Smart Thermostat in Toronto, ON

At What Temperature Should You Turn on the Heat?

Changes in weather and climate conditions lead many homeowners to ask the simple question, at what temperature should you turn on the heat?


Before you switch on the furnace, there are many things to consider. Let’s find out the optimal temperatures to turn on the furnace.

Day Temperature 

According to Energy Rates, the ideal temperature for the day is 20° Celsius (or 68° Fahrenheit) when you are at home during daylight hours.

Night Temperature 

You should adjust your thermostat between 17 and 19 degrees Celsius while in bed.

When is the Best Temperature to Turn on the Heat? 

Many people want to raise the thermostat to maintain a comfortable temperature in cold weather. However, we don’t want to spend a lot of money on energy. According to a 2006 survey, Canadians spend $1,895 per year on heating and cooking. It is therefore essential to find ways to reduce energy costs.


Homeowners with energy-efficient homes, like energy efficient doors, can save money on their energy bills.


When the temperature outside drops below 18 degrees Celsius, most homeowners turn on their heating system. Some homeowners may wait a bit longer to save energy.

Energy-Efficient Heating System

Heating indoors is possible with older heat pumps and furnaces. However, they are more efficient than modern models. To increase energy efficiency and the furnace’s response time to temperature changes, you can buy add-on appliances such as a furnace humidifier and attach them to your heating system.


By simply turning down the thermostat at night or during the day, you can save up to 10% on your heating costs. You can manually adjust your home’s temperature, but it is easier to use a smart or programmable thermostat. Here are some options for thermostats:

Set the Temperature Remotely Using a Wi-Fi Thermostat 

A WI-FI thermostat allows you to control the temperature from anywhere. Remote temperature control is possible with the remote app.


After downloading and installing the remote app on your smartphone, you can now monitor the temperature of your phone and adjust it accordingly.

Smart Thermostats 

Because they offer remote control, smart thermostats are very popular among furnace owners. As long as you have a steady wifi connection, you can adjust the thermostat temperature from your smartphone.


Some smart thermostats have motion sensors that turn on the display when someone enters the room.


Programmable thermostats are also an option. Depending on the model, some models might have remote control capabilities. Others may not. Remote control features can vary between models.

Summary – At What Temperature Should You Turn on the Heat?

It depends on the time and temperature of the day when you want to turn on your heat. The ideal temperature for the day is 20 degrees Celsius. You should adjust your thermostat to 17-19 degrees Celsius at night.


We recommend homeowners buy a smart thermostat to conserve energy. Smart thermostats automatically adjust the temperature based on the day, saving you time and money. You might also want to look into energy-efficient equipment to save more energy.