Belief 5kW Diesel Air Heater Base Kit (12V)


The Belief 5kW base diesel air  heater kit is suitable for replacement of an existing heater, combining with a marine installation kit or for a super low cost installation. Backed by 2 year warranty, spares and service of a real company at a price hundreds of dollars below the European alternatives, it is great value for money.

If you are looking for a heater to install in a caravan or RV, check our complete kits which are designed to contain all the components you need for a quality installation.

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Our Belief diesel air heater 5kW base kit comes with a 2 year warranty and full service and parts backup. This is the base kit for replacement of an existing heater, combining with a marine installation kit or for a super low cost installation. Please note that this kit does not include some essentials, such as a mounting plate, ducting or exhaust. These bits can be added separately if needed.

This kit only contains the heater and associated parts as listed below. We also offer a complete, full installation kit, which we recommend if you are doing a new installation.

Key features include:
  • high quality Belief diesel air heater
  • simple to use rotary controller
  • wiring loom, nuts screws, fuel line etc.
  • instructions written by us based on our experience doing installs
  • 2 year warranty
  • full phone backup and support, spares and service
We are an Australian based business and manufacture, pack, and modify our diesel air heater kits to suit Australian conditions.  We will also make up a specific air diesel  heater kit to suit your boat/van/greenhouse/tiny house/special application – call us to discuss.
We have been importing and selling  diesel heaters for over 5 years from the same manufacturer and have sold thousands with no major reliability issues. Heaters we sold over 5 years ago are still out there performing well.
For marine installations check out our marine exhaust kits and talk to us about kitting up a heater specifically for a marine installation.
Fuel tanks are sold separately. We have a range of suitable fuel tanks available, including a DIY fuel tank kit to modify an existing fuel tank.
  • diesel air heater
  • exhaust pipe
  • wiring loom
  • inlet air pipe
  • fuel pump and mount
  • fuel hose and connectors
  • standard mounting plate
  • user manual
  • installation instructions
  • rotary controller
  • various nuts, screws etc.

Belief 5kW Heater Owner’s Manual

Diesel Heater Fitting Instructions

Manual Controller Instructions

Belief 5kw Dimensions


All air heaters sold by Dieselheat carry 24 MONTHS warranty from date of purchase. Warranty is return to base which means you are responsible for returning any defective heaters to us for repair.

If you have an issue every attempt will be made to fix it via phone or email. Warranty is on heaters only and does not cover any issues caused by installations performed by the customer or other parties. If we can’t fix any issues with heater operation over the phone or email then the unit and possibly other parts as we suggest to you depending on the issue must be returned to us using an Australia Post air bag at your expense.

On arrival at our premises we will set the unit up on our test bench to ascertain what problem has occurred. Any defects or issues with the heater will be fixed free of charge and the unit will be shipped back to you at our expense. If the unit operates without any problems it will be deemed an installation problem and this is not covered by warranty. Any costs involved in returning the unit to the customer is at your expense.

Please note all diesel air heaters need to be run at a high power setting for around 15 min every 4 to 5 hours to prevent carbon build up. If this is not done and the heater fails due to carbon build up this is not covered by warranty and any repairs needed will be charged.

Please do not try to disassemble the heater yourself whilst it is still under warranty without consulting with Dieselheat.

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