Marlec Solar I-Boost + PV Water Heating Immersion Controller

Marlec Solar iBoost+ – Automatic PV Immersion Controller for Free Hot Water Heating

The Marlec Solar iBoost+ is a smart water heating controller designed to divert surplus solar energy to your immersion heater, reducing your reliance on gas or electric boilers. Compatible with most PV systems, it enables homeowners to maximise their solar investment by generating free hot water. With over 70,000 units installed across the UK, it's the trusted choice for energy-saving homes.

• Maximise Solar Savings: Automatically uses excess PV energy to heat water, cutting boiler usage and bills.
• Installer-Recommended: The UK’s best-selling PV immersion controller, trusted by over 300 installers nationwide.
• Remote Monitoring Option: Add the iBoost+ Buddy (sold separately) to monitor and control your system wirelessly from within the home.
• Battery Compatible: Programmable cut-in threshold allows operation alongside battery storage systems.
• Fast Installation: Easy to retrofit to existing systems – typically installed in under 30 minutes.

Technical Specification

• Product Type: PV immersion controller
• Controller Model: Solar iBoost+
• Control Options: Optional wireless Buddy display available
• Installation Time: Less than 30 minutes
• Compatibility: Works with existing/new PV systems and battery storage setups

✅ Start saving with the Marlec Solar iBoost+ – the UK’s most trusted way to turn your solar surplus into free hot water!