### Diesel Heater

The diesel heater is a leading choice for campervan and RV conversions, delivering reliable warmth, efficient operation, and flexibility, especially for off-grid adventures[1][2][3].

What Makes Diesel Heaters Ideal for Campervan Conversions

• Runs off existing fuel tank: Most diesel heaters can connect to your van’s built-in diesel supply, simplifying fuel management[1][2].
• Safe combustion: All combustion air is drawn from the exterior, with exhaust safely expelled outdoors when installed correctly[2].
• Compact and efficient: Heats campervans quickly, with minimal fuel use—typically 0.1 to 0.3 liters per hour[3].
• Works in cold climates: Reliable performance even in sub-zero conditions, supporting full-time living and winter trips[3].

Key Features and Benefits

• Automatic shut-off: Safety features such as overheat protection and problem-sensing shutoffs are standard[1].
• Thermostat and remote control: Many models include remote or Bluetooth temperature controls for convenience[1][2].
• Noise-reduction options: Mufflers can be installed to keep operation quiet, crucial for night-time or stealth camping[1].
• Multiple heater types: Options include simple air heaters, combi air-and-water heaters, and advanced hydronic systems with altitude adjustment for mountainous areas[1].

What to Look for When Buying

• Compatible voltage: Campervan models typically require 12V heaters to work with standard leisure batteries[2][4].
• Size and output: Choose a heater matched to your van’s volume—smaller vans need less BTU (British Thermal Unit) output.
• Fuel tank integration: Prefer heaters that hook into the main van tank, unless you want a separate auxiliary fuel supply[1].
• Safety certifications: Check for automotive/RV ratings and include a carbon monoxide detector for added protection[3].
• Control options: Look for programmable thermostats or mobile app integration if remote control matters to you.

Common Mistakes to Avoid

• Poor ventilation: Always route exhaust outside; improper setup risks carbon monoxide build-up[3].
• Undersized heater: A small unit may struggle in winter; choose based on climate and van size[3].
• Ignoring noise: Cheap models can be loud—install a muffler and choose reputable brands for quieter operation[1].
• DIY installation errors: Improper wiring or ducting causes leaks and malfunctions; seek professional help if unsure[4].

Best Use Cases

• Weekend warriors: Air heaters with basic features suffice for sporadic use, keeping costs and complexity down[1].
• Full-time living: Consider combi or hydronic models with water heating and advanced altitude options for year-round comfort[1].
• Winter adventurers: High-output, fuel-efficient heaters with robust climate control deliver reliability in extreme conditions[3].

Budget Considerations and Value Analysis

• Upfront cost: Expect $800–$1,500 for quality units (plus installation), but budget options may be available for DIY setups[3].
• Value: Diesel heaters offer long-term savings on fuel and extend your camping season, making them a sound investment, especially for full-timers[2][3].
• Installation cost: DIY saves money but carries safety risks. Professional installation guarantees correct setup for peace of mind[4].

In summary: Choose a diesel heater for safe, efficient, and year-round warmth, tailoring type and features to your van size and travel style. Prioritize safety, fuel integration, noise level, and proper installation to maximize comfort and heater lifespan.

Diesel heaters are a top choice for campervans and RVs due to their efficiency, performance in cold climates, and compatibility with vehicle fuel systems[2][3][4]. Comparable alternatives in the same category include:

1. Propane Forced Air Heater by Suburban
- Pros: Widely available fuel, straightforward installation, quiet operation, reliable in moderate climates[4].
- Cons: Less efficient at high altitude, bulkier fuel tanks, limited in extreme cold, combustion byproducts require careful ventilation[4].
- Price: $600–$1,200 (unit only; installation extra)[4].
- Best for: Weekend campers and those traveling in less extreme climates where propane refills are easy to access.

2. Hydronic Heater by Eberspaecher or AquaHot
- Pros: Provides both hot air and hot water, can be used for heated floors, highest heat output, efficient at high altitude[1].
- Cons: Expensive system, complex installation, large footprint required, overkill for small vans.
- Price: $4,000–$6,000[1].
- Best for: Full-time travelers or luxury RV users needing integrated hot water and floor heating.

3. Electric Heater (Any reputable brand)
- Pros: Simple install, safe (no combustion), zero emissions inside, silent operation[3].
- Cons: Requires substantial battery or shore power, high energy consumption unsuitable for off-grid or solar setups, limited effectiveness in poorly insulated vans.
- Price: $50–$300 (unit only)[3].
- Best for: Occasional use with access to grid power or robust solar arrays; not ideal for winter or sustained off-grid heating.

4. Wood Stove by Cubic Mini
- Pros: Off-grid, produces dry heat, ambiance, can use locally sourced wood.
- Cons: Requires chimney install, space-consuming, not allowed in all campgrounds, manual operation, more safety risk.
- Price: $300–$1,000 (plus install)[2].
- Best for: Static camper setups, those wanting a sustainable, fuel-independent solution in appropriate climates.

