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2. Attic fan - Wikipedia

   en.wikipedia.org/wiki/Attic_fan

   An attic fan installed underneath a roof. A powered attic ventilator, or attic fan, is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used. An attic fan can be gable mounted or roof mounted. Additional ...

3. 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.

4. Whole-house fan - Wikipedia

   en.wikipedia.org/wiki/Whole-house_fan

   A typical whole-house fan, with louvers closed when not operating. A whole house fan is a type of fan, commonly venting into a building's attic, designed to circulate air in an entire house or other building. The fan removes hot air from the building and draws in cooler outdoor air through windows and other openings.

5. 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 ...

6. US accuses CVS of filling, billing government for illegal ...

   www.aol.com/news/us-accuses-cvs-filling-billing...

   (Reuters) -The U.S. Department of Justice announced a lawsuit on Wednesday accusing pharmacy chain CVS of filling illegal opioid prescriptions and billing federal health insurance programs ...

7. Black Friday isn't over at Walmart: Here are the 10 best ...

   www.aol.com/lifestyle/black-friday-isnt-over-at...

   Walmart deals are always incredible this time of year, and while Walmart Black Friday deals haven't cooled down yet, they're only going to last a few more days. As Cyber Monday approaches, we took ...

8. Air handler - Wikipedia

   en.wikipedia.org/wiki/Air_handler

   Air handlers in Europe and Australia and New Zealand now commonly use backward curve fans without scroll or "plug fans". These are driven using high efficiency EC (electronically commutated) motors with built in speed control. The higher the RTU temperature, the slower the air will flow. And the lower the RTU temperature, the faster the air ...

9. Shop the best QVC Black Friday sales — including Oprah's ...

   www.aol.com/lifestyle/shop-the-best-qvc-black...

   Some of our favorite celebrity-endorsed items plus bestsellers — like a KitchenAid mixer for $99 off — are the hot deals to shop at QVC for Black Friday.