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2. Should You Cover Your Outdoor Faucets In The Winter? An ... - AOL

   www.aol.com/cover-outdoor-faucets-winter-expert...

   Types Of Outdoor Faucet Covers. Experts agree that foam faucet covers are the best option for a standard outdoor spigot. The foam sits flush to the outside of the house, keeping out freezing air ...

3. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   This is partly because ice forms on the outdoor unit's heat exchanger coil, which blocks air flow over the coil. To compensate for this, the heat pump system must temporarily switch back into the regular air conditioning mode to switch the outdoor evaporator coil back to the condenser coil, to heat up and defrost. Therefore, some heat pump ...

4. Heating, ventilation, and air conditioning - Wikipedia

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

   Air-side economizers also use outside air to condition spaces, but do so using fans, ducts, dampers, and control systems to introduce and distribute cool outdoor air when appropriate. An important component of natural ventilation is air change rate or air changes per hour : the hourly rate of ventilation divided by the volume of the space.

5. Free cooling - Wikipedia

   en.wikipedia.org/wiki/Free_cooling

   Free cooling is an economical method of using low external air temperatures to assist in chilling water, which can then be used for industrial processes, or air conditioning systems. The chilled water can either be used immediately or be stored for the short- or long-term. When outdoor temperatures are lower relative to indoor temperatures ...

6. Can cold weather make you sick? Your grandma wasn't entirely ...

   www.aol.com/cold-weather-sick-grandma-wasnt...

   Colder temperatures, especially in winter months, won’t cause a common cold. But they can weaken your immune system, and colder, drier air can help respiratory viruses thrive.

7. The 20 best Walmart deals this week: Bedding, beauty ... - AOL

   www.aol.com/lifestyle/the-20-best-walmart-deals...

   You'll even find an AC on sale for $144 — a good deal to scoop up before air conditioners become much more pricey in just a few short months. ... pad cover is an affordable way to add new life ...

8. Register (air and heating) - Wikipedia

   en.wikipedia.org/wiki/Register_(air_and_heating)

   During winter months, for example, an air conditioning register can be closed to prevent cold air from being pulled from the room. This allows the hot air to mix more completely with the cold air in the room, improving the efficiency of the HVAC system. [7] (The return should be efficient enough to draw off the cooler air.) [10] [11]

9. Dedicated outdoor air system - Wikipedia

   en.wikipedia.org/wiki/Dedicated_outdoor_air_system

   DOAS air handling unit with heat recovery wheel and passive dehumidification. A dedicated outdoor air system (DOAS) is a type of heating, ventilation and air-conditioning system that consists of two parallel systems: a dedicated system for delivering outdoor air ventilation that handles both the latent and sensible loads of conditioning the ventilation air, and a parallel system to handle the ...