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2. No, You Don't Need to Clean Your Air Ducts Every Year ... - AOL

   www.aol.com/no-dont-clean-air-ducts-110500245.html

   "[Since] HVAC systems push air through the air ducts that run throughout the home in walls, ceilings, and floors [the] movement of air through these HVAC/furnace systems has the potential to ...

3. Vapor barrier - Wikipedia

   en.wikipedia.org/wiki/Vapor_barrier

   The function of a vapor barrier is to retard the migration of water vapor. A vapor barrier is not typically intended to retard the migration of air. This is the function of air barriers. [8] Air is mixed with water vapor. When air moves from location to location due to an air pressure difference, the vapor moves with it.

4. Stack effect - Wikipedia

   en.wikipedia.org/wiki/Stack_effect

   The net negative pressure on lower floors can induce outdoor air to infiltrate the building through doors, windows, or ductwork without backdraft dampers. Warm air will attempt to exfiltrate the building envelope through floors above the neutral axis. Mechanical refrigeration equipment provides sensible and latent cooling during summer months.

5. Indoor mold - Wikipedia

   en.wikipedia.org/wiki/Indoor_mold

   Residential mold may be prevented and controlled by cleaning and repairing rain gutters, to prevent moisture seepage into the home; keeping air-conditioning drip pans clean and drainage lines clear; monitoring indoor humidity; drying areas of moisture or condensation and removing their sources; ensuring that there is adequate ventilation by ...

6. 7 Decorating Mistakes Designers Want You to STOP in Small ...

   www.aol.com/lifestyle/7-decorating-mistakes...

   "Layering lighting is key — use a combination of overhead, floor and table lamps to brighten the space. Wall-mounted fixtures are a great way to save floor space, and mirrors can be used to ...

7. Crankcase heater - Wikipedia

   en.wikipedia.org/wiki/Crankcase_heater

   Some air conditioning equipment manufacturers install crankcase heaters either in the compressor (insertion type), or mount them externally around the base of the compressor (bellyband type). The two wires of the heater are wired directly to the input side of the contact from the main power supply, and power is always supplied to the heater.