In general, 80 degrees is too hot for a house if people are inside. However, if people aren't home during the day or for vacation during the summer, an indoor temperature of 80 degrees can save energy until you return and lower the temperature.
IMO 80F is the upper limit of comfortable indoor temperatures. It might feel great coming indoors from 110F into 90F, but after you get used to it, the 90 will also feel hot. I don't experience that at 80F or below.
If your thermostat is set at 80+ degrees, then the humidity inside of your home can easily get up above 70%. That's much higher than the recommended ideal indoor humidity of 30-50%. Having indoor humidity above 50% can cause serious issues for your health and your home.
Heat Index: 80-89 degrees F Heat Effect: Fatigue is possible with prolonged exposure and/or physical activity Recommendations: Limit your time outdoors; Stay well-hydrated. Drink 10 gulps every 20 minutes.
Above 80F, or 25C, no known risk in an otherwise healthy person.
Tips for Keeping Cool During Sleep
A cool or lukewarm bath or shower can help with that, suggests Raymann. For most people, the temperature in the bedroom at night should not exceed 72 degrees Fahrenheit, and it should be even lower for people that sleep best in a cool bedroom.
If your bedroom temperature is above 70 degrees, experts say it's too hot. On the flip side, sleeping too cold also has its issues. It does not affect your sleep cycles as drastically as being too hot, but it could potentially lead to other health issues.
CALIFORNIA OCCUPATIONAL SAFETY AND HEALTH STANDARDS BOARD
Heat Illness Prevention in Indoor Places of Employment. (a) Scope and Application. (1) This section applies to all indoor work areas where the temperature equals or exceeds 82 degrees Fahrenheit when employees are present.
If everyone in your household is either at work or school, then turning the temperature to 78-80 degrees will save you a chunk of change when the energy bill arrives. The one consideration to keep in mind is if you have four-legged friends at home. If this is the case, a temperature setting in the 76-78 range is best.
The World Health Organization recommends a thermostat setting no lower than 68 degrees while you're home. If you have children or seniors in your house, that number increases to at least 70 degrees. If your house is too cold, it can cause problems with blood pressure and circulation, as well as affect your heart rate.
People who live with long-term health conditions are more vulnerable to the effects of heat, including cardiovascular conditions and diabetes – with the temperature in their homes making it much harder to manage their health.
What's the Ideal Home Temperature? If you want to keep cool while saving energy in the summer, set your thermostat to 72 degrees when you're home. Whenever you're not at home or are asleep, consider increasing the temperature to between 78 and 80 degrees for even further savings.
The Safest Temperature for Humans and Pets
Heat can be dangerous, so you don't want to let your home get too hot. The absolute highest you should set your thermostat is around 82 degrees Fahrenheit.
76°-80°F: Potentially unsafe heat for all dogs, moderate to high risk for larger dogs. 81°-85°F: Dangerous heat for all dogs - use extreme caution or avoid walking outside. 86°-100°F: Too hot to walk your dog.
In general, 80 degrees is too hot for a house if people are inside. However, if people aren't home during the day or for vacation during the summer, an indoor temperature of 80 degrees can save energy until you return and lower the temperature.
For indoor workplaces where the temperature reaches 82 degrees Fahrenheit, employers must take steps to protect workers from heat illness. Some of the requirements include providing water, rest, cool-down areas, methods for cooling down the work areas under certain conditions, and training.
Research shows sleep can be disrupted by temperatures anywhere below 65 degrees Fahrenheit or above 75 degrees Fahrenheit.
“The consensus among most scientists is that anything higher than 75 or 80 is bad for sleep and potentially detrimental to health,” Baniassadi said. Heat affects sleep because the body signals the brain that it's time to fall asleep by lowering its core temperature. Sleeping in a hot room makes this difficult.
Heat stroke.
It's when your internal body temperature gets very high — typically above 104 degrees F. You have symptoms of heat exhaustion plus signs of brain dysfunction (encephalopathy), like confusion, behavior changes and slurred speech.
People aged 65 years or older are more prone to heat-related health problems. Stay cool and hydrated during hot weather. Older adults do not adjust as well as young people to sudden changes in temperature. They are more likely to have a chronic medical condition that changes normal body responses to heat.
Safe range means a set variation where there's minimal risk. If the room temperature is below 68 degrees Fahrenheit or above 74 degrees Fahrenheit, their health is at risk because the temperatures will be outside the safe range.
The best room 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 65 to 68 degrees Fahrenheit (15.6 to 20 degrees Celsius) for the most comfortable sleep.
The roof, the walls, everything exposed to the sun will absorb some energy and heat up through the course of the day. As the sun sets and temperatures outside cool down, the heat absorbed by the house will radiate back into the cooler air. This happens to the air outside and inside too.