when to turn on heat in house

The best time to turn on the heat in a house generally depends on indoor temperature, personal comfort, and health considerations. Heating is often recommended when indoor temperatures consistently drop below 18°C (about 64°F), with a slightly higher target of around 20°C (68°F) for elderly or vulnerable individuals. Many people typically start using their heating in early to mid-October when outdoor temperatures drop below about 15°C (59°F), which aligns with NHS guidance and typical weather patterns. It is more efficient to heat only when needed and avoid keeping the heating on overnight, relying instead on residual warmth under covers. Using a timer or smart thermostat to maintain comfortable temperatures while reducing energy waste is also advisable. Homes with poor insulation may require heating to be turned on earlier than well-insulated homes. Ultimately, the decision also depends on how comfortable the occupants feel at indoor temperatures during the cooler months.