Carbest Mobile Portable Gas Water Heater 30 mbar - Instant Camping Shower 25-50°C with 12 V Pump
- Carbest Mobile portable instant gas water heater, 30 mbar, for warm water outdoors. Adjustable 25-50°C, automatic ignition, 12 V submersible pump and shower head included.
Carbest Mobile is a portable instant gas water heater that delivers warm water from a tap or shower head wherever you have a propane or butane cylinder and a water container. A 12 V submersible pump draws water from the container, a 5 kW burner heats it as it flows, and you set the temperature smoothly with the gas knob. This is the 30 mbar version. It is meant for washing and cleaning outdoors - next to the motorhome, at the campsite, on the beach or after a bike ride. It is not intended for drinking water.

Key features
- water temperature adjustable from 25°C (approx. 5 l/min) to 50°C (approx. 2.2 l/min)
- automatic electronic ignition
- temperature sensor - burner goes out at 50°C outlet temperature
- flow sensor - burner only runs while water flows
- tilt switch - the unit shuts down if knocked over
- fold-out tap and flame viewing window
What is in the box
- Carbest Mobile 30 mbar water heater
- 12 V submersible pump with water hose
- shower head with 2.5 m hose
- 12 V cigarette lighter plug lead, 5 m
- carry bag
- gas hose and pressure regulator are not included - buy them separately to suit the rules of your country

How it works
- the unit raises the water temperature by an average of about 25°C above the source water
- the 12 V pump in the container pushes water through the heat exchanger
- the gas knob on top sets the burner output and so the temperature
- if the water is not warm enough, run it back into the container and through the heater again
- the flow switch on the shower head stops the water at any time - the burner goes out while the pump keeps running
- when you reopen the flow, the burner relights within about 5 seconds
Setting up and starting
- place the unit outdoors on a solid, level, non-combustible surface
- straighten all hoses so they are not twisted or kinked
- connect the pump to the water inlet and to the socket marked "pump"
- connect the gas hose and regulator to the gas inlet and the cylinder, tighten with a spanner
- open the cylinder valve and check for leaks with soapy water - never with a flame
- fold out the tap, attach the shower head and plug the 12 V lead into "DC input"
- put the pump into clean water - do not take water straight from rivers, lakes or the sea
- switch on: water flows within about 20 seconds and the electronic ignition lights the burner
- always check the water temperature before use, as it can be very hot
Safety according to the manufacturer
- use outdoors only with natural ventilation - never inside a motorhome, caravan, car, tent or under an awning
- the unit produces odourless carbon monoxide; using it in enclosed spaces can cause death
- keep at least 800 mm from combustible materials and people at the sides and above
- the flame goes out in wind above 10 km/h - set the unit up in a sheltered spot
- use only a CE approved gas hose and regulator matching 30 mbar
- the installation must meet the regulations of the country of use; ask a specialist if in doubt
- do not modify the unit or use adaptors for other cylinders
- never leave it running unattended and keep children away - the housing gets hot
- service and repairs by an authorised agent only
- after use disconnect the cylinder and store the unit in a dry, ventilated place
Technical data
| Parameter | Value |
|---|---|
| Manufacturer | Carbest |
| Model | Mobile, portable instant gas water heater |
| Gas pressure | 30 mbar |
| Gas | propane / butane |
| Nominal heat input | 5 kW |
| Nominal heat output | 4.2 kW |
| Power supply | 12 V DC |
| Water temperature | 25-50°C, infinitely adjustable |
| Flow rate | approx. 5 l/min at 25°C, approx. 2.2 l/min at 50°C |
| Ignition | automatic, electronic |
| Safety features | temperature, flow and tilt sensors |
| Dimensions | 357 x 300 x 300 mm |
| Weight | 6.4 kg |
| 12 V lead | 5 m, cigarette lighter plug |
Questions and answers
Are the regulator and gas hose included?
No. Buy them separately to match 30 mbar and the rules of the country where you use the heater.
Can I use the heater inside a motorhome?
No. The manufacturer allows outdoor use only, away from combustible materials. The unit produces carbon monoxide.
Is the water safe to drink?
No. The heater supplies warm water for washing and cleaning.
What is the flow rate?
About 5 l/min at 25°C and about 2.2 l/min at 50°C.
How are the pump and ignition powered?
With 12 V DC, for example from a car lighter socket, using the 5 m lead supplied.
Other Carbest water heaters
- Carbest Mobile 50 mbar - same design for 50 mbar
- CampingStar canister heating rod 12 V / 75 W
- CampingStar canister heating rod 230 V / 75 W
- Carbest CozyWater 8 l boiler
Manufacturer
Carbest, Boschring 10, 63329 Egelsbach, Germany.











