Webasto Heater Installation
German-engineered gasoline air heating for your van — professionally installed by OZK Customs. Stay warm in any climate without draining your battery bank or carrying a separate fuel source.
Why Webasto?
Webasto isn't a van life brand that popped up last year. They've been engineering vehicle heating and cooling systems since 1901 — over a century of thermal management for the automotive industry. Their heaters come factory-installed in vehicles from BMW, Mercedes-Benz, Volkswagen, Porsche, and dozens of other manufacturers worldwide. When an automaker needs a heater that performs flawlessly for hundreds of thousands of miles, they call Webasto. That's the pedigree behind the unit we install in your van.
Webasto's OEM partnerships aren't marketing fluff — they're the result of meeting the most demanding quality and reliability standards in the automotive industry. Every Webasto heater is designed to the same tolerances as factory-installed equipment, tested under the same conditions, and manufactured to the same specifications. When you install a Webasto in your van, you're getting the same engineering that goes into a premium German sedan — not a rebranded Chinese space heater marketed to vanlifers on Instagram.
For gasoline-powered vans — including the Ford Transit with the 3.5L EcoBoost — Webasto offers something most van heater brands don't: a purpose-built gasoline air heater. Most aftermarket heaters on the market are diesel units, which means gasoline van owners either need a separate diesel fuel tank or they're out of luck. The Webasto Air Top 2000 STC runs directly off your van's existing gasoline fuel system, eliminating the need for a second fuel source entirely. One fuel, one tank, zero compromise.
Webasto Air Top 2000 STC Gasoline
The Webasto Air Top 2000 STC is a forced-air gasoline heater that delivers up to 6,800 BTU of heat output — enough to keep a Transit cargo area warm in sub-freezing temperatures. It taps directly into your van's existing gasoline fuel system, drawing a fraction of a gallon per hour at full output. At low settings, fuel consumption drops to nearly negligible levels, meaning you can run the heater overnight without making a meaningful dent in your fuel tank.
The "STC" designation stands for Webasto's Smartemp Control — a built-in thermostat and programmable timer that lets you set target temperatures and schedule heat cycles. Wake up to a warm van without running the heater all night. Set it to kick on thirty minutes before your alarm. Program it to maintain a minimum temperature while you're away from the vehicle. The Smartemp controller gives you precision climate management, not just an on/off switch.
Electrically, the Air Top 2000 STC is remarkably efficient. It draws between 14 and 29 watts during operation — roughly the same as a small LED light panel. Compare that to a ceramic space heater pulling 1,500 watts from your inverter and obliterating your battery bank in hours. The Webasto runs directly on 12V DC, so there's no inverter loss, no heavy electrical draw, and no compromise to the rest of your van's power systems. Your batteries stay charged for the equipment that actually needs them.
6,800 BTU Output
Enough heat to keep a full-size Transit interior warm in sub-zero conditions. Variable output for fine-tuned comfort in milder weather.
Gasoline Fuel System
Taps directly into your van's existing fuel tank. No separate diesel tank, no extra plumbing, no second fuel to manage on the road.
Smartemp Control
Built-in thermostat and programmable timer. Set target temperatures, schedule heat cycles, and wake up warm without running the heater all night.
14–29W Power Draw
Runs on 12V DC with minimal electrical consumption. No inverter required, no battery drain — hours of heat from watts, not kilowatts.
Whisper-Quiet Operation
Engineered to OEM noise standards. Quiet enough to sleep through at any output level — no buzzing, no rattling, no diesel clatter.
Compact Form Factor
Mounts under the vehicle or in the cargo area without consuming usable living space. Small enough to integrate into any van layout.
Gasoline vs. Diesel Heaters
If you drive a diesel Sprinter or a diesel Transit, a diesel heater makes perfect sense — it runs off the same fuel your engine uses, and brands like Espar and Webasto both offer excellent diesel units. But if your van runs on gasoline — and the majority of Ford Transits do — a diesel heater creates a problem that most van builders gloss over: you now need to carry and manage two separate fuel types in the same vehicle.
A separate diesel tank takes up space, adds weight, and introduces a second fuel system that needs its own plumbing, its own fill point, and its own maintenance schedule. You're pulling into gas stations to fill your van and then walking to the diesel pump to fill your heater. You're tracking two fuel levels instead of one. And if you ever accidentally put the wrong fuel in the wrong system, you've got a serious and expensive problem on your hands.
