Content

• Steps
• Tips
• Warnings

Using general ventilation will reduce heating and cooling costs, reduce allergens, and freshen up the atmosphere in your home. General ventilation lets hot air out and cold air in through the vents. However, this system is not very effective if the outside temperature and humidity are much higher than in the house. The newer models feature temperature and humidity control sensors to enhance your comfort.

Steps

1. 1 Determine how much ventilation is needed for your particular home. Calculate the area of ​​the house. Most manufacturers install some kind of ventilation based on the area of ​​the house. Some of them argue that ventilation must be done every 3-4 minutes to fully ventilate the house.
   • Many ventilation systems have a m³ / h rate (cubic meters per hour). The higher this indicator, the more air ventilation can pass. Simply divide the area of ​​the house by the m³ / h of your ventilation and the result is the ventilation frequency time.
   • Please note that the higher the m³ / h, the larger the dimensions and / or the air circulation rate. As a result, they can be noisier than ventilation systems with a low m³ / h. Noise levels can also affect the placement of ventilation in a home. In a house with a square area of ​​185m2 and a ceiling height of 2.5m, full ventilation will take place in 8 minutes with a ventilation capacity of 60m³ / h (with open windows in all rooms). And ventilation with a capacity of 120m³ / h would have done it in 4 minutes!
   • This is how we arrived at these numbers. Ventilation with a capacity of 60m³ / h passes 60m³ of air per minute. In a house with a square area of ​​185m2 and a ceiling height of 2.5m, the spatial area is 460m3 (185m2 x 2.5m = 460m3). We divide 460 m3 of space by ventilation capacity - 60m³ per minute and get the result in 8 minutes (460m3 / 60m³ = 8 minutes).
2. 2 Make sure there is 1.5 times more space on the ceiling than what you have allocated for ventilation. Air from general ventilation needs to be distributed somewhere.
   • Example: a 0.6 X 0.6 ventilation connector equals an area of ​​3.6 m2. Hence, 3.6m2 X 1.5 = 5.4m2. Take a look at your attic. If you have 2 ventilation holes of 0.6 m2 each, together their area is no more than 1.5 m2. There will most likely be gratings above them, so subtract 20-30% of 1.5m2 and you will get 1m2. If you don't have enough space, then complete it.
   • There are several ways to provide sufficient ventilation space, you can place it on a ridge or under a roof overhang. Also take into account the space for all fastenings and barriers (grates, nets, etc.). In general, 1m2 of attic for living quarters will be enough.
   • They say that only in large houses more than one ventilation is installed, where all the windows are open and the air is unsatisfactory. Of course, closed windows increase the flow by those that remain open. Read more below.
3. 3 Determine where the best air intake is (windows or doors). Install grates on them. Do not leave windows and doors without bars. The fan should not be located immediately outside the door, but in the corridor.
4. 4 Close the smoke damper on the fireplace. If you leave it open, then fumes and soot will flow into the house from the smoker.
5. 5 Only open windows in rooms where you are and have bars. A fan with a capacity of 60m3 / h will pass 60m3 of air through it. The fan is limited only by its capacity - 60m3 / h and the number of openings for air entering the house (windows) and outward (ridge fans, etc.). The operation of a 60m3 fan is influenced only by the number of windows, if 10 windows are open instead of two or three, the air flow will be much stronger.
   • Let's calculate: 60m3 divided by 10 windows = 6m3 of air for each window. Now let's leave only 4 windows. Divide 60m3 into 4 windows = 15m3 for each window (if the windows are large enough)! This is a big difference. It is this flow of air that can cool you.
   • The movement of air in an empty room for several hours will not make it cooler as if you had just walked in and opened the windows. You can save a lot if you turn on the fan at low speed with 2-3 open windows, instead of turning it on at full power with a dozen open windows.
   • Do not leave the fan on when no one is at home - this is a waste of electricity. The fan will immediately cool you down the moment you turn it on. You will not get this "instant" effect from an air conditioner.
   • Increase your savings: Through windows open on the shaded side of the house, much cooler air will enter than through those on the sunny side.
6. 6 Consider additional fans in your attic. When hot air remains in the attic, it can seep back into the house and thus reduce the cooling effect.
   • Turbofans do a great job, but strong winds can cause a downward flow of air and create static pressure that will prevent the fan from blowing out.
   • Ventilation that is placed under the eaves is inexpensive and cheap to install, but very effective. If you have cornices in your house, install as many ventilation as possible under them, they will ensure good air circulation.This is the best way to exchange air, because the effect is twofold: the first is to cool the hot attic, the second, with ventilation under the eaves, the air flow goes along and across the attic, which ensures cross ventilation of the entire attic. It is much easier than installing additional ventilation on the roof ridge or electric ventilation.
7. 7 Protect yourself. Check your system. Many of them have a National Electrical Code or something like that. Check out this code.
   • If you want to do this yourself, then be sure to install a switch in the attic. You can also keep a switch close at hand for convenience if you need to turn on the ventilation or adjust the power.

Tips

• General ventilation will also remove moisture and heat from your attic, which will extend the life of your roof.
• You will spend a penny on general ventilation, the cost depends on the size of the motor. This is a very economical air conditioning.
• Using ventilation in a non-residential building is a waste of money and energy.
• The grates require constant cleaning. They act as air purifiers. Therefore, they need to be cleaned at least once a year. Do not forget the grates in the attic, through which air will escape. They will also serve as filters for anything that will not pass through them, and over time will block the flow of air to the outside.
• Place insect and dust bars on windows.
• Only keep windows open in the room where you are. Set the fan to the lowest speed to save your budget.
• Attic ventilation was popular in the hot southern United States even before air conditioning was introduced. With the help of one powerful ventilation, hot air from the house was raised to the attic, where it was dispersed by fans. They also cooled the attic. Air will flow in through the open windows. Ventilation noise will be in the attic. Noise can be avoided by leaving the steps to the attic open to allow air to circulate through the vents rather than blocking it in the path. Normal ventilation can be placed in the fireplace and covered with a cardboard cover. The air from the house will come out through

Warnings

• For people with asthma or allergies, it is better not to use general ventilation in the spring and during the flowering of plants. Outside air supply can cause an allergic attack. Consult your doctor. There are special filters that can prevent this situation. Check the condition of your water heater, if fumes come from the chimney through the ventilation, then open more windows.
• You will have to change filters more often due to the increase in the amount of dust, pollen, etc.