Building the Perfect Beast

5 Best Diesel Heaters for Van Conversion (in 2023)

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Are you feeling the winter chill on your journeys in your van? No matter where your road takes you, staying warm is essential as temperatures drop. Even if you’re camping off-the-grid, lack of access to a power source no longer means a lack of warmth and comfort in your vehicle.

Diesel portable heaters for your van are more efficient than propane heaters and can make all the difference if you’re looking to extend your van’s life into the colder months. Electric heaters are not efficient unless you are on shore power. Whether you’re an avid camper navigating rough terrain or driving long distances during wintertime, you’re sure to benefit from a diesel heater for your van.

diesel heaters for camper van Conversions
Typical Diesel Heater for Camper Vans

How Do Diesel Heaters Work?

Diesel heaters are an essential component of any adventure van, providing warmth and comfort in cold climates. They work by drawing diesel fuel from the vehicle’s fuel tank or a separate stand-alone tank, combining it with an air mixture, and using it to power the heater. This means that you don’t need to lug around a separate fuel source for your heater, making it incredibly convenient. The diesel is burned in a combustion chamber, which produces hot air that is then circulated throughout the van via ducts or fans.

The efficiency of diesel heaters comes from their ability to quickly heat up large areas with minimal fuel consumption. This makes them ideal for long trips where you may not have access to other sources of heating. Additionally, they are relatively easy to operate and maintain, so you don’t need to be a mechanic to understand how they work. With proper care and maintenance, diesel heaters can provide years of reliable service in your adventure van.

Diesel Heaters Are Better Than Propane Heaters

Diesel heaters are a smart choice for those in search of energy efficiency and cost-effectiveness. The high energy density of diesel fuel, obtained from your vehicle’s fuel pump, translates to a longer-lasting supply of fuel compared to propane, at a lower cost per gallon. The remarkable efficiency of diesel heaters means they consume fuel in a virtually imperceptible manner.

Additionally, diesel heaters deliver dry heat…drier than their propane counterparts. Condensation buildup can be a persistent issue for those spending extended periods in a van, and the use of propane heaters only exacerbates the situation. The external venting of diesel heaters results in a notable reduction in the moisture levels of the heat produced, making it a more favorable option for those looking to avoid the adverse effects of condensation.

Diesel Heaters Are Better Than Gasoline Heaters

Gasoline models, when operated at elevated altitudes, are susceptible to the accumulation of carbon. The decrease in air pressure and oxygen levels at higher elevations can lead to incomplete combustion of gasoline, resulting in a risk of carbon buildup issues within the heater after longer periods of time. This buildup of carbon can cause the heater to become clogged and decrease its efficiency, leading to decreased heating performance and even potential damage to the unit.


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Top Diesel Heaters for Vans

Eberspacher Heater D2 Airtronic

The Eberspacher Heater D2 Airtronic is a paramount example of diesel-powered heating excellence, offering dependable and cost-efficient warmth to a diverse array of vehicles, from vans to RVs to boats. With a history spanning several years, this heater has garnered a well-deserved reputation as a leader in its field, consistently ranked among the finest diesel heaters available.

Origins Of The Eberspacher Heater

The Eberspacher Group, commonly referred to as Eberspaecher, is a German conglomerate with roots dating back to 1868. With a focus on providing the finest heating and air conditioning systems for an extensive range of vehicles, from cars to trucks to marine vessels, the company has rightfully earned a distinguished reputation as a trailblazer in the automotive heating and cooling industry. Throughout its long and storied history, the Eberspacher Group has demonstrated a steadfast commitment to innovation, constantly introducing new and improved heating and cooling systems to the market, cementing its position as a leader in its field.

Key Features

The Eberspacher Heater D2 Airtronic is packed with many useful features that make it an ideal choice for van life enthusiasts, RV owners, and boaters. Some of the key features of the D2 Airtronic include:

  • The Eberspacher D2 Airtronic stands out with its compact, lightweight design, making it a breeze to install in a diverse array of vehicles.
  • This diesel-powered heater boasts impressive fuel efficiency, utilizing a minimal amount of diesel to generate ample warmth. Its intuitive control panel and user-friendly display make it incredibly easy to operate.
  • With a suite of versatile heating options, including a low-power setting for overnight warmth, a high-power setting for rapid heating, and a timer function for scheduled use, the D2 Airtronic caters to all your heating needs.
  • Topped off by its reputation for reliable performance, with a long lifespan and minimal upkeep demands, the D2 Airtronic is a top choice for those seeking dependable heating solutions.

