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

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)

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on all orders

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Delivery fee of £15

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX