Best Diesel Heater For Boat

Best Diesel Heater For Boat

The cold winter months can be a real challenge for boat owners. The freezing temperatures can make using your boat almost impossible, so a diesel heater is a great way to keep your boat warm and cozy. But, with so many diesel heaters on the market, it can be hard to know which one is right for you. This guide will help you find the best diesel heater for your boat so you can keep it running all winter long.

How to Find Best Diesel Heater for Boat

The best diesel heaters for boats depend on the size and type of boat, as well as its intended use. A few of the top-rated diesel heaters for boats are Webasto Air Top 2000 STC, Eberspächer D3WZ, and Wallas 30DT. These heaters are reliable, efficient, and provide a comfortable environment for both the boat and its occupants. They are also easy to install and maintain, making them ideal for a variety of boat owners.

  1. Webasto Air Top 2000 STC Diesel Heater
  2. Planar Marine Diesel Heater
  3. Eberspacher Airtronic D2 Diesel Heater
  4. Eberspacher Hydronic D5 Diesel Heater
  5. Eberspacher Hydronic M10 Diesel Heater

In addition to the above diesel heaters, there are a variety of other options available on the market. Many of these heaters are designed specifically for marine applications, and come with features such as water-resistant housings, corrosion-resistant components, and specially designed fuel tanks. Some are even equipped with temperature sensors, enabling them to maintain a comfortable temperature even when the boat is in motion.

How to Find Best Diesel Heater for Boat

What to Consider When Buying a Diesel Heater

It is important to determine the size of the space you wish to heat and the amount of fuel that will be needed to heat it. The type of fuel you choose should match the type of heater you are looking for. There are many different types of diesel fuel available, so it is important to ensure that you are selecting the correct one for your heating needs. You should make sure that the heater is sized correctly for your space. It is important to consider the cost of the heater, as well as any additional parts or accessories that may be necessary for installation.

When it comes to buying the best diesel heater for your boat, there are a few key factors to consider. Here’s what you should look for:

  1. Size:  The size of your diesel heater will depend on the size of your boat. Make sure you measure the area where you plan to install your heater before you buy so you can get the right size for your boat.
  2. Fuel Efficiency: They can be very fuel efficient, but it’s important to pay attention to the fuel efficiency rating of the heater you’re considering. Look for a heater that has an efficient rating so you can save money on fuel costs.
  3. Safety Features: Diesel heaters are generally safe, but some models may have extra safety features that can make them even safer. Look for a heater that has an automatic shut-off or low-oxygen sensor so you can rest assured that your heater is safe to use.

Types of Diesel Heaters

When it comes to choosing the best diesel heater for your boat, you’ll need to decide which type is right for you. Here are the types of diesel heaters available:

  1. Forced Air Heaters:
    These are the most common type of diesel heaters and are usually the most affordable. They use a fan to circulate warm air throughout the boat, making them ideal for larger boats.
  2. Direct Vent Heaters:
    These are more efficient than forced air heaters, but they are more expensive. They use a direct vent to draw air into the heater, which means they are better suited for smaller boats.
  3. Non-Vent Heaters:
    They are the most efficient, but they are also the most expensive. They use a combustion chamber to draw air, which makes them ideal for boats with limited space.

There are several types of diesel heaters available, including forced air heaters, radiant heaters, and combustion heaters. Forced air heaters use a fan to blow heated air into a space, while radiant heaters use infrared radiation to heat the area directly. Combustion heaters are the most efficient type of diesel heater, as they directly burn the diesel fuel to generate heat. All diesel heaters require a venting system to safely vent the exhaust outside.

Types of Diesel Heaters

Installation Considerations

Once you’ve chosen the best diesel heater for your boat, it’s time to install it. Here are some things to consider when installing your diesel heater:


Make sure you have adequate ventilation for your diesel heater, as this will ensure it operates safely and efficiently. Take the time to measure the area where you plan to install your heater and ensure that it has enough space for adequate ventilation.

Fuel Line

If you’re installing a direct vent heater, you’ll need to install a fuel line in order to operate it. Make sure you use the right type of fuel line for your heater and have it professionally installed to ensure it is safe.

Electrical Connections

If you’re installing a diesel heater that requires electricity, you’ll need to make sure the electrical connections are properly installed. It’s best to have a professional electrician install the electrical connections to ensure they meet local codes and are safe.

Maintenance Tips

Once your diesel heater is installed, it’s important to keep it well maintained. Here are some tips for keeping your diesel heater in tip-top shape:

Regular Cleaning

It’s important to clean your diesel heater regularly. Make sure you clean the air filters and check the fuel lines for leaks.

Regular Servicing

Have your diesel heater serviced regularly to ensure it’s operating correctly. A professional technician can inspect your heater and make any necessary repairs or adjustments.

Regular Refueling

Make sure you refuel your diesel heater on a regular basis to ensure it’s always running efficiently. This will also help you reduce fuel costs.


A diesel heater is a great way to keep your boat warm and comfortable during the colder months. But, it’s important to make sure you choose the best diesel heater for your boat. Consider the size, fuel efficiency, and safety features of the heater you’re considering, and make sure you have it professionally installed. Most importantly, make sure you keep your diesel heater well maintained to ensure it’s always running efficiently. With these tips, you can be sure to find the best diesel heater for your boat.