Is It More Efficient to Leave the Heater On or Turn it Off?

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In summary, the debate on whether to leave the heater running constantly or turn it off when leaving the house centers around energy efficiency and cost. Some argue that it takes more energy to bring the temperature back up each day, while others say it saves energy and money to turn it down. Factors such as insulation, temperature difference, and electricity pricing also play a role in determining the most efficient heating strategy for individual circumstances. However, it is generally recommended to keep the thermostat at least 5-10 degrees above freezing at all times.
  • #1
DavidSnider
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Is it better to leave the heater going constantly or turn it off when you leave the house?

I've heard people tell me that it takes more energy to bring it back up to temperature every day than it does to just leave it running all day. That doesn't seem intuitive to me.. is it true?
 
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  • #2
It saves energy and money to turn it down, because the rate at which heat is conducted through the walls from indoors to outdoors is proportional to the temperature difference between indoors and outdoors. An amount of time that it's cooler inside will be an amount of time during which the rate of the loss of heat will be slower.
 
  • #3
It may save money to keep it on. At peak times of day, the energy grid has to turn on their most expensive and inefficient generators, and so raising the temperature with peak electricity tends to cost more than using extra off-peak electricity to avoid this. But home electricity meters often do not account for any price fluctuations.
 
  • #4
It's a good question, and in my opinion the answer can be very different with different circumstances. So I think it's important to first ascertain your specific circumstances and then adjust how you use your heat.

For example, if you live alone, are gone for 12 out of 24 hours, it's above freezing, your home is "reasonably" insulated and takes only 15-20 minutes to heat your home to 68... then it might be extremely wasteful to leave the heat on at 68(or whatever) for the 12-hours your away from home.

Of couse, in any circumstance, one should keep the thermostat at least 5-10 degree's above freezing at all times.
 
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Related to Is It More Efficient to Leave the Heater On or Turn it Off?

1. Is it more energy-efficient to leave the heater on all the time or to turn it off when not in use?

The answer to this question depends on several factors, such as the type of heater, the climate, and personal preferences. Generally, it is more efficient to turn off the heater when not in use, as it will not consume energy unnecessarily.

2. Can leaving the heater on all the time save money on heating costs?

Leaving the heater on all the time may save some money in the short term, as the room will always be warm. However, in the long run, it may lead to higher heating costs due to the constant energy consumption. It is more cost-effective to only turn on the heater when needed.

3. Is it better to set the heater to a lower temperature or turn it off completely?

It is generally more efficient to set the heater to a lower temperature rather than turning it off completely. This way, the heater will use less energy to maintain a constant temperature in the room, rather than having to work harder to warm up a completely cold room.

4. Does the size of the room affect the efficiency of leaving the heater on or turning it off?

Yes, the size of the room can affect the efficiency of leaving the heater on or turning it off. A smaller room will heat up faster, so it may be more efficient to turn off the heater when not in use. In a larger room, it may be more efficient to leave the heater on at a lower temperature.

5. Are there any safety concerns when leaving the heater on all the time?

Leaving the heater on all the time can be a safety hazard, especially if it is an older or malfunctioning heater. It can also increase the risk of fire, especially if there are flammable materials nearby. It is important to follow the manufacturer's instructions and safety precautions when using a heater.

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