Attic Eave Fan

The attic fan kept my house cooler by 8f compared to pre fan installation days.

Attic eave fan.

During the day any cooler air brought in by the fan will be heated up immediately by the surrounding structure. A hot ceiling tells you that the attic is acting like a solar oven raising your cooling bills and cooking the shingles. Thick ridges of ice on your eaves in winter are a sign of poor attic ventilation. Most fans cannot keep up.

Intake vents located at the lowest part of the roof under the eaves allow cool. Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool. 1250 cfm weathered wood galvanized steel electric powered attic fan with thermostat controlled the master flow erv5 power roof vent is a the master flow erv5 power roof vent is a great overall investment in attic ventilation. During workdays would leave air conditioner off when leaving in the morning.

However the utility of attic ventilation fans is actually quite a controversial topic. Warm air that escapes rooms below gets trapped in the attic. Temp 84f at 5pm. Temp 92 f at 5pm.

Good insulation reduces fan effectiveness. Master flow 1450 cfm silver electric powered gable mount electric attic fan model egv5smt view the master flow gable vents 118 00 118 00. Iliving iliving automatic gable mount attic ventilator fan with adjustable thermostat 3 10 amp. The downside of attic ventilation fans.

Snow melts and the water refreezes on the cold eaves creating ice dams. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic. 1150 cfm galvanized steel electric powered attic fan with adjustable thermostat model gf 14 429 00 429 00. After attic fan installation ac still off during day.

Attic fan ventilation attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. This was observed on numerous days following the installation. When passive methods aren t sufficient an electric fan installed at a soffit vent draws additional outside air into the attic to augment the chimney effect.