"Ask Adam" Adam has been in the HVAC industry for over 40 years. He has been involved in all aspects of the business from service to sales. His main interest is in customer comfort. Does Your House Still Have An Attic Fan? Many homes today still have a fan in the attic called a Power Attic Ventilator or PAV. Years ago the thinking was that a fan in the attic would cool the attic and reduce the running time of the A/C unit. Modern building science has proven that an attic fan is more detrimental to your overall comfort than it is beneficial. Most attic floors are very leaky with many penetrations (can lights, plumbing stacks, conduit, etc.). Therefore the air that is pulled from the attic is mostly from the inside of your home. This air has to be made up by bringing in unwanted hot air from outside (this process is called infiltration). This will now introduce particulates, contaminants and humidity into the house. This explains why many homes are always dusty even though the doors and windows are closed while the A/C is running. Attic ventilation is a code requirement but is more of a winter concern due to humidity escaping from the home. Passive ventilation is more than adequate to vent the attic and prevent any building degradation. If you have any HVAC questions, call 800-350-HVAC (4822) Bella says: or email adam@officialhvac.com Does heat, humidity and high energy costs have you howling? Help is here! PRESIDENT D Adam Kern, Owner Official Heating & Cooling Rebates and incentives on select new high efficiency A/C & furnaces. Combination discounts available. Call today! OFFICIAL Heating & Cooling 800-350-HVAC (4822) 5 Time BBB Honoree A+ officialhvac.com SALE! NATE FACTORY AUTHORIZED DEALER Carrier " Ask Adam " Adam has been in the HVAC industry for over 40 years . He has been involved in all aspects of the business from service to sales . His main interest is in customer comfort . Does Your House Still Have An Attic Fan ? Many homes today still have a fan in the attic called a Power Attic Ventilator or PAV . Years ago the thinking was that a fan in the attic would cool the attic and reduce the running time of the A / C unit . Modern building science has proven that an attic fan is more detrimental to your overall comfort than it is beneficial . Most attic floors are very leaky with many penetrations ( can lights , plumbing stacks , conduit , etc. ) . Therefore the air that is pulled from the attic is mostly from the inside of your home . This air has to be made up by bringing in unwanted hot air from outside ( this process is called infiltration ) . This will now introduce particulates , contaminants and humidity into the house . This explains why many homes are always dusty even though the doors and windows are closed while the A / C is running . Attic ventilation is a code requirement but is more of a winter concern due to humidity escaping from the home . Passive ventilation is more than adequate to vent the attic and prevent any building degradation . If you have any HVAC questions , call 800-350 - HVAC ( 4822 ) Bella says : or email adam@officialhvac.com Does heat , humidity and high energy costs have you howling ? Help is here ! PRESIDENT D Adam Kern , Owner Official Heating & Cooling Rebates and incentives on select new high efficiency A / C & furnaces . Combination discounts available . Call today ! OFFICIAL Heating & Cooling 800-350 - HVAC ( 4822 ) 5 Time BBB Honoree A + officialhvac.com SALE ! NATE FACTORY AUTHORIZED DEALER Carrier