The Webasto Air Top 2000 STC Gasoline eliminates this entirely. One fuel system. One tank. One fill-up. The heater taps into the same gas your engine runs on, with a dedicated fuel line and pump that draws from your existing tank. It's cleaner, simpler, lighter, and eliminates an entire category of potential problems. For gasoline van owners, this is the correct solution — and it's one of the reasons we recommend Webasto specifically for gas-powered platforms.
Gasoline Heater (Webasto)
Runs off your van's existing fuel tank. Single fuel system, no extra tank, no cross-contamination risk. The right choice for gas-powered Transits and ProMasters.
Diesel Heater (Espar / Webasto)
Ideal for diesel Sprinters and diesel Transits. Taps the engine's fuel supply. OZK installs both — we'll recommend the right unit for your platform.
How It Integrates With Your Build
A heater by itself is a component. A heater installed as part of an integrated climate system is a solution. At OZK, the Webasto isn't bolted in as an afterthought — it's planned alongside every other system in your van from day one. The fuel line routing is designed around your floor plan. The exhaust exit point is chosen for safety and airflow. The ducting is laid out to distribute heat evenly through the living space, not blast one corner while leaving the other side cold.
The Webasto pairs naturally with the MaxxAir fan for three-season ventilation. In mild weather, the MaxxAir handles airflow on its own — pulling fresh air in, pushing stale air out, and creating enough circulation to keep the interior comfortable without any heating or cooling. When temperatures drop, the Webasto takes over, and the MaxxAir can still run in exhaust mode to manage moisture from cooking, breathing, and condensation. The two systems complement each other across the full range of conditions you'll encounter on the road.
For four-season builds, we add AC options like the GREE EcoCool or Velit 2000R to complete the climate picture. With a Webasto for cold weather, a MaxxAir for ventilation, and an AC unit for desert summers, your van is comfortable in every condition — from a January night in Colorado to an August afternoon in Moab. And because we design the electrical system around the full climate package, every component has the power headroom it needs without competing for amps.
Webasto + MaxxAir
Heat and ventilation that work together. The Webasto warms the space while the MaxxAir manages airflow and moisture — year-round comfort from two proven units.
Webasto + AC
Full four-season climate control. Add a GREE EcoCool or Velit 2000R for hot-weather cooling and you're covered in every condition, every season.
Electrical Integration
The Webasto's minimal 14–29W draw is planned into your power budget from day one. No surprises, no overloaded circuits, no compromise to your battery bank.
Ready to Stay Warm?
Whether you need a standalone heater install or a complete climate system as part of a larger build, OZK will configure the right solution for your van and your travel style. Tell us about your setup and we'll quote it.
Why Professional Installation Matters
Fuel Line Safety
A Webasto installation requires tapping into your van's pressurized gasoline fuel system. This means cutting into fuel lines, installing a fuel pickup, routing new lines through the vehicle, and ensuring every connection is sealed to automotive standards. A fuel leak in a living space isn't a warranty issue — it's a life-safety issue. This is not a job for YouTube tutorials and hardware store fittings.
Exhaust Routing
The Webasto combusts gasoline to produce heat, which means it produces exhaust gases including carbon monoxide. The exhaust must be routed outside the vehicle through a properly sealed, properly positioned exhaust pipe — away from air intakes, windows, and any point where fumes could re-enter the living space. Incorrect exhaust routing is a carbon monoxide poisoning risk. Period.
Electrical Integration
The heater's control module, fuel pump, combustion air fan, and thermostat all need to be wired into your van's 12V electrical system with proper fusing, relay protection, and wire gauge for the current draw. In a van with an auxiliary battery system, the heater needs to be on the right circuit — drawing from the house bank, not the starter battery — with proper isolation.
Warranty & Certification
Webasto warranties require professional installation by a qualified technician. A DIY install that goes wrong isn't covered — and neither is the damage it causes to your van. OZK's installation meets Webasto's specifications, maintains your warranty, and comes with documentation that proves the work was done right. Your investment is protected from day one.
The Install Process
Consultation
We discuss your van platform, fuel type, travel patterns, and existing systems. If you're adding heat to an existing build, we review your electrical and layout to plan the integration.
System Design
We map the fuel line route, exhaust exit point, duct placement, and electrical integration for your specific van layout. Every detail is planned before we pick up a tool.
Professional Install
Fuel line tap, exhaust routing, heater mounting, duct installation, electrical wiring, and controller setup — all completed to Webasto specifications by our trained team.
Test & Handoff
Full combustion test, leak check on all fuel connections, exhaust seal verification, and controller programming. You get a walkthrough of operation, maintenance, and your warranty documentation.
Standalone heater installs typically complete in 1–2 days. Installs as part of a larger build are scheduled into the overall project timeline.