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2. Stack effect - Wikipedia

   en.wikipedia.org/wiki/Stack_effect

   The rising warm air reduces the pressure in the base of the building, drawing cold air in through either open doors, windows, or other openings and leakage. During the cooling season, the stack effect is reversed, but is typically weaker due to lower temperature differences.

3. Infiltration (HVAC) - Wikipedia

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

   Smoke candles and blower-door tests can help identify less-than-obvious leaks. The Weatherization article describes methods for energy savings further. If infiltration is reduced below 0.35 ACH, it is recommended that mechanical ventilation (typically an exhaust fan or heat recovery ventilation ) be implemented.

4. Tap (valve) - Wikipedia

   en.wikipedia.org/wiki/Tap_(valve)

   There is little resistance to flow when the tap is fully open, but this type of tap rarely gives a perfect seal when closed. In the UK this type of tap normally has a wheel-shaped handle rather than a crutch or capstan handle. Cone valves or ball valves are another alternative. These are commonly found as the service shut-off valves in more ...

5. Today's Wordle Hint, Answer for #1272 on Thursday, December ...

   www.aol.com/todays-wordle-hint-answer-1272...

   If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1272 ahead. Let's start with a few hints.

6. Heating, ventilation, and air conditioning - Wikipedia

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

   Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building. The heat can be transferred by convection, conduction, or radiation. Space heaters are used to heat single rooms and only consist of a single unit.

7. Nick Lachey Opens Up About 'Scars' from Divorce with ... - AOL

   www.aol.com/lifestyle/nick-lachey-opens-scars...

   Nick Lachey is opening up about past hurts.. Speaking to a contestant on season three of The Ultimatum, released on Netflix on Wednesday, Dec. 4, the host, 51, said he understands the pain of ...