Martin Lewis and Octopus Energy's 5pm Rule for Warmer Homes and Lower Bills
As temperatures plummet and energy costs remain stubbornly high across the UK, Octopus Energy is urging homeowners to adopt a straightforward "5pm rule" to keep their homes warmer and slash utility expenses. This practical strategy, which focuses on maximising heat retention, has also been endorsed by Money Saving Expert founder Martin Lewis, who first highlighted it on ITV's The Martin Lewis Money Show several years ago.
The Enduring Relevance of the 5pm Rule
Despite being initially discussed in November 2022, experts on the official Money Saving Expert website confirm that this advice "still works" today. Its continued importance is underscored by the ongoing cost of living crisis, which continues to squeeze household budgets nationwide. The rule is designed to reduce reliance on expensive central heating by following a consistent daily routine that leverages natural heat sources and minimises energy loss.
How the 5pm Rule Works
Octopus Energy explains the rule in detail on its website, emphasising that pulling blinds or curtains before nightfall can significantly conserve energy and heat. This simple action can lead to a reduction in heat loss of up to 17%. Additionally, closing curtains over external doors helps block cold drafts and trap warmth inside, creating a more insulated environment.
The energy supplier provides clear instructions: "Whilst the sun is shining, keep curtains/blinds open to let in the free heat from the sun. When the sun sets, close curtains/blinds to keep the heat in and the cold out." To enhance insulation during the colder months, they suggest adding curtain liners or even a shower curtain to existing drapery for extra thickness.
Step-by-Step Guide to Implementing the Rule
- Daytime Routine: Keep blinds or curtains fully open while the sun is shining to allow free solar heat to penetrate your home, warming it naturally without any cost.
- Nighttime Routine: As soon as the sun sets, promptly close all curtains or blinds to seal in the accumulated warmth and prevent cold air from infiltrating.
- Enhancement Tips: For added insulation, consider using thermal or lined curtains. Martin Lewis recommends "tactical curtains" and suggests lining them with fleece, noting that cheap do-it-yourself methods are widely available online.
With sunset times in the UK currently ranging from approximately 4:50 pm to 5:20 pm, experts advise closing curtains around 5pm. This timely action helps maintain internal warmth, potentially delaying the need to switch on central heating systems and thereby reducing energy consumption.
Expert Insights and Additional Recommendations
Martin Lewis stresses the importance of rigorous adherence to this schedule. He explains, "When the sun is shining, it is letting light and heat into the house, so you want the curtains open. When it gets dark, it's not, so you want to keep the heat in by closing the curtains. I know we all know that, but doing it rigorously can help insulate, especially if you line it with a fleece."
Beyond curtain management, understanding ideal home temperatures is crucial for energy efficiency. The Energy Saving Trust recommends heating your home to the lowest comfortable temperature, typically between 18°C and 20°C for most people. British Gas adds that this may vary depending on the occupants, with different needs for healthy adults versus vulnerable individuals.
For optimal sleep, The Sleep Charity advises maintaining bedroom temperatures between 16°C and 18°C. Temperatures above 24°C can cause restlessness, while those below 12°C may make it difficult to fall asleep. Additionally, ensuring rooms are not draughty can further improve sleep quality and overall comfort.
By combining the 5pm rule with these temperature guidelines, households can achieve a warmer, more energy-efficient home without incurring excessive bills. This approach not only provides immediate relief during cold spells but also contributes to long-term savings and environmental sustainability.
