The drop in temperatures typical of winter brings with it concern about how to heat the spaces in the home without causing the electricity bill to skyrocket during these months. For years, the 19ºC rule has been the queen of beliefs to optimize domestic heating. However, a new study puts an end to this dogma. Experts reveal that a single temperature is not enough to meet current needs for well-being and energy efficiency.
Goodbye to the 19ºC rule
This rule appeared in the seventies, a time in history when the thermal characteristics of homes were very different from those of today. They had insufficient insulation, less effective heating systems and lifestyles cannot be compared to today. Energy management expert Nick Barber tells the French newspaper Press-Citron: “This was defined as an economic commitment, rather than as a true measure to optimize comfort.”
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Today, the panorama has changed thanks to advances in construction and reforms that focus on energy efficiency. Modern homes are better insulated and equipped with more sophisticated heating systems that allow more precise temperature control. Which has led to technicians now setting a new standard for saving on heating: 20°C is ideal for home spaces.
20°C is the new standard
One degree more may seem insignificant, but it alters the perception of well-being, as Brad Roberson, a heating systems specialist, explains: “The feeling of thermal comfort depends on many factors, in addition to temperature.” Being more or less cold depends on humidity, air flow, physical activity and even the clothing you are wearing.
According to some recent studies, the human body more easily maintains 37°C to 20°C, especially during sedentary activities such as working from home and reading. This also helps reduce the risk of condensation and mold growth, typical problems in homes where temperatures are excessively low.
Regulate each room
Specialists recommend a temperature for each room, depending on its use. This differentiated approach has been designed for the comfort of the home. Aim to keep the living room and the main living areas at 20°C, to carry out daily activities. However, in bedrooms, on the other hand, between 16 and 18°C can facilitate a restful sleep.
In the case of bathrooms, it is different. They recommend 22ºC to avoid thermal shock when leaving the shower. Transition spaces, such as hallways, can be kept at 17°C. In this way, not only well-being is guaranteed, but also savings on the electricity bill.
Smart thermostats allow you to adjust by zones and times, which can reduce your annual bill by up to 15% without losing comfort. Although increases usually increase consumption, establishing an adequate level avoids higher expenses derived from inefficient use of heating.