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7 Best 12 Volt Heater For Rv 2025 in the United States

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Our Top Picks

#1

Winner

VEVOR Diesel Air Heater, 12 V 5KW All in One Bunk Parking Heater, with Remote Control, LCD Thermostat Monitor, Silencer and Large Air Outlet for RV Trucks Bus and Trailer

Rating
10.0
Chosen by1,184
Power Output (Wattage
Size and Portability
Safety Features

Most important from
1941 reviews

Power Output (Wattage
Blows a great amount of heat for its size, easily enough to heat a standard garage.
Size and Portability
Runs vibration-free enough to be set on 2x4 pieces without moving.
Safety Features
The heater won't shut down when it reaches setpoint, which is a significant issue for small spaces.
Energy Efficiency
Despite using diesel, it doesn’t consume a lot of fuel, which has helped keep costs down.
Noise Level
The heater runs smoothly and is relatively quiet compared to other space heaters, so it doesn’t create a distracting noise.
Ease of Use
The remote control is a nice touch, allowing easy temperature adjustments without having to get up.

The VEVOR Diesel Air Heater is a 12-volt heater designed specifically for RVs, trucks, and other diesel vehicles. With a power output of 5KW, it quickly warms up spaces, reaching temperatures within just 10 minutes, which is ideal for those cold winter trips. Its compact size and portable design make it suitable for various applications, whether in a vehicle or at home. The heater features an LCD thermostat and remote control, allowing for easy adjustments of the temperature from a distance, enhancing user convenience.

One of its standout features is its low energy consumption, consuming only about one gallon of diesel to operate throughout the night. This efficiency makes it a great choice for those who want to stay warm without worrying about excessive fuel use. Additionally, the low noise level due to its effective fuel pump design contributes to a comfortable environment, whether you're on the road or parked.

There are some drawbacks to consider. The unit's reliance on diesel fuel may not appeal to everyone, especially if you're looking for a more versatile heating option that works with multiple fuel types. In terms of safety features, while it does come equipped with essential controls and a combustion chamber designed for efficiency, prospective buyers should ensure they understand how to operate it safely. Additionally, the heater weighs 18 pounds, which may be a consideration for those with limited space or carrying capacity.

Rating
10.0
Chosen by1,184
Power Output (Wattage
Size and Portability
Safety Features

Most important from
1941 reviews

Power Output (Wattage
Blows a great amount of heat for its size, easily enough to heat a standard garage.
Size and Portability
Runs vibration-free enough to be set on 2x4 pieces without moving.
Safety Features
The heater won't shut down when it reaches setpoint, which is a significant issue for small spaces.
Energy Efficiency
Despite using diesel, it doesn’t consume a lot of fuel, which has helped keep costs down.
Noise Level
The heater runs smoothly and is relatively quiet compared to other space heaters, so it doesn’t create a distracting noise.
Ease of Use
The remote control is a nice touch, allowing easy temperature adjustments without having to get up.
#2

VEVOR 8KW Diesel Heater, Diesel Heater All in One with Remote Control and LCD Screen, Parking Bunk Heater, Fast Heating Low Noise, Portable Diesel Heater for Truck Van RV Trailer Camper

Rating
9.7
Safety Features
Energy Efficiency
Noise Level

Most important from
1416 reviews

Safety Features
There are concerns about the safety and quality control, particularly with the fuel line connections, which could pose a significant fire hazard if not properly checked.
Energy Efficiency
This heater is impressively efficient, heating large spaces quickly and effectively, even in very cold conditions.
Noise Level
The control system can be confusing, with unclear temperature settings and the fuel pump's constant clicking being quite disruptive.
Ease of Use
Installation is straightforward and the heater is easy to use, making it a practical choice for various setups like garages, trailers, and vans.

The VEVOR 8KW Diesel Heater is a powerful and portable heating solution ideal for RVs, trucks, vans, trailers, and even indoor spaces. With a substantial power output of 8KW, it can effectively heat an area of 215-269 square feet, making it suitable for larger spaces. One of its significant advantages is the installation-free design, which simplifies setup, especially for outdoor adventures like camping.

The heater also boasts low energy consumption, using less than 1 gallon of fuel per night, and features a large 5-liter fuel tank that provides continuous heat for up to 8 hours, enhancing its energy efficiency. Additionally, the advanced dual control system with a 32 ft remote and an LCD screen allows for convenient operation, including preheating and temperature adjustments ranging from 46°F to 96.8°F.

The heater is designed to operate smoothly in extreme temperatures and high altitudes, which is a great benefit for various environments. Safety is another strong aspect, with features like constant temperature control, overheating protection, and voice broadcasting. On the downside, the heater weighs 22.4 pounds, which may not be as portable as some users might prefer. The noise level is claimed to be low, but it's important to note that user experiences with noise can vary.

