Tent Zipper Vent Adapter for Diesel Heater/AC (2” & 3”) – ABS Printed *Free Shipping

5kW Combusto

Best for deep winter, larger spaces, and extended overlanding setups. Delivers maximum heat output for extreme cold, multi-person tents, or enclosed workspaces. Ideal if you camp at high elevation or in sustained freezing conditions.

2kW Combusto

Best for compact setups and travel-light builds. Provides efficient, reliable heat for smaller tents, solo campers, or short trips where portability and low power draw matter most.

Quick Recommendation

Choose the 5kW if you camp in harsh winters or need serious heat.

Choose the 2kW if you want a compact, efficient heater for lighter, mobile setups.

All power stations — even entry-level units — can run the Combusto using our new 110V adapter. The only time you may run into breaker-tripping issues is when using a 12V cigarette-lighter plug, as those ports are not designed for high startup loads.

Power Draw: Both the 2kW and 5kW models pull 8–15 amps during startup, then settle to 1–3 amps while running.

Fuel Consumption:

2kW model: ~0.2 L/hour

5kW model: ~0.4 L/hour (depending on heat level)

Priming & Break-In

Before first outdoor use, run the heater at maximum power with the lid open for about one hour. This allows the fuel to fully stabilize within the core. Some smoke from the heat wrap is normal during this process and is caused by condensation burning off. Use this time to monitor the unit and ensure everything is operating normally.

Ventilation & Safety

Always place the exhaust and muffler outside of any living space.

Ensure the air intake has fresh, unobstructed airflow.

Never block air vents—restricted airflow may cause overheating or force fumes back toward you.

Keep the heater out of reach of children.

Periodically inspect all fuel connections to confirm they are tight and secure.

No — the Combusto diesel heater isn’t an Alibaba rebrand, and we’re not tied to any sellers on that platform.

This isn’t rocket science or a patented invention — anyone handy could throw a heater into a Pelican-style case. The difference is we found a reliable core, we built and refined it around this engine, and stand behind it with real support. That’s what makes Combusto worth owning.

Out in the market, you’ll find $100 heaters that fail fast, and $2,500 builds that feel overpriced for something you use seasonally. We built Combusto to sit in the sweet spot: a solid, dependable mid-tier option that balances quality, reliability, and price without the nonsense.

Combusto uses a premium, high-elevation-rated core at its heart. Every component is right there in plain sight—we don’t play the shortcut games here. It’s rugged enough for mountain passes, easy to run-and-gun, and built to stay reliable in tough weather.

Most cheap diesel heaters use a thick aluminum shell mainly to hide what’s inside—because that’s where the corners usually get cut. Think flimsy water-jug fuel tanks, or worse, copper power terminals still being used for outdoor gear. It makes no sense.



And to be fair, there are solid brands we respect in this space, like LF Bros and Hcalory.

Warranty

We stand behind what we build. If anything comes up—whether you’re in or out of warranty—we’re here to help, whether that means troubleshooting an error code or walking you through a part replacement.

Return

You may return the Combusto within 7 days of delivery for any reason as long as it’s unused.

A 25% restocking fee + shipping fee will apply.

If the heater has been used, is missing its original packaging, or shows signs of wear, an additional restocking fee will apply. Because this product qualifies as hazmat, we must arrange the return shipment for you. Shipping costs vary by location, and you cannot send this item back on your own without a hazmat shipping permit.