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Witten by Bernard Morgan (Engineer) & Adam Apperley (Marketing).
Published: February 19, 2024. Updated: February 19, 2024

What is Blue Flame Technology?

What is blue flame technology

Technological advancements have paved the way for more efficient heating solutions. Blue flame technology stands out for oil boilers.

We’ll shed light on blue flame technology, contrasting it with traditional yellow flame. And highlight its significance in the heating industry.

Understanding Blue Flame Technology

A blue flame signifies complete combustion, achieving temperatures ranging from 1,400-1,650 degrees Celsius (2,600-3,000 degrees Fahrenheit). This makes it the hottest and most efficient form of combustion for gas and oil appliances.

In contrast, yellow or red flames indicate incomplete combustion. This leads to wasted gas, reduced efficiency, and a higher risk of producing dangerous carbon monoxide.

Blue flame technology utilises a process where heating oil is converted into a high-pressure vaporised spray. This is premixed with air and ignited to produce a cleaner, blue flame. This advanced combustion method results in much lower nitrogen oxide (NOx) emissions. This is in comparison to traditional methods.

The Advantages of Blue Flame Boilers

  • Energy Efficiency and Cost Savings: Blue flame boilers operate at higher efficiencies due to complete combustion. This means more heat is generated from the same amount of fuel compared to yellow flame boilers. This translates into significant cost savings on fuel bills and a reduced carbon footprint.
  • Environmental Benefits: With lower NOx emissions, blue flame technology contributes less air pollution. This is crucial in the current climate, where reducing emissions is vital for protecting the environment.
  • Safety and Reliability: Blue flames indicate that the fuel is burning well. This minimises the risk of carbon monoxide production. This makes blue flame boilers safer for residential use and ensures a more reliable heating system with fewer emissions.
  • Flexibility in Installation: Blue flame oil boilers can be installed both inside and outside of properties. This offers flexibility depending on the available space and specific needs.

The Disadvantages of Blue Flame Boilers

  • Noise: A blue flame boiler uses a higher-powered fan to ensure the vaporised oil and air is pushed into the combustion chamber under pressure. This fan tends to make Blue Flame boilers slightly louder than yellow flame alternatives. But this is more noticeable outside where the flue comes from your home.
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Future-Proofing with Blue Flame Technology

Blue flame technology is starting to ensure that oil boilers are moving towards achieving net-zero carbon emissions.

Manufacturers like Navien have embraced blue flame technology. This ensures their boilers are efficient and low in emissions and compatible with future biofuels like Hydrotreated Vegetable Oil (HVO), further enhancing their sustainability.

Are you after a blue flame oil boiler?

If you need a new or replacement blue flame boiler, get an online quote (it takes less than 1 minute), and you’ll get an instant price. But why choose Boilerhut:


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