As winter closes in and energy prices continue to worry families across the UK, Octopus Energy is giving fresh backing to Martin Lewis’ well-known “4pm Rule”, a simple habit that could help people stay warm while keeping their gas and electricity bills in check.
With the cost-of-living crisis still affecting millions, the company says this small change can make a noticeable difference to household comfort and monthly energy spending.
What Exactly Is the “4pm Rule”?
The “4pm Rule” is straightforward and easy for anyone to follow. At around 4 pm, roughly the time the sun sets during the colder months, homeowners are encouraged to close their curtains or shutters.
It may sound nearly too simple, but this one action can help reduce heat loss by an estimated 17, meaning homes stay warmer for longer without nudging the thermostat up.
Numerous homes formerly looking for ways to reduce home heating costs, and closing curtains beforehand is one of the most cost-effective tricks available.
Why the Rule Matters for Energy Saving?
Octopus Energy says the idea is especially helpful for people trying to lower their central heating usage. By shutting out the cold before it settles in, households can:
- Keep rooms warmer through the early evening
- Cut back on expensive boiler use
- Make better use of any heat gained naturally during the day
- Improve overall energy efficiency without spending money
It’s a tip that fits neatly into everyday life, no technical know-how, no gadgets, just a small change that can help ease the pressure on energy bills.
Curtains That Boost Heat Retention
While any curtain works to some degree, Octopus Energy points out that the right materials can make a bigger impact. Thermal curtains, especially those with thicker fabrics, are known to trap warmth far better than thin or featherlight options.
Ideal thermal curtains typically include:
- Heavy fabrics such as wool or velvet
- A high thread count for added insulation
- A blackout or thermal lining
- A design long enough to reach the floor and cover the full window
Some homes also choose to add a pelmet or valance above the window to help block draughts and stop warm air escaping.
These upgrades are especially useful for people living in aged homes, parcels with single-glazed windows, or apartments that naturally feel colder.
A Practical Tip for the Months Ahead
With energy tariffs still a major concern and many households searching for simple, realistic ways to cut costs, Octopus Energy’s reminder arrives at just the right moment.
The “4pm Rule”, paired with well-chosen curtains, gives families an easy, budget-friendly way to improve home insulation, reduce heat loss, and stay comfortable through the darkest months of the year.
In a time when every bit of warmth counts, this practical advice offers a welcome balance between saving money and keeping cosy, something households across the UK can appreciate as winter really sets in.