Webasto Air Top 2000 ST

Webasto, a popular choice among those seeking top-notch diesel heaters, offers a range of exceptional products for a wide spectrum of vehicles, including camper vans. The Air Top 2000 STC, a diesel-powered heater from Webasto, is meticulously crafted to cater to the unique needs of camper vans and small to medium-sized vehicles, making it a highly sought after option for those in the market for reliable heating solutions. The Air Top 2000 STC affirms Webasto’s standing as a popular choice in the diesel heating industry.

Origins of the Webasto Air Top 2000 STC

For over eight decades, Webasto has reigned supreme as a pioneering force in the world of heating and cooling, consistently delivering cutting-edge solutions for an array of vehicles and boats. The Air Top 2000 STC, one of the company’s latest offerings, embodies the epitome of innovation, with the latest technology seamlessly integrated into its design to guarantee a class-leading heating experience. The Air Top 2000 STC stands as a testament to Webasto’s continued dominance and unwavering commitment to advancing the heating and cooling industry.

Key Features and Benefits of the Air Top 2000 STC

The Air Top 2000 STC is a remarkable piece of engineering, designed to bring unparalleled warmth and comfort to your journeys. Its compact design belies its powerful heating capabilities, which are sure to keep you and your passengers cozy even in the harshest of conditions. Here are some of the standout features and benefits of this amazing diesel heater:

  • High-performance heating: The Air Top 2000 STC provides efficient and effective heating for your van, ensuring that you and your passengers are comfortable even in the coldest of temperatures.
  • Easy installation: The Air Top 2000 STC is easy to install, with a compact design that allows it to fit in even the smallest of spaces.
  • Fuel efficient: The Air Top 2000 STC operates on diesel fuel, which is readily available and more cost-effective than other fuels.
  • Safe and reliable operation: The Air Top 2000 STC is designed to be safe and reliable, with multiple safety features and a durable construction that ensures a long lifespan.
  • Thermostatic control: The Air Top 2000 STC features a thermostatic control knob system that allows you to easily adjust the temperature to your desired level, providing you with complete control over the heating system.
  • Low noise operation: With it’s silent fuel pump the Air Top 2000 STC operates quietly, ensuring that you and your passengers can enjoy a comfortable and peaceful environment, even while the heater is in use.

For those who demand nothing but the best when it comes to heating on the road, the Webasto Air Top 2000 STC is the answer. This top-of-the-line diesel heater transcends mere functionality, delivering a combination of innovative design, exceptional efficiency, and unwavering reliability.

With its compact form factor, the Air Top 2000 STC fits seamlessly into your van, providing the maximum heating performance with minimal intrusion. No more sacrificing precious space for a bulky and cumbersome heater. This is a heater that does more with less, and does it better.


Planar 2D

For those who seek a heating solution that combines exceptional performance with effortless ease, look no further than the Planar 2D diesel heater. This compact and efficient marvel of engineering is designed to bring warmth and comfort to a wide range of vehicles, including camper vans.

The Planar 2D is a high-performance heating powerhouse, delivering warmth and comfort with unrivaled proficiency. No more struggling with poorly performing heaters, or sacrificing precious space for bulky heating solutions. The Planar 2D fits seamlessly into your van, providing maximum heating capabilities with minimal intrusion.

Origins of the Planar 2D

The Planar 2D diesel heater is the epitome of heating excellence, crafted by the masters at Planar Heaters – a trailblazer in the industry and a leading manufacturer of diesel heaters for vehicles and boats. With two decades of dedicated service to their customers, Planar Heaters has established a legacy of quality and innovation, and the Planar 2D is the latest testament to their unwavering commitment to excellence.

Key Features and Benefits of the Planar 2D

  • With the air heater PLANAR 2D you can reduce cost of fuel in compliancy with “no idling zone” regulations
  • Efficient performance and quiet operation
  • Each heater comes with installation kit
  • 2-year warranty on parts and labor
  • Operates on diesel and 12V or 24V power independently from engine
  • Consumes 1 liter of fuel for up to 5 hours of operation
  • Generates 7,000 BTU/h with a strong air flow
  • Fully automated temperature control
  • Self-diagnostic system
  • Compact design and “plug-and-play” installation

For van owners seeking top-notch heating performance, the Planar 2D diesel heater is an exceptional choice. This top-of-the-line product boasts a compact design and reliable operation, making it a leading option for those seeking comfort on the road.

Despite its small stature, the Planar 2D delivers outstanding heating performance, elevating it above the competition. Whether you’re embarking on a long journey or just a quick trip, the Planar 2D diesel heater will keep you warm and cozy inside your van.

