Nixegym 110–245V to 12V Power Converter for 5KW/8KW Diesel Air Heaters — 25A Regulated AC-to-DC Adapter, Overload & Thermal Protec

The Nixegym 110V to 12V Power Converter is a compact AC-to-DC adapter that safely converts household 110–245V power to a stable 11–13V DC output up to 25A (300W) to run all-in-one 5KW and 8KW diesel air heaters and other 12V RV accessories.

If you use a diesel air heater in an RV, caravan, garage or workshop, the Nixegym converter provides shore-power compatibility without rewiring your vehicle's DC system. Designed for indoor and vehicle-adjacent use, this compact unit allows you to operate heaters, pumps, fans, and lighting from standard mains power while delivering built-in safety protections to reduce risk to connected equipment.

How does this adapter keep my diesel air heater running from mains power?

The converter accepts 110–245V AC and outputs a regulated 11–13V DC at up to 25A, giving your 5KW or 8KW all-in-one diesel air heater the steady low-voltage supply it needs when shore power is available. Voltage regulation minimizes spikes and drops that could interrupt heater cycles or damage electronics.

• Input range: 110–245V AC for global mains compatibility
• Output range: 11–13V DC to match common 12V heater requirements
• Maximum current: 25A (300W) to support high-draw heater models
• Regulated output reduces voltage fluctuations during operation

Is the Nixegym converter safe for long run-times and repeated use?

This adapter includes protections against overload, short circuit and overheating to protect both the converter and attached devices during extended use. Its design prioritizes stable output and thermal safety, helping avoid common failure modes in continuous or heavy-load scenarios.

• Overload protection to prevent damage from excess current draw
• Short-circuit protection to shut down rapidly on faults
• Thermal safeguards to reduce risk during prolonged operation
• Compact housing suitable for indoor and sheltered vehicle installations

How easy is installation and what devices will it power in an RV setup?

Installation is straightforward: plug the converter into a standard mains outlet and connect the DC output to your heater or 12V device—no complex rewiring required. Beyond diesel air heaters, the unit can power pumps, lights, fans and other 12V accessories when you’re connected to shore power.

• Plug-and-play connection to standard household outlets
• Compatible with most 12V DC systems in campers and vans
• Useful for lights, water pumps, fans and auxiliary electronics
• Compact 18×12×8 cm profile for easy storage and mounting

Will this work with my specific heater model and space limitations?

The converter is designed to support common 5KW and 8KW all-in-one diesel air heaters and other high-draw 12V equipment, provided their combined draw stays within the 25A/300W limit. Check your heater’s nominal current and account for startup surges to ensure safe operation in confined installations.

• Ideal for single heater installations within 25A/300W capacity
• Measure device startup current—some motors draw higher momentary amps
• Compact size fits in cabinetry, under benches, or near shore-power inlets
• Indoor-rated usage for RVs, caravans, garages and workshops

Who this product is for: The Nixegym 110V to 12V Power Converter is suited to RV owners, vanlifers, caravan and workshop users who want a simple, safe way to run a 5KW or 8KW diesel air heater and other 12V accessories from household or shore power. It's aimed at people who need a compact, reliable AC-to-DC solution with built-in protections and wide input compatibility. If you require continuous operation from mains without modifying your vehicle’s DC wiring and your combined device draw stays under 25A (300W), this converter is a practical choice.