Solar Immersion Diverter Manchester
A solar immersion diverter routes surplus solar electricity to your hot water immersion heater instead of exporting it to the grid. Devices like the iBoost, myenergi Eddi, and Marlec Solar iBoost+ monitor your solar generation in real time and automatically divert excess energy to heat your water — giving you free hot water from energy you would otherwise sell back at a fraction of its value.
Manchester Renewables supplies and installs all leading solar immersion diverters across Greater Manchester. An immersion diverter is a cost-effective alternative or complement to battery storage, typically costing £600-£1,200 installed. For homes with an immersion heater and a solar PV system, a diverter can save £200-£400 per year on hot water heating costs.
What Is Included?
Diverter Supply & Installation
Supply and fitting of your chosen immersion diverter (iBoost, myenergi Eddi, or Marlec Solar iBoost+), including CT clamp sensor and all wiring.
Immersion Heater Check
We verify your existing immersion heater element is in good condition and compatible. If a replacement is needed, we can supply and fit one at the same time.
Solar System Integration
The diverter is configured to work alongside your existing solar panels and, if present, battery storage — so solar energy is used in the right order.
Smart Monitoring Setup
For myenergi Eddi and iBoost+, we set up the companion app so you can track how much free hot water your solar panels are providing.
Priority Configuration
If you have both a battery and a diverter, we configure the priority order — typically battery first, then hot water, then grid export.
0% VAT on Solar Equipment: Save 20% on installation
Solar immersion diverters installed alongside or as part of a solar PV system qualify for 0% VAT as energy-saving materials. This applies to both the diverter unit and installation labour. The saving is applied automatically by your installer.
Why It Matters
- Heating water with surplus solar is essentially free — replacing gas or peak-rate electricity that costs 7-24p per kWh
- An immersion diverter costs a fraction of a battery (£600-£1,200 vs £2,500-£11,000) and can save £200-£400 per year on hot water
- The myenergi Eddi can divert to two loads — immersion heater and underfloor heating, EV charger, or towel rail
- Diverters work alongside battery storage, capturing surplus energy that even a full battery cannot absorb
Cost Guidance
Solar immersion diverters in Manchester typically cost: iBoost/iBoost+ £600-£800 installed, myenergi Eddi £800-£1,200 installed. The Eddi costs more but offers dual-load diversion, better monitoring, and integration with the myenergi ecosystem (Zappi EV charger, Libbi battery). Payback is typically 2-4 years based on £200-£400 annual hot water savings.