Propex and Morco are not interchangeable answers to one campervan heating question. First decide whether you need warm cabin air, hot water at a tap, or both. Then check the exact appliance's intended use and installation requirements.
Existing Morco owners: check the model before using a comparison to plan upgrades. The UK product recall notice concerns Primo 6 (MP6), Primo 11 (MP11), EUP6 and EUP11 open-flued water heaters supplied between 2018 and 2023. It identifies a gas-leak fire and explosion risk. Morco's appliance notice says these models should not be used. Stop using an affected heater and contact Morco immediately, including if it previously received a safety upgrade; do not attempt to check or test it yourself. Follow the recall instructions and use Morco's current recall page for the next steps.
The HS2000 heats cabin air
Propex describes the HS2000 as a gas-fuelled blown-air space heater with an electrical supply. Its room-sealed combustion arrangement and ducted warm-air output serve cabin heating. It does not become a tap-water heater because it burns LPG, and it is not a zero-electricity appliance.
If this is the model you are considering, start with the vehicle-specific manual, permitted installation and complete electrical and gas requirements. A space-heater purchase should not appear in a hot-water budget as though it provides a shower supply.
A water heater has a different job
A water-heating system must match the intended vehicle, water supply, demand, fuel, electrical supply and installation. Brand names and nominal litre figures do not establish those details. Distinguish storage capacity from a flow rate, and check any conditions attached to the quoted temperature rise.
Morco's replacement guidance is explicitly for caravan holiday homes. It discusses current room-sealed replacement models and requirements including mains electricity. It does not demonstrate that a particular unit is suitable for a self-built campervan. Ask the manufacturer and an appropriately qualified installer about your actual vehicle before ordering.
Write two separate requirements
For cabin heat, describe the occupied space, intended seasons, insulation, electrical supply and where air outlets could go. For hot water, describe how you will use it, the water system and the space available for the complete installation. This makes it easier to compare two suitable space heaters or two suitable water systems, rather than comparing appliances that solve different problems.
Request an installed quotation that includes the required flue, ventilation, fuel supply, controls, commissioning and maintenance access. Reusing an old hole, gas connection or cupboard does not by itself establish compatibility.
Keep the instructions and service history
Gas Safe Register's touring caravan and motorhome guidance explains the importance of appliance instructions, ventilation and competent attention to gas installations. An MOT is not evidence that the gas system is safe. Use an engineer whose qualifications cover the relevant LPG appliance and vehicle work, and follow the appliance maker's requirements.
There is no overall winner between these two brand names. The useful outcome is an appropriate, documented installation for each job and action on any recall affecting equipment already fitted. Sources checked on 25 October 2026; no installation or performance tests were performed.
