ANW Contracting can design a custom Whole House System for your home. Two systems are offered, Zoned and Central. There are also other considerations such as lifestyle and level of system, Superior, Advanced, Basic, Sizing, and Affordability. These do not need to be done all at once.
As the name implies, a centrally installed system is a single fan system that is installed in a central location. Typically, this type of system is installed at the midpoint of a single-story home or at the top of a stairway in a two-story home. This system nicely ventilates the home, but lacks the individual room control offered by a zoned system.
With a multi-fan zoned system, the homeowner has maximum control over their ventilation and cooling needs. When sizing for a zoned system, the total CFM requirements are equal to the combined CFM of all zoned units, not just of each individual fan. When the entire house needs to be cooled, all zoned fans can be turned on simultaneously and allows individual rooms to be controlled as well as more specific airflow control.
Location and sizing are two other considerations to account for when sizing a whole house fan system.
Location: A good system should work great if one is located in a coastal region where the climate is cooler. Conversely, if one lives in a desert region with very hot days and cooler evenings, the best system would be more practical.
Ceiling Height: Size the system a bit larger to accommodate increases in air volume inside the home if ceilings are taller than 8 feet.
Once you determine the total amount of airflow needed, it is time to select between three levels of systems.
Superior System: This includes Zoned Cooling with multiple QuietCool Energy Saver or Stealth Pro Fans in the system.
Advanced System: This includes Zoned Cooling with multiple QuietCool Classic or Trident Pro Fans in the system.
Basic System: This includes Central Cooling with a single QuietCool Fan located centrally in the home. These fans are either the Classic or Professional Series.
We use a 2, 2.5, or 3 CFM (cubic feet per minute), per square foot of living space. Two CFM provides a good system, 2.5 CFM provides a better system, and 3 CFM provides the best system.
A QuietCool representative can help you calculate how much CFM you need in your home.
NOTE: One square foot of free flow air opening from your attic for every 750 CFM is recommended by the manufacturer.
You don’t have to do it all at once.
You can always add on.
Example 1:
A couple with two kids live in a single story house of 2700 to 3500 sq. ft. and sleep with the master bedroom door closed.
Superior System: When using a Stealth Pro 7.0 Whole House Fan centrally located, one Stealth Pro 2.2 fan in the master bedroom, a Stealth Pro 1.5 in each of the other bedrooms, and a solar roof fan mounted on the roof or a solar Attic Fan, open airflow expands to 14.68 sq. ft.
Advanced System: When using a Stealth Pro 6.0 Whole House Fan centrally located with one Stealth Pro 2.2 fan in the master bedroom, and a solar roof fan mounted on the roof, open airflow expands to 10.85 sq. ft.
Basic System: When using a Stealth Pro 6.0 Whole House Fan centrally located, open airflow expands to 7.85 sq. ft.
Example 2:
A couple lives alone in a 4-bedroom, two story, 2400 sq. ft. house and sleeps with the master bedroom closed.
Superior System: In this house, there is a Stealth Pro 6.0 whole house fan centrally located, one Stealth Pro 2.2 fan in the master bedroom, a Stealth Pro 1.5 fan in all bedrooms, and a solar roof mounted roof fan or solar Attic Fan, which expands airflow to 13.21 sq. ft.
Advanced System: In this house, there is a Stealth Pro 6.0 whole house fan centrally located, one Stealth Pro 2.2 fan in the master bedroom, and a solar roof mounted roof fan, which opens airflow to 10.85 sq. ft.
Basic System: In this house, there is Stealth Pro 5.5 whole house fan centrally located and it opens the airflow to 6.725 sq. ft.
