Proven Energy Savings


Funded by the UK Government's Department of Energy and Climate Change, the Radfan has been extensively trialed and tested in labs and real world homes to make sure that the Radfan helps you feel warmer and reduce your energy bill.

Field Trials

9 Housing Associations, 99 Homes

Testing devices in real homes is vital and so we teamed up with DECC and 9 housing associations to better understand how people respond to the Radfan. Each home lived with the Radfan for 2 months and was asked a set of questions before and after the trial.

Pre Radfan Installation

noted that can't afford their energy bill
do not feel warm enough at home
use secondary heating

Post-Radfan Installation

felt increase in thermal comfort
reduced heating use
reduced use of secondary heating

Average Expected Energy Savings

1875 kWh
reduction in heating energy use
saved per year

The Radfan works best in homes that are already insulated with 2 or 3 bedrooms. One of the key takeaways from participants is that they like the effect of feeling warm air coming from the unit.

People love the Radfan as they not only feel an increase in their comfort but it also gives them an extra layer of control to help keep warm and tackle ever increasing fuel bills.

"Made a big, big difference. A hell of a difference."

- A happy Gentoo tenant

The tenants who turned their thermostats down will save between 5 and 10% on their heating bill for every 1 °C reduction, or between £50 and £100 per year.

Lab Testing

Salford University Energy House

The Energy House at Salford University is a fully instrumented house built in an environmental chamber used by the likes of Saint Goban and B&Q to test energy-saving product.


We installed a Radfan in the living room of the Energy House and monitored the home, with and with out the Radfan running, over two 48 hour periods. The house's heating was set to run 24 hours a day, with the water set to 82°C, thermostat set to 21°C and the curtains opened at 9 AM and closed at 4 PM.

The result of this testing are summarised below and a full report can be viewed here.

The energy house have a nice summary of the work here on their website.


warmer at sofa height
reduction in heat lost through the window
reduction in thermal stratification

Annual Energy Saving

720 kWh
reduction in heating energy use
saved per year

Total Expected Energy Savings

2595 kWh
reduction in heating energy use
saved per year

Total savings for the Radfan of around £106 per year come from people feeling warmer and using their heating less, combined with the thermostat turning off sooner as demonstrated by the testing at Salford University.