Its efficient operation sets it apart from the rest, ensuring that you can enjoy optimal heating without sacrificing precious fuel or energy. With the Planar 2D diesel heater, you can look forward to a more comfortable and enjoyable driving experience, no matter where your adventures take you.


HCALORY T65 5KW-8KW 12V Diesel Air Heater

One of a number of Chinese Diesel heaters, the Model T65 has a high number of satisfied customers and boasts an affordable price for the budget-minded Van lifer. 

Key Features and Benefits of the HCALORY T65

  • Can be used at high altitudes, 1500 meters above sea level.
  • Heater liquid crystal timing
  • Environmentally product, low emissions, low fuel consumption; heater exhaust emissions to meet euro IV engine emissions requirements.
  • Compact structure, easy to install
  • Fuel, electricity, and temperature can be set arbitrarily 
  • Hcalory also offers a portable diesel heater design using the base unit in a suitcase-style configuration


Happybuy 3KW Forced Air Diesel Heater

Diesel Vehicles & Indoor Use: As a warming companion for any diesel vehicle, the forced air diesel parking heater is used widely to heat the interior of cars, RVs, caravans, trucks, ships, etc. Thanks to its compact and portable design, it is also an excellent choice while at home or shopping. This is the first model I purchased for my Ambulance build. It was easy to install and works well.

This is one of the least expensive Chinese heaters available, and performs well…After I did some work on it. After installation, I got the error code for the electric motor failure. After taking the cover off, I found that the turbine assembly was pushed down the shaft and was up against the heat exchanger. I used a screwdriver to lever it away from the case and it ran beautifully afterwards. Whether quality control or rough shipping caused the problem, I can’t say.

Using solar panels to charge the batteries, I can run this heater all day and then into the night. I list this in my top 5 because it is a tenth the cost of the top models and well worth the extra effort to get it installed.

Key Features and Benefits of the Happybuy 3KW

  • Efficient Diesel Air Heater: Heater power: 3 KW; Fuel type: Diesel; Rated Voltage: 12V. Working Temperature:-104℉~+68℉/-40°C~+20°C. 
  • Low Energy Consumption: Fuel consumption: 0.1-0.35 (L/H)/ 0.026-0.092 (Gal/H). The diesel heater features an oil pump that precisely controls the fuel inlet for 100% combustion. 
  • The efficient air heater takes around one gallon of fuel for one night to keep cozy during cold weather. The fuel pump vibration is low, effectively reducing the noise and letting you enjoy a quiet and warm space.
  • Clear LCD monitor & Remote Control: Starting up the bunk heater is so easy. You can start up the bunk heater or adjust the temperature 46℉-95℉/8℃-35℃ by remote control or LCD panel. 

Key Features to Consider When Choosing a Diesel Heater for Your Camper Van

  • When choosing a diesel heater for your van, there are several key features you should consider:
  • Size and weight: Choose a heater that is compact and lightweight, to make it easy to install and store in your van.
  • Efficiency: Look for a heater that provides efficient heating, to save on fuel and ensure you have a warm and comfortable van.
  • Temperature control: Consider a heater with a temperature control system, so you can set and maintain the desired temperature inside your van.
  • Safety features: Make sure the heater you choose has safety features such as overheat protection, flameout protection, and low fuel warning.
  • Maintenance requirements: Consider the maintenance requirements of the heater, including the frequency of cleaning and replacement of filters.
  • Warranty: Look for a heater with a warranty, to ensure you are protected against defects or malfunctions.

Steps to Install a Diesel Heater in Your Van

Installing a diesel heater in your van can be a simple and straightforward process, depending on the model you choose. Before installing the heater, make sure to read the instructions carefully and gather all the necessary tools and materials. Here are the basic steps for installing a diesel heater:

  1. Choose the location: Decide where you want to install the heater, taking into consideration the proximity to the fuel tank and the ventilation requirements. Choose where to run the fresh air intake pipe and exhaust gas pipe. If possible, run the exhaust pipe to mount next to the engine exhaust pipe.
  2. Prepare the fuel system: Connect the fuel line from the tank to the heater, following the manufacturer’s instructions.
  3. Install the heater. Mount the heater in the chosen location, using the brackets provided.
  4. Connect the ventilation system: Install the ventilation ducts and verify that they are properly connected to the heater.
  5. Make sure the electrical wires and switch are connected according to the manufacturer’s instructions.
  6. Test the heater: Turn the heater on and make sure it is working properly.

