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Mercury Combi Boiler

Outputs from 12kW to 26kW, provides instant domestic hot water & heating

The Mercury Electric Combi Boiler is the Premium Electric Boiler solution for Heating & Hot Water with the added benefit of Weather Compensation & Advanced Service Diagnostics.

This Electric Combi Boiler provides a very cost effective alternative to electric storage heating, oil, solid fuel or LPG systems. It is the perfect solution to properties with no access to mains gas supply and homes which have gas boiler restrictions e.g. listed buildings and bed-sit sleeping areas. Not only is the Electric Boiler the ideal choice for wet central heating but is also suited to Underfloor Heating.

The Mercury Boiler outputs are 12kW & 14.4kW Single Phase, and 19kW & 26kW Three Phase. The operating temperatures of the boiler can be adjusted using the easy to use Digital Control Panel with adjustable temperature outputs ranging from 30°C-60°C (Hot Water) and 20°C-85°C (Central Heating).


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Mercury Features

  • 100% efficient
  • Instant Domestic Hot Water
  • Enhanced Hot Water Flow Rate Due To Bare Wire Technology
  • Low Running Noise (32Db)
  • Suitable for Underfloor Heating
  • Rapid Heat Up Times
  • 5 years Guarantee *T&C’s Apply
  • External Weather Compensation
  • Automatic Power Modulation
  • Integral System Diagnostics
  • Easy-Fit Connectors & Sensors
  • High Temperature Cut-Out
  • Pressure Gauge
  • ErP Smart Pump

Mercury Installation Compliance Package

The Electric Heating Company understands the value of time, especially for busy installers. That’s why we’ve created “One Stop Shop” Component Compliance Packages that is the ultimate time-saving solution for installers who want a hassle-free and professional way to meet manufacturers requirements and Part L of the Building Regulations. Designed with your needs in mind, these value-for-money packages include all the necessary components required for a high-quality system install, making it easy for you to get the job done right the first time. Say goodbye to the stress of sourcing individual components and hello to the convenience of having everything you need in one place.

The Pack includes a single channel programmer, wireless room thermostat, filling loop and flow restrictor. Plus, you’ll receive a MagnaClean Professional3 Sense®, ADEY MC1+ Inhibitor, and ADEY MC3 System Cleaner to ensure optimal performance and longevity. Save time and money with The Electric Heating Company’s One Stop Shop Component Compliance Packages, the go-to solution for your next install of the Mercury Combi Boiler.

To ensure this hassle-free and professional installation of your Mercury Combi Boiler, be sure to purchase The Electric Heating Company’s Compliance Component Package.

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Mercury Compliance Pack_18010646

The Mercury boiler brings a new era to the Electric Combi Boiler market with the introduction of External Weather Compensation & Bare-Wire Heating Element technology for Domestic Hot Water.

Bare-Wire elements are more robust in tackling the formation of lime scale due to operating at higher temperatures with a lower surface area.

The Mercury also features advanced service diagnostics via the main interface.


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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