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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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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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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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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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iHeat Support Gas Safety Week 2025

11th September, 2025 Guides

iHeat Support Gas Safety Week...

Gas Safety Week 2025 is an important annual event that raises awareness of the dangers of...

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Alpha E-Tec NX Combi Boiler Review

04th September, 2025 Reviews

Alpha E-Tec NX Combi Boiler Re...

As a leading online boiler installation company, iHeat is committed to providing customers...

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What Is A Condensate Pipe?

15th August, 2025 Advice

What Is A Condensate Pipe?

The condensate pipe allows water to be safely drained away from your home, let's drill int...

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Ferroli Boiler Prices

15th August, 2025 Reviews

Ferroli Boiler Prices

In this blog we will be exploring some of Italian heating giant Ferroli’s best boilers, ta...

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Worcester Bosch Greenstar 8000 Life (Combi) Boiler Review

15th August, 2025 Reviews

Worcester Bosch Greenstar 8000...

Thinking of buying a Worcester Bosch Greenstar 8000 Life Boiler? Find out iHeat's opinion...

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Average Energy Bill UK

12th August, 2025 Guides

Average Energy Bill UK

The average electricity bill in the UK can vary based on many factors like location, consu...

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Home EV Charging Costs

12th August, 2025 Guides

Home EV Charging Costs

Electric Vehicle (EV) chargers are quantified by their power output in kilowatts (kW). Ele...

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How to Reset Viessmann Boiler

12th August, 2025 Guides

How to Reset Viessmann Boiler

Resetting a boiler is an important step when dealing with various system faults or issues....

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