Mechanical Pressure

(0:54) Untreated outdoor air leaks into— infiltrates—the building when indoor pressure is less than the pressure outside. Control strategies typically strive to limit or eliminate infiltration as a means of minimizing HVAC loads and related operating costs. Conditioned indoor air leaks out of— exfiltrates from—the building when the pressure inside is greater than

2016-11-10T07:32:33+00:00 Animated Details, Media|

Roof Ice Dam

(0:47) An Ice Dam is a hump of ice that forms at the edge of a roof under certain wintertime conditions. An ice dam can damage both your roof and the inside of your home. An ice dam forms when the roof over the attic gets warm enough to melt the underside of

2016-11-10T07:32:33+00:00 Animated Details, Media|

Attic Convection

Natural convection is responsible for initiating the upward flow of air through an attic. This air current can be maintained to aid in continuous circulation of air through the attic if intake vents placed low in the attic make colder air available to replace the heated air exhausted through vents placed high in

2016-11-10T07:32:33+00:00 Animated Details, Media|

Convection in a House

Convection is another means for the heat from your walls and ceiling to reach you. Hot air naturally rises, carrying heat away from your walls and causing it to circulate throughout your home. As the hot air circulates past your skin (and you breathe it in), it warms you.

2016-11-10T07:32:33+00:00 Animated Details, Media|

Conduction in a House

Conduction is heat traveling through a solid material. On hot days, heat is conducted into your home through the roof, walls, and windows. Heat-reflecting roofs, insulation, and energy efficient windows will help to reduce that heat conduction.

2016-11-10T07:32:33+00:00 Animated Details, Media|

Convection Wall Loop (Summer)

0:18  Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises.

2016-11-10T07:32:33+00:00 Animated Details, Media|

Convection Wall Loop (Winter)

0:18  Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises.

2016-11-10T07:32:33+00:00 Animated Details, Media|
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