Finding the right 12V heater for a caravan means balancing power, fuel type, noise, and installation complexity. Below is a compact comparison of five relevant heaters selected for caravans, campervans, and small RVs.
| Product | Type | Power / Notes |
|---|---|---|
| VEVOR Diesel Air Heater All In One | Diesel Air Heater | 8 kW, 12V, single outlet |
| VEVOR Diesel Air Heater 5KW | Diesel Air Heater | 5 kW, 12V/24V, 10L tank |
| VEVOR 8KW Diesel Heater Bluetooth | Diesel Air Heater | 8 kW, 12/24V, CO alarm, app control |
| Triclicks Diesel Air Heater 5-8KW | Diesel Air Heater | 5–8 kW range, 12V, LCD & remote |
| Bestol 12V 120W PTC Car Fan Heater | Electric Fan Heater | 12V DC, 120W, compact under-dash |
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VEVOR Diesel Air Heater All In One 8KW
This 8 kW diesel air heater is an integrated unit designed for vehicles and small living spaces. It runs on 12V and is marketed for fast heating, with a stated ability to warm a vehicle within about ten minutes.
Key listed features include operation across a wide ambient range (-40°C to +50°C), an oil pump with low vibration for quieter operation, and fuel consumption of 0.1–0.24 L/h. The product claims functionality up to high altitude (5500 meters) and suitability for pre-heating engines and defrosting windows.
For caravan use, this model offers high heat output suitable for larger trailers or cold climates. Installation considerations include fuel tank placement, exhaust routing through the caravan wall, and 12V power capacity for sustained operation.
VEVOR Diesel Air Heater 5KW With 10L Tank
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This 5 kW diesel heater supports both 12V and 24V systems and is specified for approximate coverage of 15–20 m² (161–215 ft²). It includes a 10L fuel tank and a long-range remote for preheating from outside the vehicle.
Important features listed: sandblasted aluminum heat exchanger for rapid heating, low-noise precision fuel pump, and adjustable temperature from 8°C–36°C (46°F–96.8°F). The fuel consumption range is stated at 0.16–0.52 L/h and the tank capacity provides extended runtime.
As a caravan option, the 5 kW model is often a balanced choice for medium-sized spaces, providing steady ambient heat while minimizing installation footprint. Consider battery capacity and ventilation when integrating into living areas.
VEVOR 8KW Diesel Heater With Bluetooth App Control
This higher-output diesel heater lists 8 kW power and compatibility with DC 12–24V supplies. It includes upgraded safety features such as a built-in CO alarm, fuel level indicator, and overheat protection. The unit supports Bluetooth APP control alongside remote and display screen operation.
Manufacturer notes highlight cast aluminum construction, ceramic igniter, and fuel consumption of ~0.18–0.35 L/h. The unit claims ≥90% combustion efficiency and is described as suitable for vehicles, garages, cabins, and similar settings.
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For caravan use, the CO alarm and safety features are relevant where heaters operate near living spaces. Proper exhaust routing and regular maintenance are essential to ensure safe in-vehicle operation.
Triclicks Diesel Air Heater 5KW–8KW With LCD
The Triclicks diesel air heater is presented in power options between 5 kW and 8 kW, aimed at vehicles, campervans, and indoor applications. It includes an LCD monitor, remote control, and a silencer to reduce operating noise.
Features listed include low emissions, low fuel consumption, adjustable fuel/electricity/temperature settings, and compatibility with multiple vehicle types. The product guide notes that smaller interior spaces warm faster and suggests multiple units for larger areas.
This unit suits caravans where user controls and quiet operation are priorities. Attention to installation guidelines—fuel feed, exhaust, and placement relative to sleeping areas—affects overall performance and safety.
Bestol 12V 120W PTC Electric Car Fan Heater
This 12V 120W PTC fan heater is an electric under-dash style heating unit intended for compact spaces and short-term spot heating or defrosting. It includes mounting holes, an insulated surface, and high-temperature rated wiring.
Key listed attributes: compact footprint, multiple power variants available (70W–300W), easy installation, and emphasis on durability. It draws only vehicle electrical power and does not require fuel plumbing or exhaust routing.
Electric 12V heaters are typically best for supplemental heating, defrosting, or when fuel-based systems are impractical. Assess the caravan’s battery capacity or inverter availability for sustained electric heating—continuous use can drain batteries quickly without sufficient charging.
Buying Guide: Choosing A 12V Heater For A Caravan
Selecting the appropriate heater for a caravan involves weighing space size, power source, safety, and installation complexity. The sections below outline key considerations.
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Heat Output And Space Size
- kW Rating: Diesel heaters commonly range 2–8 kW. Larger caravans or very cold climates typically need higher kW outputs. A 5 kW unit often suits medium-sized caravans; 8 kW suits larger or poorly insulated spaces.
- Coverage Area: Manufacturers often provide m² or ft² coverage estimates—use these as a baseline and add margin for drafts or poor insulation.
Fuel Type And Runtime
- Diesel Heaters: Require fuel tank, fuel line, combustion chamber, and exhaust. They provide high heat output and long runtime with efficient fuel use, but need safe exhaust routing and periodic maintenance.
- Electric 12V Heaters: Simple to install and vent-free but limited by battery capacity and lower heat output. Best for short runs, spot heating, or when shore power is available.
Power Supply And Battery Capacity
- Confirm the caravan’s 12V system current capacity. Diesel heaters draw power for ignition, pumps, and fans—ensure the battery/alternator or auxiliary battery can sustain startup currents and runtime.
- For electric heaters, calculate continuous amp draw (e.g., 120W at 12V ≈ 10 A). Long use requires adequate charging (solar, alternator, shore power) or large battery banks.
Safety Features
- CO Monitoring: For combustion heaters used inside living spaces, consider units with CO alarms or ensure a separate CO detector is installed.
- Overheat And Leak Protections: Look for overheat protection, fuel leak prevention, and clear exhaust isolation to prevent fumes entering the cabin.
- Follow manufacturer guidance on ventilation and mandatory clearance distances during installation.
Noise And Comfort
- Check listed noise characteristics and whether a silencer is included. Low pump vibration and insulated housings reduce audible noise while sleeping.
- Consider airflow placement and ducting to distribute heat evenly and avoid hot/cold spots.
Controls And Usability
- Remote controls, LCD panels, timers, and app connectivity enable preheating and easier temperature management.
- Programmed temperature control improves efficiency and comfort versus simple on/off models.
Installation Complexity And Serviceability
- Diesel systems require cutting exterior panels for exhaust and intake, mounting tanks, and routing fuel lines. Professional installation is commonly recommended for safety and code compliance.
- Electric units are generally easier to mount and wire but verify connector types, fuse sizing, and secure mounting points.
- Consider spare parts availability (fuel pumps, igniters, control modules) and whether the manufacturer provides clear service documentation.
Comparison Perspectives
- Performance vs. Complexity: Diesel heaters deliver strongest heating per fuel volume but require more complex installs and safety adherence.
- Cost of Operation: Diesel heaters typically consume small amounts of diesel per hour and can be more economical for extended use; electric heaters depend on electricity source and battery draw.
- Safety vs. Convenience: Built-in CO alarms and app controls increase convenience and safety but verify they meet recognized standards and are installed per guidance.
Practical Checklist Before Purchase
- Measure caravan interior volume and insulation quality.
- Decide on diesel vs. electric based on run duration and fuel availability.
- Verify 12V wiring capability, alternator output, and battery reserve.
- Confirm exhaust routing options and ventilation clearances.
- Review product manuals for recommended installation kits and accessories.