Propex Heatsource Underslung LPG Vapour Tank Fitted in a CCCAMPERS CamperWe like to think the Propex blown air heaters provide a valuable must have accessory to accompany you on every camping expedition, offering the ability to keep warm and comfortable and extending your enjoyment whilst providing good value, reliability, and efficiency. When compared to diesel heater alternatives, Propex heaters use less power from the 12v supply, cost less, are clean burning, and have no consumable parts that call for a regular service.