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Comet Electric Boilers

Outputs from 6kW to 14.4kW, designed to eliminate unnecessary external plumbing and pipe work

Comet Electric System Boilers Compact & Efficient Wet Heating Solution

Output Range

  • Single phase: 6kW, 9kW, 12kW, 14.4kW outputs
  • Three phase (commercial): 12kW, 14.4kW, 23kW, 39kW outputs

Space-Saving Design Engineered to eliminate unnecessary external plumbing and pipework for a compact installation.

Versatile Applications Ideal for wet system radiators and underfloor heating in residential or light commercial properties.

Configuration Flexibility Can be installed for heating only or combined heating & domestic hot water via ‘S’ plan with EHC heat packs.

Advanced Heat Exchanger Incorporates 6-stage modulating stainless steel heat exchanger to reduce energy consumption.

Integrated Components Includes pump, auto air vent, expansion vessel, auto bypass – all within the casing.

User-Friendly Controls Easy-to-use control panel displays flow/return temps, flow rate, output. Built-in diagnostics to aid installation/maintenance.

Temperature Adjustment Operating range from 20°C to 85°C to suit requirements.

High-Efficiency Performance
Modulating design optimizes output for maximum energy savings.

Upgrade to the reliable, high-efficiency Comet system for a wet heating solution engineered with integrated components for a compact, easy-to-install package.

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Comet Features

  • 100% efficient
  • Integral sealed system kit
  • Virtually silent in operation
  • Suitable for central heating only or central heating & hot water
  • Suitable for Underfloor Heating
  • 6 Stage Heating
  • Stainless Steel Heat Exchanger
  • 5 Year Warranty (T&C’s Apply)
  • Volt-Free Control Connections
  • Integral System Diagnostics
  • Easy-Fit Connectors & Sensors
  • In-Built Fault Finding Diagnostics
  • High Current Thermal Cut-Out
  • Vortex Flow Temperature Sensor
  • Digital Pressure Gauge
  • ErP Smart Pump
  • Removable bottom tray

Comet Schematics

Comet Schematics


At EHC we recognise the growing demand for eco friendly heating and hot water solutions and all of our products are designed with this in mind.

Owing to the fact that Electric Boilers can be run from renewable resources such a solar power, it means that your boiler will run completely free from CO2 emissions.

Electric Boilers are also 100% efficient which means that for every 1kW of electricity you use, you will receive 1kW of heat.

Moving to electric is easy, as you don’t need to replace any of your existing pipework or radiators.

By 2050 the UK Government aim to generate emission-free electricity. Electric Heating will be a major facilitator in reaching this goal and in 2020 the Government pledged 40GW of wind generated electricity in the UK by 2030. This is enough electricity to power every household in the UK!

By moving to Electric Heating, with a renewable energy tariff you’ll not only be moving to carbon-free heating, but doing your bit to heat for a renewable future!


EHC - The Electric Boiler Specialists

  • Installation is quicker than a gas system
  • The wiring of an Electric Boiler is the same as an Electric Shower
  • Electric Boilers can be used for Open Vented Systems
  • Can be used as back-up for Heat Pumps
  • Standard radiators and valves can be used with Electric Boilers
  • EHC Electric Boilers have a soft start to avoid power surges
  • Electric Boilers are almost silent when operating
  • Electric Boilers emit no noxious fumes or gases
  • Can be used with underfloor heating systems
  • EHC only use and recommend High Efficiency ErP Smart Pumps



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© 2024 The Electric Heating Company Ltd

Company Number: SC289495

VAT Number: GB442070921

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01698 820533

Block 5, Unit 40, Third Road, Blantyre Industrial Estate, Blantyre, South Lanarkshire G72 0UP
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