Although this is guidance and not a rigid rule, OSHA recommends keeping indoor office temperatures between 68-76°F and humidity at 20-60%. According to the National Weather Service's Heat Index Guide, heat index values are created for shady and light wind conditions.
Air treatment is defined under the engineering recommendations as, "the removal of air contaminants and/or the control of room temperature and humidity." OSHA recommends temperature control in the range of 68-76° F and humidity control in the range of 20%-60%.
According to the new standards, all indoor places of employment where the temperature reaches 82 degrees Fahrenheit or above must comply with regulations around access to water, cool-down areas, acclimatization, training, and more.
The New Regulations
Starting January 1, 2025, all new residential air conditioners and heat pumps must utilize A2L refrigerants. Older refrigerants like R-410, which are likely the refrigerant used by your current system, are being phased out.
While there are no specific federal regulations about working in extreme cold or heat, you do have a right to a workplace “free from recognized hazards .” That includes exposure to extreme cold and heat. Some states do have more rigorous rules regarding heat, and you can find the state plans here .
OSHA does not require employers to provide heat or air conditioning for work spaces.
It's illegal for your employer to retaliate against you (such as fire you) for reporting heat hazards that threaten your safety or health. So while you may not necessarily be able to walk out of work, you could have a legal claim against your employer.
In short, the 20-degree rule of air conditioning states that you should always keep your AC unit at no more than 20 degrees lower than the outside temperature. It means that, if the outdoor conditions are at 95 degrees, you should set your thermostat at no less than 75 degrees.
Part of that obligation includes having and maintaining air conditioning. If your employer does not fulfill their duty to maintain a safe environment then they may be liable for damages and you may be eligible for workers' compensation.
HVAC systems manufactured in 2025 and beyond will no longer use R-410A, the most common refrigerant in current residential air conditioning units and heat pumps. This is part of a global effort to reduce the environmental impact of refrigerants that contribute to global warming and ozone depletion.
Heat Index
Caution (80°F – 90°F HI); • Extreme Caution (91°F – 103°F HI); • Danger (103°F – 124°F HI); and, • Extreme Danger (126°F or higher HI).
Question: California regulations set the dosimeter threshold level at 80 dBA for hearing conservation and 90 dBA for compliance.
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.
What Does the Mandate Call For? Overall, the 2025 HVAC Mandate calls for the phase-out of a refrigerant that is commonly used in today's air conditioners. This refrigerant, known as R-410A, was previously released as a more eco-friendly alternative to previous refrigerants.
Charles' Law - As the pressure of refrigerant increases, so does the temperature. As pressure decreases in refrigerant, so does the temperature. The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases.
If you suffer any adverse medical effects from a workplace temperature issue, an experienced attorney can help file a claim for workers' compensation benefits. It is also possible that your employer could be compelled to take steps to fix the problem and prevent future harm to you and your coworkers.
Suppose an HVAC contractor installs a new system during a home remodel. An indoor air quality problem may be traced back to the improper installation or negligent maintenance of an HVAC system. In this case, a business or an injured party can sue an HVAC company.
Restaurant kitchens can generate a significant amount of heat generated by the ovens, grills and stoves used to make food. As a result, you must provide a cool area with air conditioning or fans where your employees can take their breaks.
Efficiency ratings are regional, so the new HVAC regulations for 2024 depend on where you live. New air conditioners in Northern regions must have a minimum SEER rating of 14. In Southern regions, the minimum SEER rating is 15 for most units.
Regulation AC of the Securities Act requires that brokers, dealers, and certain persons associated with a broker or dealer include in research reports certifications by research analysts that the views expressed in the report accurately reflect their personal view, and disclose whether or not the analysts received ...
While it is not usually illegal to install an air conditioning unit in your own home, there are several important factors to consider before taking on this DIY project. Local building codes, refrigerant handling, electrical work, and proper sizing and placement are all critical aspects of a successful installation.
If your AC unit refuses to turn on despite multiple attempts, it's crucial to consider it an emergency. A complete system failure could be due to electrical issues, motor failure, or a malfunctioning compressor.
Depends on the reason. If the person passes out from being drunk or due to illegal drug use while on the job, then yes they can be fired. If the person has an unforeseen medical event, low blood sugar, or a bad reaction to a recently prescribed medication, then no.