Fuel Efficiency and Running Costs

When evaluating diesel heaters for your van, it’s imperative to consider their fuel efficiency, as this impacts both your wallet and the environment. A heater that boasts a high heating efficiency rating and minimal fuel consumption will not only reduce diesel costs but also decrease your carbon footprint. Choosing a heater with these characteristics will result in lower running costs, as a heater that burns through an excessive amount of fuel will be pricier to operate in the long run. Hence, when in the market for a diesel heater, it’s advisable to seek out one that not only has a high heating efficiency rating but also a thrifty fuel consumption rate.

When it comes to selecting a diesel heater that’s both efficient and effective, sizing is a critical consideration. While it may seem like a larger heater would provide more heat output, the truth is that it could actually consume more fuel than required, resulting in higher running costs and a larger carbon footprint. On the other hand, if the heater is too small, it may struggle to generate adequate heat to keep you and your passengers comfortable. Thus, it’s essential to make a careful evaluation of the size of your van and determine the right sized diesel heater that offers the perfect balance between fuel efficiency, heating capacity and cost-effectiveness.

The consideration of cost should extend beyond the initial purchase price when selecting a diesel heater. Maintenance expenses, as well as the availability and accessibility of spare components, must also be weighed in the decision-making process. An optimally efficient diesel heater should boast not only top-notch performance, but also minimal upkeep costs, keeping monetary outlays low and minimizing disruption to use. Moreover, the presence of readily accessible spare parts will ensure seamless operation, without the burden of prolonged search or costly replacement endeavors.

In the end, when selecting a diesel heating system for your van, ponder on the critical aspect of fuel proficiency and its monetary implications. Scrutinize the heating efficiency rating and fuel consumption rate, and don’t overlook the cost of upkeep. Opt for a diesel heater that boasts a high heating efficiency, minimal fuel expenditure, and a cost-effective maintenance plan.

Safety Features

When it comes to securing a diesel heating system for your vehicle, the significance of fuel efficiency and its monetary repercussions cannot be overstated. In your quest to find the perfect heating solution, meticulously analyze the heating efficiency rating and fuel consumption rate, as these are vital indicators of the system’s fuel proficiency. And while considering the costs, don’t overlook the maintenance expenses. Make a wise choice and aim for quality diesel heaters that boasts an impressive heating efficiency, minimal fuel consumption, and an economical maintenance program, ensuring that you keep both your wallet and the environment protected.

  • Overheat Prevention: A safeguard equipped in the heater to automatically switch off when temperatures rise to hazardous levels, averting the risk of a fire and safeguarding the heater from harm.
  • Flame Failure Defense: A mechanism that ensures the heater will shut down instantly in the event of a flame being extinguished, forestalling dangerous gas buildup and maintaining the heater’s operational safety.
  • Oxygen Depletion Detection: A sensor that vigilantly tracks the oxygen levels in the ambiance, switching off the heater when oxygen levels fall below safe limits. A crucial aspect in enclosed spaces such as vans, where oxygen levels can deplete swiftly.
  • Fire Suppression: A device that curtails the spread of flames in case of an explosion, preventing hot gasses or sparks from escaping the heater and igniting a fire.
  • Automated Turn-Off: A feature that guarantees the heater’s automatic shut-off in the event of being knocked over or tipped, avoiding accidents and protecting the heater from harm.
  • It is strongly advised that you install a carbon monoxide detector to protect the inhabitants of the van from carbon monoxide poisoning while sleeping. A diesel heater that is properly installed will not produce any fumes inside the van, making it safe to run continuously throughout the night without the risk of carbon monoxide emissions.

Furthermore, the longevity and fortitude of your diesel heater is not just reliant on its safety features, but also its sturdy construction. Opting for a heater that is built to last not only reduces the likelihood of accidents but also guarantees longevity and durability, a considerable advantage in the long run.

Heating Capacity

When searching for the ultimate diesel heating solution for your van, it’s crucial to contemplate the heating capacity. This aspect, typically quantified in BTUs per hour, determines the heater’s heating prowess. The higher the BTU rating, the greater the heating capacity, and thus, the more warmth it can produce.

In order to obtain a diesel heating system that aligns with your unique needs, you must choose the appropriate size heater and heating efficiency. A petite van may not necessitate a robust heating source, while a larger vehicle may require a diesel heater with an augmented heating capacity to banish the chill.

The pace of warmth dissemination must be weighed with equal importance as the heating potency of the diesel heater. Some diesel heaters may take an excessive amount of time to warm up your van, while others may do so swiftly. Select a diesel heater that can ignite the warmth in your van with velocity, depending on your specific needs.

Finally, you must consider the distribution of warmth throughout your van. Some diesel heaters may concentrate the heat in one specific area, while others may distribute it evenly. Opt for a diesel heater that distributes heat uniformly throughout your van to guarantee the most gratifying heating experience.

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