Diesel vs. Kerosene: What Happens When You Use Diesel in a Kerosene Furnace?

The question of whether you can use diesel in a kerosene furnace is a common one, particularly for those looking to save money or who find themselves in a situation where kerosene is unavailable. While the two fuels share some similarities, there are crucial differences that make using diesel in a kerosene furnace a risky and potentially dangerous proposition. This blog post will delve into the reasons why substituting diesel for kerosene is a bad idea and provide a comprehensive guide to understand the implications of such an action.

The Similarities and Differences Between Kerosene and Diesel

Both kerosene and diesel are refined from crude oil, but they undergo different processing methods, resulting in distinct chemical compositions and properties.

Kerosene is a lighter fuel, typically with a lower viscosity and a shorter chain of hydrocarbon molecules. This makes it easier to vaporize and ignite, making it suitable for use in furnaces, lamps, and certain types of stoves.

Diesel is a heavier fuel with a higher viscosity and longer hydrocarbon chains. It’s designed for use in diesel engines, where it’s ignited under high pressure and temperature.

Why Diesel is Not a Suitable Substitute for Kerosene

While both fuels are petroleum-based, using diesel in a kerosene furnace can lead to several issues:

• Incomplete Combustion: Diesel’s heavier composition makes it more difficult to burn completely in a kerosene furnace. This results in incomplete combustion, leading to the production of soot, carbon monoxide, and other harmful byproducts.
• Soot Buildup: The incomplete combustion of diesel in a kerosene furnace causes soot to accumulate rapidly within the combustion chamber and other components. This buildup can restrict airflow, hinder heat transfer, and eventually lead to a malfunction or fire hazard.
• Damage to the Furnace: Diesel’s higher viscosity and different chemical composition can damage the internal components of a kerosene furnace. The fuel lines, burner nozzle, and other parts are designed for kerosene, and the use of diesel can cause clogging, corrosion, and premature wear.
• Health Risks: The incomplete combustion of diesel releases harmful pollutants, including carbon monoxide, which is a colorless, odorless gas that can be deadly. Exposure to these pollutants can cause respiratory issues, headaches, dizziness, and other health problems.
• Fire Hazard: Diesel is more flammable than kerosene. Its higher flash point means it can ignite at a lower temperature, increasing the risk of a fire hazard if used in a kerosene furnace.

The Potential Consequences of Using Diesel in a Kerosene Furnace

Using diesel in a kerosene furnace can have serious consequences, including:

• Reduced Heating Efficiency: Incomplete combustion reduces the heat output of the furnace, making it less effective in heating your home.
• Increased Maintenance Costs: Soot buildup and damage to the furnace components will require frequent cleaning and repairs, increasing your maintenance costs.
• Safety Concerns: The increased risk of fire and the production of harmful pollutants pose significant safety concerns for you and your family.
• Voiding the Warranty: Using diesel in a kerosene furnace will likely void the manufacturer’s warranty, leaving you responsible for any repairs or replacements.

What to Do if You’re Out of Kerosene

If you find yourself in a situation where you’re out of kerosene, it’s best to avoid using diesel in your furnace. Here are some alternative solutions:

• Contact a Fuel Supplier: The simplest solution is to contact a fuel supplier and order a delivery of kerosene.
• Find a Local Kerosene Retailer: You can also try to find a local retailer that sells kerosene.
• Use an Alternative Heating Source: If you have access to other heating sources, such as a fireplace, wood stove, or electric heaters, you can use them temporarily until you can obtain kerosene.

The Importance of Using the Right Fuel

It’s crucial to use the correct fuel type for your furnace. Using the wrong fuel can lead to serious consequences, including damage to your furnace, health risks, and fire hazards. Always refer to the manufacturer’s instructions and recommendations for the fuel type and specifications.

Understanding Fuel Labels and Specifications

Fuel labels and specifications provide valuable information about the fuel’s properties and suitability for specific applications. Pay attention to the following details:

• Fuel Type: Ensure that the fuel label clearly indicates the type of fuel, such as kerosene or diesel.
• ASTM designation: The American Society for Testing and Materials (ASTM) sets standards for various fuel types. Look for the ASTM designation on the fuel label to verify its quality and suitability.
• Flash Point: The flash point is the lowest temperature at which a fuel’s vapors can ignite. Kerosene has a higher flash point than diesel, making it safer to use in furnaces.

Takeaways: The Bottom Line

Using diesel in a kerosene furnace is a bad idea and should be avoided. The differences in fuel properties and the potential consequences make it a risky and potentially dangerous choice. Always use the correct fuel type for your furnace and follow the manufacturer’s instructions and recommendations.

Top Questions Asked

Q: Can I use diesel in my kerosene heater?

A: No, you cannot use diesel in a kerosene heater. The same reasons apply as for kerosene furnaces. Diesel will lead to incomplete combustion, soot buildup, and damage to the heater.

Q: What happens if I accidentally put diesel in my kerosene furnace?

A: If you accidentally put diesel in your kerosene furnace, stop using it immediately. Turn off the furnace and contact a qualified technician to inspect and clean the system. You may need to replace the fuel lines, burner nozzle, and other components that have been affected by the diesel.

Q: Can I mix kerosene and diesel?

A: No, you should never mix kerosene and diesel. Mixing these fuels will create an unstable mixture that can cause problems with combustion and damage your furnace.

Q: Can I use kerosene in a diesel engine?

A: No, you cannot use kerosene in a diesel engine. Kerosene is too light and flammable for a diesel engine. It will not ignite properly and can damage the engine.