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2. Sick building syndrome - Wikipedia

   en.wikipedia.org/wiki/Sick_building_syndrome

   An air quality monitor. Human exposure to aerosols has a variety of adverse health effects. [7] Building occupants complain of symptoms such as sensory irritation of the eyes, nose, or throat; neurotoxic or general health problems; skin irritation; nonspecific hypersensitivity reactions; infectious diseases; [8] and odor and taste sensations. [9]

3. How to keep your air conditioning from failing in brutal heat ...

   www.aol.com/news/keep-air-conditioning-failing...

   Few things strike more fear in the hearts of South Floridians than a broken air conditioner in summer. ... Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

4. Condition monitoring - Wikipedia

   en.wikipedia.org/wiki/Condition_monitoring

   Ultrasound monitoring, if done properly, proves out to be a great companion technology for vibration analysis. Headphones allow humans to listen to ultrasound as well. A high pitched 'buzzing sound' in bearings indicates flaws in the contact surfaces, and when partial blockages occur in high pressure fluids the orifice will cause a large amount ...

5. Signs and symptoms - Wikipedia

   en.wikipedia.org/wiki/Signs_and_symptoms

   A medical sign is an objective observable indication of a disease, injury, or medical condition that may be detected during a physical examination. [7] These signs may be visible, such as a rash or bruise, or otherwise detectable such as by using a stethoscope or taking blood pressure. Medical signs, along with symptoms, help in forming a ...

6. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   Air conditioning has become increasingly prevalent on public transport vehicles as a form of climate control, and to ensure passenger comfort and drivers' occupational safety and health. In hot weather, air conditioning can prevent heat stroke, dehydration due to excessive sweating, electrolyte imbalance, kidney failure, and other issues due to ...

7. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Then the mixture air enters an indoor or outdoor heat exchanger section where the air is to be cooled down, then be guided to the space creating positive air pressure. The percentage of return air made up of fresh air can usually be manipulated by adjusting the opening of this vent. Typical fresh air intake is about 10% of the total supply air.