What is a whole house fan?
In situations where you need to lower the temperature of the air inside your house, the whole house fan is ideal. The device pulls in cool air from outside using open windows as inlets. The hot air then exits the building via the attic and vents. Of course, for this device to work, the air outside has to be colder than the gases inside. Consequently, you should be able to turn the device off when this is not the case. Also, the most common installations involve putting the device in the attic. Unlike its compact ‘brothers’, evaporative coolers or any cooling fan for that matter, these models require careful planning before buy
Benefits of whole house fans
Whole house fans as well have a few advantages over other types of ACs. The most obvious, of course, is the money you save due to reduced energy consumption. Some of these devices don’t use up a lot of electricity, and you always have the option of turning them off when you are not around or when you don’t need them. The majority of them are very quiet despite being quick at their job. Also, most people find that with instructions, the installation process becomes a breeze even without involving professionals.
Features to consider when choosing a whole house fan
You will as well need to have in-depth knowledge of the characteristics common to whole house attic fans. As a result of possessing this knowledge, you will understand what each device can do for you and hence evaluate whether the purchase is worth it or not.
The different types of whole house fans are ducted, window-mounted, rooftop-mounted, and lastly, ceiling mounted.
They all have the same function but may be appealing to different markets. A window fan
, of course, is installed on a window sill. Also, the names of the other types of whole house fans should give you the general idea of the expected installation spots.
Houses come in different sizes. As such, it would make little sense to buy QA-Deluxe 4800(W) , which covers 3400 sq. ft. while your living space is only 1400 sq. ft. That extra coverage area is, as a result, wasted on you. Conversely, you can’t install the QuietCool QC ES-3100 device in a 3000 sq. ft. house unless you plan to buy two units.
Dimensions and weight
You also have to be sure that the device will fit in its designated installation area. This is why the dimensions and weight are essential.
The airflow will more often than not affect the coverage of the device and its efficiency in replacing the hot air inside the house with the cool air from outside.
Airflow is depicted in CFM, which is an acronym for cubic feet per minute.
You can, therefore, tell the CFM appropriate for the rooms and house overall if you know their size, and thus the device you buy should be dependent on house size figures.
The number of blades
Three or two are the golden numbers where fan blades are concerned. This is because fewer blades mean the fan will rotate quicker, and as a result, air circulated in the home will be more.
You will note a significant dip in power utility bills if you start using the whole house fan over traditional ACs. However, the different models of whole house fans also have different power consumption needs. This is especially seen in the QA-Deluxe 4800(W) that uses 662 W versus the Air King 9166F that uses about a fifth of that power.
A difference in noise levels is to be expected from different devices. However, remember that you are going to install the equipment inside the house, and it is inconvenient for the noise levels to be up. It would be especially bothersome if you were trying to sleep, but the noise from the fan kept you awake. As a rule, the quieter the fan, the better.
The most crucial component is the fan. As such, metal fan blades are better since they last better. Other parts of the device should be just as durable to ensure they last longer and make the purchase worthwhile.
The warranty serves an essential purpose in ensuring you don’t need to spend more money on a whole house fan in case it gets damaged or comes with defects. As such, the more extended the warranty and the more inclusive it is of all components, the better. Other features include a timer that stops the device working after a while, so you don’t have to shut it down manually. Shutters also come into play when regulating airflow. Remote controls may also help operate the tool. While most of these features are not necessary for the basic functions of the device, they provide an extra incentive for you to go out of your way and buy the device.