Most of my clients ask me about the big square box from the center section of the house’s upper floor ceiling behind a collection of self-closing louvers. It’s a whole house fan and it will either benefit homeowners or make living conditions worse.
* Preferably mild climates with cooler and less humid nights
* Apply it only when the temperature and humidity outside is much more favorable than the conditions indoors. In case your air conditioner system is operating in the daytime, and also the temperature outside drops lower (however the humidity remains to be high), don’t turn the http://tumblr.com. The vent will suck all the humid air into the air conditioned house
* The perfect time periods to utilize it might be, obviously, early morning and evening
Should you suffer from allergies, it may not be smart to bring all of the pollution into the house. Your window screens will stop a few of it, but whole house fans are very powerful and can make you sneeze more than ever.
1. Before you turn the fan on, open several windows and doors as you possibly can, close fireplace damper and / or glass door, and shut the furnace / water heater room doors (should they be louver type, it won’t matter). The suction of your whole house fan (a minimum of at the highest speed) is indeed great, that without open windows / doors, it will draw air externally through any possible openings like, for example, from the chimney. Should it be a fireplace chimney and you don’t remove the ashes… well, it’s likely to be a mess. When it is a hot water heater / furnace chimney, it may possibly blow off of the pilots.
2. When everything is ready, you are able to start up the whole house fan and usually within the next few seconds you ought to feel lots of exterior air flowing throughout the house. Unless…
3. This part is incredibly important as opening the windows and doors – both have to be balanced to operate properly so that you can really enjoy the whole house fan operation. The air drawn with the whole house fan should be discharged with the attic vents for the exterior. Otherwise, pressure created in the attic area may cause the environment that was just pulled from your house to come back with dust and insulation particles through any possible gaps inside the attic wh0le and the whole house fan itself.
Regular attic ventilation is probably not enough to support the Clicking Here operation; you might need considerably more to handle all that extra volume of air to the exterior. As well as the formula to calculate the sq footage from the attic vents expected to discharge that air is very simple. You just need the proportions of your rooms:
Example: your ceilings are 8′ high and you will have four 10′ x 14′ rooms, one 15′ x 17′ room, plus a 10′ x 3′ hallway (this is only a sample, calculate every one of the rooms in your home you think ought to be covered)
10’x14’x8′ = 1120×4 = 4480
15’x17’x8′ = 2040
10’x3′ = 30
Total – 6550 cubic feet
Now you must to divide 6550 by 750, which equals 8.73 sq feet – this is actually the portion of the required attic vents (all of them combined – soffit, ridge, gable, etc.)
4. In case the house you’re stepping into offers the whole house fan already installed, lets hope that this was properly sized up because of its purpose (there may be a tag about the unit itself), which is to replace your residence air within just a few minutes.
5. If you’re the main one installing the whole house fan, consider 3 or 4 minutes as being an optimal time to the house air exchange. To accomplish this, you’d have to divide your house total air volume (6550 cubic feet from my sample) by 3 or 4 minutes. Which will provide us with 1810 CFM / 1357.5 CFM (Cubic Feet each and every minute).
6. Yet another essential thing: louvers in the website here are not air tight and also have no insulation applied on their surface; they leak air between the house and attic. I might highly recommend installing a whole house fan cover in attic area to stop air drafts in the cold season – don’t forget to take out it before you use the fan again.
Whole house fans are noisy and a lot of people never utilize them, however they might benefit your wallet when you apply the suggestions above. You can find currently other types of house ventilation systems available: they are more expensive (2 – three times) but very quiet, better, and offer air flow for longer periods of time.