Electric System Boilers
Flexible heating for a renewable future
✓ Range rateable heating and hot water to match property requirements
✓ Easy to install
✓ Minimal servicing & repairs
✓ Flexible sighting – No flue required
✓ Works with existing radiators
✓ Power modulates from 2kW to full power using less energy
✓ Almost 100% efficient
Primus Flex Electric System Boiler: Efficient, Future-Ready Heating
The Primus Flex electric system boiler is a smart, energy-efficient solution for homes with wet central heating or underfloor heating. Designed as a direct replacement for gas system boilers, it seamlessly integrates with existing radiators and pipework, eliminating the need for costly modifications.
When paired with an unvented indirect hot water cylinder, it delivers reliable hot water for larger homes and multi-bathroom properties. By integrating a timer, homeowners can take advantage of cheaper off-peak electricity, reducing costs while supporting a balanced, renewable-powered grid. With zero emissions, quiet operation, and flexible installation, the Primus Flex system boiler is the smart choice for modern, sustainable heating.
✓ Pre-wired for ease of installation
✓ Suitable for use with vented and unvented cylinders
✓ Integrated pump and expansion vessel
✓ Zero risk of carbon monoxide emission or gas leak
✓ No flue is required
✓ Range rateable heating and hot water to match property
requirements
✓ Near silent in operation
✓ Minimal moving parts
✓ Minimal servicing required
✓ Flexible siting as no flue is required and it’s very compact in size
✓ Ideal for flats and properties with low heat loss, no access to gas,
and high hot water demand
✓ Ability to use low cost and 100% renewable tariffs
✓ Recommended to be used with RF or WIFI programmable thermostats
✓ Ideal for integration with solar PV system when used with a cylinder
Flex Electric System Boilers
Available in 7Kw, 14Kw or 24Kw
Electric System Boiler Schematic
Electric Combi Fitters Kit
Everything you need to get the job done
We put this kit together so you have the right parts at the right time for the right price
✓ Sentinal Vortex 250Magnetic filter
✓ Sentinal X300 System Cleaner
✓ Sentinal X100 Inhibitor
✓ EPH Combi Pack 4
✓ WRAS Approved Filling Loop
✓ Automatic Bypass Valve
✓ 2 x 1/2″ & 2 x 3/4″ Isolation Valves
✓ Caleffi Flow valve 5ltr/min
Installation Guides
Register as an installer to gain access installation & set up guides
At EHS we recognise the growing demand for eco-friendly heating and hot water solutions.
Electric combi boilers can be run from electricity produced from renewable resources such as wind or solar power, which means that you can run your boiler completely free of CO2 emissions.
Moving to electricity is easy, as you don’t need to replace any of your existing pipework or radiators.
By 2050 the UK Government are aiming to generate 100% 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!
Electricity prices are currently 3 times more than gas, but as gas is phased out and electricity becomes the fuel of choice, prices per unit of energy are likely to reach parity in the not-too-distant future, and as an electric boiler is 98% efficient, it will be cheaper to run.
By moving to electric heating with a renewable energy tariff, you’ll not only be moving to carbon-free heating but doing your bit for a renewable future!