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  2. 4 DIY Air Conditioners That Actually Work - AOL

    www.aol.com/4-diy-air-conditioners-actually...

    A styrofoam cooler makes a great DIY air conditioning box, as the holes are easy to cut and the coolers are cheap to buy. This video demonstrates how cool the air being circulated can be.

  3. 5 Signs That It's Time to Turn on the Heat for Winter ... - AOL

    www.aol.com/lifestyle/5-signs-time-turn-heat...

    "A trained HVAC or indoor air quality specialist can design a system tailored to your specific needs, ensuring optimal humidity levels." Related: The 3 Best Humidifiers, Tested by BHG Read the ...

  4. Air handler - Wikipedia

    en.wikipedia.org/wiki/Air_handler

    An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system. [1] An air handler is usually a large metal box containing a blower, furnace or A/C elements, filter racks or chambers, sound attenuators, and dampers. [2]

  5. Heating, ventilation, and air conditioning - Wikipedia

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

    Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality .

  6. Heat pump and refrigeration cycle - Wikipedia

    en.wikipedia.org/wiki/Heat_pump_and...

    Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [2]

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. 10 Key Signs You’re Ready To Buy Your First Home - AOL

    www.aol.com/finance/10-key-signs-ready-buy...

    “In most cases, especially if one is not purchasing a new-construction home, there are maintenance things that will come up: rises in HOA dues, gardening and landscaping, structural repairs and ...

  9. Turning vanes (HVAC) - Wikipedia

    en.wikipedia.org/wiki/Turning_vanes_(HVAC)

    HVAC turning vanes are sheet metal devices inside of mechanical ductwork used to smoothly direct air inside a duct where there is a change in direction, by reducing resistance and turbulence. See also