When your room is hotter than the outside, it's possible that the room has poor ventilation. Proper ventilation allows hot air to exit while cool and fresh air enters the room. South-facing rooms also heat up from more sunlight, while upstairs rooms will experience the Stack Effect as heat rises through the building.
Still, if you can make your indoor temperature about 25 degrees warmer than outside, then you will save money and remain heated. If the temperature is 30 degrees (or lower) outside, turn your thermostat up to at least 60 degrees, you will notice the difference.
The root cause of a warm house is the net energy gain over the amount it releases when the sun shines and warms the air. Your experience of a higher indoor temperature than the outdoor is the symptom of the building releasing the heat it absorbs – plus trapped heat.
In practice, you should be heating your home based on the age and health of your household. The WHO suggests 20 degrees as the ideal temperature for the old, young or unwell. For healthy adults, you should heat your home to a room temperature that feels comfortable.
Energy.gov 68 degrees is a good room temperature while you're awake at home, but recommends lowering it while you're asleep or away. Lowering your thermostat 10-15 degrees for eight hours can reduce your heating bill by 5-15%.
The best bedroom temperature for sleep is approximately 65 degrees Fahrenheit (18.3 degrees Celsius). This may vary by a few degrees from person to person, but most doctors recommend keeping the thermostat set between 60 to 67 degrees Fahrenheit (15.6 to 19.4 degrees Celsius) for the most comfortable sleep.
When your room is hotter than the outside, it's possible that the room has poor ventilation. Proper ventilation allows hot air to exit while cool and fresh air enters the room. South-facing rooms also heat up from more sunlight, while upstairs rooms will experience the Stack Effect as heat rises through the building.
During the night, your house emits radiation, but more than outside, since it is hotter (Stefan-Boltzmann equation). Your roof/ceiling emits radiation both inside and outside the house. This keeps the radiation "trapped" inside the house.
First, check for these common problems: Dirty air filter—A dirty filter restricts airflow, not letting your home get enough cool air. Closed vents—Closed vents in rooms can cause them to be hotter than other rooms. Open windows—Your conditioned air can flow out of open windows, leaving uneven temperatures in your home.
Poor air flow, bad sensors, or other broken components can also cause room temperatures to be different than your thermostat setting. The biggest clue that your furnace is the culprit is your heating bill.
They recommend that when it's 90 degrees outside, you should try setting your air conditioning thermostat at 80 degrees or higher. And when it's 95 to 100 degrees outside (and higher), you should set your thermostat at 85 degrees or higher.
In most cases, especially in residential applications, you should not run your air conditioner when outdoor temperatures are below 60 degrees. The air conditioner does function, but you are going to burn out the compressor fairly quickly.
Your AC Is the Wrong Size
It makes sense that if your air conditioner's cooling capacity isn't enough for the space it needs to cool, you'd experience discomfort. So if you're cranking up the AC and still feeling warm and sticky, the AC might be too small to properly cool the size of your home.
The fan won't actually change the temperature of the room, it will just make it feel warmer. Be sure to turn it off when you aren't in the room to save energy. You only need your fan on the lowest setting to get the benefit. Any higher and you might actually feel colder.
High temperatures can also cause your roof to expand and warp causing shingles to crack making them more likely to leak. The heat can also dry out the caulk around flashing and weaken your roof structurally.
Most of the two domestic thermostats are located in a central location of the house, as a corridor for the temperature detected as being an average of the total temperature of the house. In most cases, the temperature sensor is inside the thermostat, but not always.
If the temperature is higher outside than it is inside, you should keep your windows and curtains closed. This will shut the heat out, and help to keep your home cool. If, however, it's cooler outside or there's a pleasant breeze, then you should open the windows.
Open and shut case
Closing doors, windows and curtains during the heat of the day can help the house stay cooler than outside. Ceiling fans provide air movement to make you feel cooler.
There may be drafts and pockets of colder air near the floor; The walls are colder and don't emit the usual amount of infrared radiation, so you lose heat due to your body emitting more IR than it receives; You may spend more time indoors and hence have less physical activity, so your body generates less heat.
A safe temperature is accepted to be between 68 and 74 degrees Fahrenheit for people above the age of 65. The temperature inside your home should not reach below 68 degrees Fahrenheit in any case, as that increases the risk of respiratory disease and even hypothermia if there is prolonged exposure.
Adjust Home Temperature Zones
Lower bedroom temperature to around 68. Keep the temperature in living areas around 72. Increase the thermostat temperature downstairs and in basements. Lower temperature for zones with lots of direct sunlight.
So why is 68 degrees the magic number? The energy saving key is lowering the temperature (about 10-12 degrees Fahrenheit or 6-8 degrees Celsius) at night or when you're away.
How cool should my house be if it's 100° outside? The majority of air conditioning units are designed to only cool the air about 20 degrees from the outside temperature. If the temperatures outside are approaching triple digits, you should set your thermostat at about 78°.