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2. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   Brushed DC ceiling fans. Before the current switched from DC to AC, there were productions of brushed DC ceiling fans. Those are wired directly to DC wires. Brushless DC ceiling fans. This type of fans uses BLDC technology which offers much higher efficiency than normal fans driven with traditional AC motors. These are quieter than AC motor ...

3. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   The building owner can monitor the system and respond to alarms generated by the system from local or remote locations. The system can be scheduled for occupancy or the configuration can be changed from the BAS. Sometimes the BAS is directly controlling the HVAC components. Depending on the BAS different interfaces can be used. [4]

4. List of Dyson products - Wikipedia

   en.wikipedia.org/wiki/List_of_Dyson_products

   Most of the Dyson fans and heaters are controlled by small infrared remote controls, which can be held magnetically on the appliance when not in use. A more-limited set of control switches is provided on the body of the appliance. The design for a "bladeless" fan had been patented by Toshiba in 1981, but was not marketed before the patent ...

5. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   Other standards that focus on energy conservation also impact the design and operation of ventilation systems, including ASHRAE Standard 90.1, and the International Energy Conservation Code. When indoor and outdoor conditions are favorable, increasing ventilation beyond the minimum required for indoor air quality can significantly improve both ...

6. Heating, ventilation, and air conditioning - Wikipedia

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

   In summer, ceiling fans and table/floor fans circulate air within a room for the purpose of reducing the perceived temperature by increasing evaporation of perspiration on the skin of the occupants. Because hot air rises, ceiling fans may be used to keep a room warmer in the winter by circulating the warm stratified air from the ceiling to the ...

7. Annuity vs 401(k): Which Vehicle Is Actually Better for Your ...

   www.aol.com/annuity-vs-401-k-vehicle-202514980.html

   This limits your ability to save, as you cannot surpass the contribution ceiling. Another downside is that you may incur penalties for making early withdrawals before you turn 59.5 years of age.