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Svans Boiler SV5 Review: Practical hot water for caravans and solar setups?

Svans Boiler 12v 5Liter Hot Water Tank 12v SV5 Mobile Home Camping Caravan Solar System
4.5
[Low-Pressure Compatible]  Works with low-pressure fittings and submersible pumps up to 0.5 bar.
[Compact, Easy Installation]  Small, compact design for simple integration into existing water systems.
[Fast Heat-Up]  Provides hot water in just 30 minutes for quick availability.
[Excellent Heat Retention]  Fully insulated tank keeps water hot up to 24 hours after shutdown.
[Energy-Efficient Temperature Control]  ECO mode maintains 65°C with low power draw around 0.5–0.8 A/h.
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A compact hot-water solution for mobile living, the Svans Boiler SV5 supplies low-pressure hot water for caravans, boats and off-grid systems. Enjoy warm showers and straightforward temperature control without complex plumbing. Is it the most practical option for regular touring and solar-powered setups?

⚡ At a Glance
  • Heating Performance: Low-pressure 5-litre tank provides hot water for mobile and small systems, compatible with pumps up to 0.5 bar
  • Best for: Caravans, motorhomes, boats and off-grid solar systems needing low-pressure hot water
  • Not ideal for: Properties with high-pressure mains systems or where high-pressure fittings are required

Low-pressure 5-litre tank supplies usable hot water for mobile applications. Thermostat control and full insulation reduce energy loss and standby draw.


Fast warm water – thanks to compact 12 V heater and 5-litre tank

A 5-litre storage vessel combined with the 12 V heating element allows water to reach usable temperature relatively quickly, with hot water available after around 30 minutes. Front-panel temperature control provides a clear set point and indicator lamp during warm-up.

Hot water for washing or a quick shower becomes available within half an hour, convenient when on the move or when relying on limited power sources.

Low energy temperature hold – with full insulation and ECO thermostat

Full insulation around the tank minimises heat loss, while the thermostat cycles the heater off when the set temperature is reached. Maintaining a 65° set point in ECO position draws approximately 0.5-0.8 A per hour.

Keeping water hot uses relatively little power, making the unit suitable for use with leisure batteries or small solar arrays.

Simple integration with caravan plumbing – with low-pressure compatibility up to 0.5 bar

Designed for operation with low-pressure fittings and compatible with foot, hand or small submersible pumps up to a maximum of 0.5 bar. Compact dimensions allow straightforward installation or integration into existing low-pressure systems.

Fits typical caravan and boat plumbing layouts and works with common small pumps, reducing the need for major plumbing alterations.

✨ The 4 Key Reasons for Svans Boiler SV5
  1. Quick warm-up - Provides hot water within 30 minutes for immediate use
  2. Long heat retention - Keeps water hot for up to 24 hours after switching off
  3. Low standby draw - Uses about 0.5-0.8 A per hour when maintaining 65°C
  4. Compact installation - Fits into small spaces and integrates with existing plumbing
📋 Technical Details at a Glance
  • Category: Home Improvement - Mobile hot-water boiler
  • Capacity: 5 litres
  • Operating Voltage: 12 V
  • Pressure rating: Low-pressure operation
  • Maximum pump pressure: Up to 0.5 bar (suitable for small foot/hand/submersible pumps)
❓ Frequently Asked Questions

Q: Is the boiler suitable for high-pressure mains systems?

A: Designed as a low-pressure device for operation with low-pressure fittings or with foot, hand or small submersible pumps up to a maximum of 0.5 bar.

Q: How long until hot water is available?

A: Hot water can be taken out after approximately 30 minutes, and full insulation helps keep water hot for up to 24 hours after switching off.

Q: How much power is required to maintain the set temperature?

A: When maintaining the temperature at a 65° ECO setting, power consumption is approximately 0.5-0.8 A per hour.

🏆 Our Verdict

Suited to caravans, motorhomes, boats and solar-powered off-grid systems that require low-pressure hot water. Compact design, simple thermostat control, full insulation and low standby draw make it convenient for mobile living. Minimal maintenance and the ECO setting support economical long-term use.