Rating
9.7
Safety Features
Energy Efficiency
Noise Level

Most important from
1416 reviews

Safety Features
There are concerns about the safety and quality control, particularly with the fuel line connections, which could pose a significant fire hazard if not properly checked.
Energy Efficiency
This heater is impressively efficient, heating large spaces quickly and effectively, even in very cold conditions.
Noise Level
The control system can be confusing, with unclear temperature settings and the fuel pump's constant clicking being quite disruptive.
Ease of Use
Installation is straightforward and the heater is easy to use, making it a practical choice for various setups like garages, trailers, and vans.
#3

Diesel Heater 12V, 8KW Diesel Air Heater with 5L/1.3Gal Fuel Tank, All-in-One Portable Diesel Parking Heater with Remote Control & LCD Display, Fast Heating for Car RV Boat Truck Trailer Tent Garage

Rating
8.8
Power Output (Wattage)
Energy Efficiency
Ease of Use

Most important from
82 reviews

Power Output (Wattage)
Powerful enough to keep a 1.5 car garage over 60° even when temperatures drop below zero.
Energy Efficiency
Consumes about 5 liters of diesel in 26 hours, providing efficient heating.
Ease of Use
The heater is durable and easy to install, making the area comfortable quickly.

This 12V Diesel Heater from BreAro is a solid choice for RV enthusiasts or anyone needing portable heat for their vehicles. With a powerful output of 8 KW, it can quickly warm spaces up to 269 square feet within just 10 minutes, making it ideal for cold nights. The inclusion of an intelligent LCD display and remote control adds convenience, allowing users to adjust temperatures between 46.4 °F and 96.8 °F from a distance of up to 32 feet, which is a great feature for those who prefer comfort without the hassle of manual adjustments.

Energy efficiency is another strong point. The heater consumes only about 1 gallon of fuel per night, with low emissions thanks to its precision fuel pump and ceramic spark plug. This means you can enjoy continuous heating for up to 16 hours without worrying much about fuel waste. The compact and portable design also contributes positively, making installation straightforward and allowing it to fit in various settings, whether in a car, truck, or even a garage.

There are a few considerations to keep in mind. While the heater is designed for safety with features such as overheating protection and a sensor that prevents dry running, it still relies on diesel fuel, which may not be as readily available for some users compared to propane or electric alternatives. Additionally, with its weight of 20.5 pounds, it may be a bit cumbersome to lift for some users, despite the built-in handle. This heater could be a great investment for those who need reliable heat in their RV or similar setups, but ensuring it fits personal needs and preferences is essential.

Rating
8.8
Power Output (Wattage)
Energy Efficiency
Ease of Use

Most important from
82 reviews

Power Output (Wattage)
Powerful enough to keep a 1.5 car garage over 60° even when temperatures drop below zero.
Energy Efficiency
Consumes about 5 liters of diesel in 26 hours, providing efficient heating.
Ease of Use
The heater is durable and easy to install, making the area comfortable quickly.

Buying Guide for the Best 12 Volt Heater For Rv

Choosing the right 12-volt heater for your RV is crucial for ensuring comfort during your travels, especially in colder climates. A good heater can make a significant difference in maintaining a cozy and warm environment inside your RV. When selecting a heater, it's important to consider several key specifications to ensure you get the best fit for your needs. Here are the main specs you should focus on and how to navigate them.
Power Output (Wattage)Power output, measured in watts, indicates how much heat the heater can produce. This is important because it determines how quickly and effectively the heater can warm up your RV. Lower wattage heaters (100-200 watts) are suitable for small spaces or mild weather, while higher wattage heaters (300-500 watts or more) are better for larger spaces or colder conditions. Choose a heater with a power output that matches the size of your RV and the typical weather conditions you expect to encounter.
Size and PortabilityThe size and portability of the heater are important for convenience and space management in your RV. Smaller, more compact heaters are easier to store and move around, making them ideal for limited space. Larger heaters may provide more heat but can be cumbersome. Consider the available space in your RV and how often you might need to move the heater when making your choice.
Safety FeaturesSafety features are crucial when using a heater in an enclosed space like an RV. Look for heaters with features such as overheat protection, tip-over switch, and automatic shut-off. These features help prevent accidents and ensure safe operation. If you have pets or children, these safety features become even more important to prevent any mishaps.
Energy EfficiencyEnergy efficiency refers to how effectively the heater converts electrical energy into heat. An energy-efficient heater will use less power to produce the same amount of heat, which is important for conserving your RV's battery life. Look for heaters with energy-saving modes or those that are specifically designed to be energy efficient. This will help you maintain warmth without draining your power supply quickly.
Noise LevelThe noise level of the heater can affect your comfort, especially if you plan to use it while sleeping. Some heaters operate quietly, while others can be quite noisy. If you are sensitive to noise or plan to use the heater in a sleeping area, look for models that are specifically designed to operate quietly. Checking user reviews can also give you an idea of the noise level to expect.
Ease of UseEase of use includes how simple it is to operate the heater, including controls, settings, and maintenance. Heaters with intuitive controls, clear displays, and easy-to-understand settings are more user-friendly. Additionally, consider how easy it is to clean and maintain the heater. A heater that is easy to use and maintain will provide a better overall experience.

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