How You Can Do The Garbage Bag Airflow Test
Poor air flow is one of the most common problems with heating and cooling equipment. This problem makes your heating and cooling equipment work like inefficient outdated models and this can waste a lot of your momey. The two most common reasons for poor air flow: inadequate duct sizing and a dirty return air filter.
Inadequate Duct Sizing
Inadequate duct sizing is usually caused by a poor installation by a contractor who may not have the qualifications to perform proper sizing. It is a common problem that a homeowner may battle for years to come and could cost a lot of money over the life of the device. It is extremely crucial that you get references before selecting a contractor.
A Dirty Return Air Filter
A dirty return air filter is the easiest problem to fix. Simply change your return air conditioning filter more frequently or use a filter that will not restrict air flow. This simple change can lead to huge savings.
How You Can Perform the Garbage Bag Air flow Test
Garbage bag airflow test is a simple and inexpensive way to determine the airflow of your furnace registers, bathroom exhaust fan or clothes dryer exhaust. It's a vital test to pinpoint the reason why your furnace isn't providing sufficient warm air in your room. This test is also useful if you want to see whether your newly purchased exhaust is working properly. The same goes when you're having major renovations in your home that call for a change in your heating or cooling systems. It won't cost you a lot of money as it only requires a garbage bag. This test isn't a precise measurement of the airflow but it is better than not conducting any test at all.
Here's how to do the garbage bag airflow test:
1. Secure the mouth of the garbage bag by using a tape right into a bent coat hanger or a cardboard to keep it open.
2. Be sure to deflate the bag by crushing it flat.
3. Place the open part of the bag (mouth) over the furnace register or exhaust hood.
4. Using a stopwatch or any gadget track the number of seconds it takes for the bag to completely inflate.
If you're utilizing a small garbage bag that measures 66 x 91 cm, you can プラダ 店舗 use the data below to determine the airflow:
Inflation time = Airflow
*2 seconds = 35L/s (75 cfm)
*4 seconds = 20 L/s (40 cfm)
*10 seconds = 10 L/s (20 cfm)
However, if you're using a bigger garbage bag that measures 79 x 119 cm, make use of this data:
Inflation time = Airlfow
*2 seconds = 100 L/s (210 cfm)
*4 seconds = 50 L/s (105 cfm)
*6 seconds = 35 L/s (75 cfm)
*10 seconds = 20 L/s (40 cfm)
If you have measured an airflow that is less than 10 L/s, then your furnace provides you with only a small amount of heat. If this is the case you may need to do further investigation to find out why the heat is not going through.
Another test that is associated with this garbage bag airflow test is the deflation test. This is not as accurate as the inflation プラダ test described above but doing it won't cost you anything. Deflation test measures the amount of air going プラダ バッグ メンズ out. This is done by holding the inflated garbage bag over the exhaust grill while counting the number of seconds it takes for the bag to be fully deflated. However, this test isn't a reliable source to determine low airflow. The amount of air that goes out can be determined by simply adding a second on the inflation time. Thus, 35 L/s would take 3 seconds, 20 L/s for 5 seconds, and so on.