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2. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...

3. The 6 best-looking window air conditioners that ... - AOL

   www.aol.com/best-looking-window-air-conditioners...

   Best for Small Rooms: Frigidaire 8,000 BTU Inverter Quiet Temp Wi-Fi-Enabled Room Air Conditioner, $429 (Orig. $469) Frigidaire 8,000 BTUs is the sweet spot for any small room and this is the best ...

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

5. Automotive air conditioning - Wikipedia

   en.wikipedia.org/wiki/Automotive_air_conditioning

   Because the carbon dioxide used in car air conditioning is a recycled industrial waste product, it is an environmentally neutral solution. The Alliance claims that using a CO 2-based air conditioning system will reduce total car emissions by 10%, thereby sparing the planet 1% of total greenhouse gases. [citation needed]

6. Electric switchboard - Wikipedia

   en.wikipedia.org/wiki/Electric_switchboard

   It is an assembly of one or more panels, each of which contains switching devices for the protection and control of circuits fed from the switchboard. Several manufacturers make switchboards used in industry, commercial buildings, telecommunication facilities, oil and gas plants, data centers, health care, and other buildings, and onboard large ...

7. George Mason University student charged with plotting mass ...

   www.aol.com/news/gmu-student-charged-plotting...

   The FBI has arrested a student at George Mason University in Virginia for allegedly plotting a mass casualty attack on the Israeli consulate in New York, according to a federal court filing.

8. Inside the scandal over Texas Rep. Kay Granger’s mysterious ...

   www.aol.com/news/inside-scandal-over-texas-rep...

   Granger’s family and team have since confirmed that the 81-year-old rep is indeed at an independent living facility but denied reports that she is residing within the facility’s memory care ...

9. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.