Overview

• Speaking on his BBC Radio 5 podcast, Lewis said reducing a boiler’s flow rate could lower gas use by more than 9 percent without a noticeable change at the radiators.
• He advised turning off radiators in rooms that are not being used to avoid paying to heat empty spaces.
• He recommended placing reflective panels behind external‑wall radiators to bounce heat back into rooms, noting tin foil as a lower‑cost substitute and a 4‑metre roll available at Screwfix for £6.38.
• He warned that tumble dryers can cost about £1 per load and suggested airers or a low‑wattage dehumidifier, reported as roughly 3p per hour to run, as cheaper drying options.
• He added quick wins such as setting TVs to low‑energy modes and sealing drafts to reduce wasted energy.