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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

What is the Fastest Way to Get a New Boiler?

09th October, 2025 Guides

What is the Fastest Way to Get...

The fastest way to get a new boiler is to work with iHeat, a company that offers fast inst...

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Emergency Boiler Replacement

09th October, 2025 Guides

Emergency Boiler Replacement

Lets explore the process of assessing and replacing an older, antiquated broken down appli...

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Are You About to Spend Too Much on a New Boiler?

09th October, 2025 Guides

Are You About to Spend Too Muc...

According to a 2017 study by uSwitch, 18% of UK households had experienced a boiler breakd...

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Checking Your Boiler When Buying a New Home

09th October, 2025 Advice

Checking Your Boiler When Buyi...

Buying a new home is a massive investment and you’ll likely consider a number of different...

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Can A New Boiler Increase the Value of My House?

09th October, 2025 Advice

Can A New Boiler Increase the...

Have you considered a new boiler to increase the value of your home? We run through why th...

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Why Buying a Budget Boiler May Cost You More in The Long-Run

09th October, 2025 Advice

Why Buying a Budget Boiler May...

Finding out your boiler needs replacing can be incredibly frustrating, especially during t...

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Boiler Warranty Invalid? Warranty Checklist

09th October, 2025 Guides

Boiler Warranty Invalid? Warra...

This article explains what a boiler warranty covers, what actions can invalidate it, and h...

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Boiler Installation Cost Calculator

09th October, 2025 Guides

Boiler Installation Cost Calcu...

Unlock the insights you need to estimate boiler costs in the UK accurately. Our comprehens...

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ATAG Boiler Prices

09th October, 2025 Reviews

ATAG Boiler Prices

With nearly 70, yes 70 years of designing and manufacturing boilers behind them, ATAG can...

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Are Old Boilers Expensive to Run?

09th October, 2025 Guides

Are Old Boilers Expensive to R...

Old boilers can be expensive to run, as they are often less efficient and more prone to br...

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Alpha Combi Boiler Costs

09th October, 2025 Guides

Alpha Combi Boiler Costs

The price of an Alpha combi boiler is contingent upon several factors, such as the specifi...

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Glow Worm Boiler Pressure

08th October, 2025 Guides

Glow Worm Boiler Pressure

To keep your Glow-Worm boiler working properly, it's essential to maintain the right press...

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