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2. Thermostat - Wikipedia

   en.wikipedia.org/wiki/Thermostat

   The advantage of the low voltage control system is the ability to operate multiple electromechanical switching devices such as relays, contactors, and sequencers using inherently safe voltage and current levels. [15] Built into the thermostat is a provision for enhanced temperature control using anticipation.

3. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   This limit controller may shut the furnace off if the blower fails or if something is blocking the air flow. The heated air is then sent back through the home through supply ducts. In larger commercial applications, central heating is provided through an air handler which incorporates similar components as a furnace but on a larger scale.

4. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   A two-stage furnace has to do two stage full speed and half (or reduced) speed. Depending on the demanded heat, they can run at a lower speed most of the time. They can be quieter, move the air at less velocity, and will better keep the desired temperature in the house.

5. Control (management) - Wikipedia

   en.wikipedia.org/wiki/Control_(management)

   A home thermostat is an example of a control device in a closed-loop system. When the room temperature drops below the desired point, the control mechanism closes the circuit to start the furnace and the temperature rises. The furnace is deactivated as the temperature reaches the preselected level.

6. Your car's low tire pressure light may come on this week ...

   www.aol.com/cars-low-tire-pressure-light...

   If the light stays on, you'll want to add air to your tires using an air compressor, which you can find on a pay-to-use basis at a lot of gas stations (some folks also have one of their own in the ...

7. Damper (flow) - Wikipedia

   en.wikipedia.org/wiki/Damper_(flow)

   A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control - for example, in the case of ...