Free-E 230 V


Dimplex Free-E is a wireless energy management system which works with a solar PV installation to heat the domestic hot water tank for free. Free-E does this by monitoring a household’s energy usage accurately and diverting surplus energy to the hot water tank’s immersion heater, instead of back to the grid.

By making use of this surplus energy, a household could automatically use an additional 70% of the energy generated – resulting in a significant reduction in energy bills. Does not affect the revenue from the Feed-in Tariff (FiT) or the 50% export tariff.

Free-E is up to 97% efficient at automatically converting PV energy to hot water. Even on cloudy days, the system can utilize up to 97% of the electricity generated within a home.

The system consists of an energy meter and Free-E unit which can be fitted retrospectively to homes with an existing solar PV installation or as part of a package with a new PV installation – no matter which PV system is used. It can also be used with other microgeneration systems such as hydro or microwind. There is no requirement to change the current hot water tank or electrical supply.

Features and benefits:

  • Fuel bill savings and CO2 emission reductions.
  • Fast and smooth automatic power modulation in compliance with all EU directives.
  • Indicates present, daily, monthly and lifetime imported and exported energy.
  • Wireless communication.
  • External input to activate boost mode.
  • User activated manual boost mode.
  • Built-in seven day timer for standard immersion heating.

Energy meter:

The energy meter sits adjacent to the incoming mains supply. It will typically be installed next to the fuse box. This monitors the flow of electricity and transmits this information wirelessly to the Free-E unit.

Free-E unit:

The Free-E unit sits next to the hot water tank. If surplus energy is available, it will divert this free energy to the immersion heater, rather than giving it away to the national grid.

Dimplex Free-E is not designed for use with Dimplex’s range of heat pumps or the Quantum space heating system.

CE certified with Low voltage and EMC directive approvals. Three year warranty.

General information

Uniclass 2015

Pr_80_51_51_22 Digital metering equipmentPrimary


V90/312 Photovoltaic system

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Specification data - Digital metering equipment

Product Reference

Free-E 230 V

Standard product features

Size (l x w x h):

  • Energy meter: 231 x 125 x 48 mm.
  • Free-E unit: 316 x 279 x 110 mm.



Technical characteristics:

  • Switch capability: 3 kW (maximum).
  • Voltage: 230 V.
  • Connection method: Wireless.


A1. Free-E Brochure

A1. Free-E Brochure

Third party certifications

  • CE