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2. HVAC Troubleshooting: Common complaints and how to ... - AOL

   www.aol.com/news/2008-03-26-hvac-troubleshooting...

   With the way we take a home's heating and cooling systems for granted, it s easy to think that because you press a button and air flows, everything's working as it should. In reality, this couldn ...

3. Freeze stat - Wikipedia

   en.wikipedia.org/wiki/Freeze_stat

   In practical situations, when an air coil freeze stat is not used, bypassed, or defeated, the air coil can freeze, and this causes a lack of air flow to the facility. [3] By contrast, when a water coil freeze stat is not used, the water coil can get so cold that it can freeze the cooling liquid in the exchanger and burst the exchanger. [ 5 ]

4. 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 ...

5. Heating, ventilation, and air conditioning - Wikipedia

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

   An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.

6. How to set your thermostat in the winter: What to know if you ...

   www.aol.com/news/set-thermostat-winter-know...

   The Energy Department says that even turning thermostats back 7 to 10 degrees from their normal settings for eight hours a day can save as much as 10% a year on homeowners' heating and cooling ...

7. 6 Common Reasons Why Your Refrigerator Isn’t Cooling, But the ...

   www.aol.com/finance/6-common-reasons-why...

   This tool controls the heating and cooling cycles. In the first part of the cycle, the timer supplies power to the cooling element. Then, during the second part of the cycle, the timer switches to ...