ThermoSphere Electric System Boiler (4.5kW – 24kW) with Pump - 230/400V

Product Description

The ThermoSphere Electric System Boiler is a high-efficiency, slimline boiler designed for safe, clean, and powerful central heating in homes and commercial buildings without a gas supply. Available in outputs from 4.5kW up to 24kW, it’s perfectly suited for both radiator systems and underfloor heating, and is compatible with indirect unvented cylinders for hot water. This electric system boiler comes fully equipped for quick installation, offering reliable heating with no need for a flue, gas supply, or complicated maintenance.

• Flexible Output Range: Choose from 4.5kW, 6kW, 9kW, 12kW, 15kW, 18kW, or 24kW for everything from small flats to large commercial spaces.
• Space-Saving Wall-Mount Design: Slim footprint fits easily in kitchen cupboards, plant rooms, or utility areas.
• No Flue or Gas Needed: 100% electric operation means zero onsite emissions and silent running.
• Built-In Pump & Expansion Vessel: Streamlined installation with included circulation pump and 7-litre expansion vessel (spec varies with model size).
• 3-Stage Heating Elements: Multi-stage modulation for improved efficiency, comfort, and electrical safety.
• Simple Compatibility: Integrates with traditional radiators, wet underfloor heating, or indirect unvented cylinders for hot water.
• Smart Controls Ready: Compatible with thermostats, programmers, and smart home heating controls.
• Multiple Safety Features: Includes high-limit thermostat, low water protection, pressure relief valve, and overheat cut-out.
• Complies with UK & EU Regulations: Meets ErP Lot20 and UK electrical installation standards.
• Warranty: 2–5 years depending on registration and installer.

Key Technical Specifications

Model	Power Output	Voltage	Current (Max)	Dimensions (HxWxD, mm)	Max. System Pressure	Max. Temp	Weight
TSEFB-P4.5	4.5 kW	230/400 V	~21 A	755 × 215 × 150	2.0 bar	65°C	14 kg
TSEFB-P6	6.0 kW	230/400 V	~27 A	755 × 215 × 150	2.0 bar	65°C	14 kg
TSEFB-P9	9.0 kW	230/400 V	~40 A	755 × 215 × 150	2.0 bar	65°C	14 kg
TSEFB-P12	12.0 kW	230/400 V	~53 A	755 × 215 × 150	2.0 bar	65°C	14 kg
TSEFB-P15	15.0 kW	400 V	~22 A (per phase)	755 × 215 × 150	2.0 bar	65°C	15 kg
TSEFB-P18	18.0 kW	400 V	~26 A (per phase)	755 × 215 × 150	2.0 bar	65°C	15 kg
TSEFB-P24	24.0 kW	400 V	~35 A (per phase)	755 × 215 × 150	2.0 bar	65°C	15 kg

Applications

• Central heating for homes, apartments, commercial spaces, extensions, and conversions
• Gas-free installs, green homes, and off-grid heating systems
• Wet underfloor heating and radiator circuits
• Integration with indirect unvented hot water cylinders

What's Included?

• ThermoSphere Electric System Boiler (selected output: 4.5kW to 24kW)
• Integrated pump
• Wall mounting hardware
• User and installation manual

Why Choose the ThermoSphere Electric System Boiler?

• Powerful range – pick the right output from 4.5kW for small flats to 24kW for large homes or commercial needs
• Zero on-site emissions for greener living
• Simple installation and easy compatibility with smart heating controls
• Manufacturer support and up to 5 years warranty (subject to registration)