Frequently Asked Questions - Attic Fans, Whole House Ventilation and Air Quality

  • How do I calculate what size ventilator I need for my attic?

  • How much free area air intake do I need in the attic for the ventilator to work properly?

  • How do I calculate the existing free air in my attic?

  • What if I do not have enough free air area in my attic?

  • At what temperature should the thermostat of the Attic Ventilator be set?

  • Can I paint the dome on my attic ventilator? If so, what kind of paint do I use?

  • Can a variable speed control switch be used with an attic ventilator?

  • Can a gable ventilator be installed on a roof?

  • Can an attic ventilator be installed on a vertical surface?

  • Can an attic ventilator be installed on a flat roof?

  • Can I install a dehumidistat on an attic ventilator?

  • Why would I need an ERV or an HRV for my home?

  • Would I be able to improve my air quality with just a ventilator?

  • Why is an HRV or ERV system better than a regular ventilator?

  • Must I also install bath fans if I choose to install an IAQ system?

  • Can I ventilate my bath fans through an IAQ system's ductwork?

  • How much fresh air is needed in a home?

  • Who installs IAQ equipment?

  • What types of controls are available to operate the IAQ equipment?

  • Where is an ERV or HRV installed?

  • Can I use a BROAN-NuTone residential ERV or HRV (100 or 200) to ventilate my pool or spa areas?

  • Can I wire my IAQ equipment to my furnace so it only runs when my furnace is running?

  • Why must I have a balanced ventilation system?

  • What type of ducting does the equipment require?

  • What is the difference between an HRV and an ERV? Which should I choose for my home?