Work If the Wat...

Turning off the water supply might cause concern about the boiler, but most boilers are bu...

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Boiler Manifold - Role, Function, and Cost Guide

30th May, 2025 Guides

Boiler Manifold - Role, Functi...

A boiler manifold is a vital component in many heating systems. It acts as the central hub...

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Boiler Electrodes

30th May, 2025 Guides

Boiler Electrodes

Boiler electrodes are key components in gas, combi, and electric boilers. They serve cruci...

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AI Technology in Home Heating: The Future of Efficiency?

30th May, 2025 Guides

AI Technology in Home Heating:...

Artificial Intelligence (AI) is changing home heating by introducing smarter, more efficie...

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What is Boiler Dry Cycling?

30th May, 2025 Guides

What is Boiler Dry Cycling?

Boiler dry cycling occurs when a boiler frequently turns on and off without a demand for h...

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Can Your Boiler Work Without Gas? Backup Heating Options for Your Home

30th May, 2025 Guides

Can Your Boiler Work Without G...

Standard boilers typically rely on gas as their primary fuel source. For homes without acc...

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Y Plan Wiring Diagram

30th May, 2025 Guides

Y Plan Wiring Diagram

A Y Plan heating system is a design used in some homes to manage both central heating and...

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