
Marlec Solar I-Boost + PV Water Heating Immersion Controller
IBOOST
Marlec’s innovative Solar iBoost+ enables you to consume excess energy your solar panels generate automatically. Just sit back and join over 70,000 homeowners who already enjoy the extra savings from free hot water!

Marlec Solar I-Boost + PV Water Heating Immersion Controller
Solar iBoost+ is Marlecs latest automatic water heating device for PV system owners.
The Solar iBoost+ concept is to divert the surplus solar photovoltaic energy generated at your home to heat the water in the household tank and save you money.
Its increased efficiency and extra functions deliver even more savings and when coupled with iBoost Buddy you can conveniently monitor and control Solar iBoost+ within the home.
With over 45,000 Solar iBoost products successfully working in UK homes installers recommend it!
Features
- The Solar iBoost+ is the UK’s best-selling PV immersion controller preferred by most solar installers.
- It saves you money by cutting water heating costs and reducing the use of your home’s boiler.
- Fitting a Solar iBoost maximises the consumption of the free solar energy generated at your property.
- Add the optional iBoost+ Buddy, and you can remotely monitor and control the Solar iBoost+ within your home.
- A built-in programmable cut-in threshold is flexible enough to combine use with battery storage systems to prioritise operation.
- Easy to install to new and existing systems in less than 30 minutes.
- Solar iBoost+ is made and backed by the UK’s oldest renewable energy company.
- 300 Solar iBoost UK installers.
Product | Controller |
Type | Water Heating |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.