Diesel Heater Comparison

• Pros: Highly efficient, runs on vehicle's existing tank, reliable in extreme cold and at altitude, low fuel usage (0.1–0.3 L/hr), compact size[2][3][4].
• Cons: Initial install complexity, potential exhaust fumes (must vent properly), noise (though modern units quieter)[2][3].
• Price: $800–$1,500 (unit only; installation typically $500+)[2][3].
• Best for: Long-term van lifers needing reliable winter heat, extensive travel in remote or high-altitude areas, those wanting to minimize refueling stops.

Performance for Van Life Use Cases

• Diesel heaters have superior efficiency and cold-weather reliability, especially for full-time van living in harsh climates[2][4].
• Propane heaters suit moderate climates and shorter trips but may falter in extreme conditions or at altitude[4].
• Hydronic systems maximize comfort (air, water, and floors) at high cost, ideal for luxury builds[1].
• Electric works only for very short or grid-connected stays[3]; wood stoves can provide ambiance but come with space and safety tradeoffs[2].

Choose a diesel heater when:
- You want consistent, robust heating in any climate.
- Your travel is extensive or remote, making fuel availability and efficiency paramount.
- You need a solution optimized for energy and cost over months of use[2][3][4].

Tools Required
- Electric drill and drill bits (including hole saw and metal bits)
- Screwdriver set
- Wrenches/spanners
- Measuring tape and marker
- Stanley knife or hose cutter
- Pliers
- Crimping tool (for wiring)
- Sealant (high temperature recommended)
- Safety glasses and gloves[1][3]

Prerequisites
- Choose and clear a flat, accessible location for the heater (usually under a seat or in a storage compartment)[1].
- Disconnect the van’s battery before electrical work.
- Check for enough space underneath the van for the exhaust and air intake.
- Gather all parts (heater kit, mounting plate, wiring loom, controller, ducting, fuel line, inline filter, exhaust pipe, and clamps)[2][3].
- Obtain a carbon monoxide alarm for safety[3].

Step-by-Step Instructions
1. Install Fuel Tank or Tap Into Main Tank:
- Mount the supplied tank or connect to the van’s diesel tank if supported.
- Drill an 8 mm hole for the tank pickup if required. Fit the connector, seal with the O-ring, and secure[1].

1. Mark and Cut Floor Holes:
   - Mark where air intake, exhaust, and fuel line will pass through the floor.
   - Use the drill and hole saw for precise cuts; deburr and seal cut edges to prevent rust and fumes[1][2].

2. Mount the Heater:
   - Attach the mounting plate to the van floor or to an insulating box.
   - Seal around openings with high-temperature sealant.
   - Feed fuel, intake, and exhaust pipes through their respective holes[1][2].

3. Install Air Intake & Exhaust:
   - Fit the intake pipe with its filter away from exhaust and road debris.
   - Route the exhaust pipe downwards and outwards—never forward, and avoid proximity to doors or windows. Attach with clamps and seal.
   - Secure pipes underneath to avoid vibration[2].

4. Run Fuel Line:
   - Cut rubber and plastic fuel lines to length, keeping them as short and direct as possible. Use all provided clips and a fuel filter[3].
   - Connect tank to pump, then pump to heater.

5. Mount and Wire Fuel Pump:
   - Install at a slight angle (~30°) for quieter operation.
   - Connect wiring using the supplied loom; route safely away from heat and moving parts[2].

6. Connect Power and Controller:
   - Wire the heater’s positive and negative leads to your (fused) 12V supply.
   - Mount the controller in an accessible location, plug in any sensors or remotes[2].

7. Prime the Fuel System:
   - Using the controller, run the pump to fill the line until diesel reaches the heater—follow your model’s manual for specific steps[2].

8. Test and Inspect:
   - Reconnect the battery.
   - Run the heater for 20–30 minutes, checking for leaks, noise, and proper heating[1][2].

Common Mistakes
- Placing exhaust near windows or air intakes—risk of fumes inside.
- Poorly sealed floor holes, leading to gas or water ingress.
- Running electrical wires without a fuse.
- Failing to prime the system (causes “no fuel” errors or fails to ignite)[2][3].

Pro Tips
- Use high-temp automotive sealant to thoroughly seal around holes and mounting plate.
- Short, straight fuel lines work best for reliable flow.
- Install a carbon monoxide alarm inside the van as a safety necessity[3].
- Periodically inspect exhaust and connections for leaks.

Time Estimate
- 4–8 hours: Experienced DIYers may complete an install in 4–5 hours; beginners should allow a full day for careful, safe work[1][2].