Improving Airflow to Problem Rooms

Posted: Oct 22, 2008 | Comments: 2 | Views: 776 | Bookmark and Share

There are many ways to to improve the airflow to a problem room. We will cover a few of them in this article. Keep in mind its always best to allow an HVAC technician to come and evaluate your system but dont feel obligated to take their advise at face value. Alot of times they will tell you to upgrage your existing system when in fact you can get by with some very low cost alternatives.

 

1.  If you have rooms that have adequate pressure try dampening those rooms a little to help increase the flow into the other rooms. This in effect is a way of balancing the pressure in your system overall. By dampening this means closing off the register slightly.

 

2.  Evaluate your duct system to see where your points of restriction may be located. Air flows in the path of least restriction. It will find the path of least resistance so any restriction to your airflow will cause negative effects at the register. If your duct has alot of bends and alot of length this could be the source of your problem. Try installing an Inline Duct Fan at a point of restriction like a bend in the duct line.

 

3.  Have your Ducts cleaned. This serves more benefits than just posistive airflow. It also removes allergens and other health hazards that you can really do without.

 

4. Sometimes contractors have fog in the brain when designing the best way to layout your duct system. In addition to the HVAC study you can also have a contractor evaluate your existing layout and make recommendations on ways to improve your airflow by changing some paths or adding new ones.

 

I hope this short article has helped. I will continue to add more articles on simple home improvement ideas in the future!

(ArticlesBase SC #612820)

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    1. Chester April 06, 2009
    I have a three level house with central heating/air pump.
    The bottom floor is half in ground so it tends to be cooler.
    The top floor faces south and gets a lot of sun so is usually warmer.
    The furnace is in the bottom level so all the air duct runs are shorter than the ones that have to wind their way all the way up to the top. In winter the thermostat which is upstairs shuts down before the bottom level is warm and in summer it is opposite and the bottom level is too cold because the thermostat is trying to cool the upper floor.
    My thought is that we could shut down the duct registers on the bottom level to try and balance the heat/cooling but someone said that would cause a pressure problem for the heat pump.
    I don't understand why just redirecting where the heat/cooling is going should cause any problems.
    Maybe besides the furnace fan working a bit harder.
    Can you shed some light on this topic for me?
    Thank you.
    0
    2. Bill April 06, 2009
    I will try and give you some ideas. Closing off the registers is always the first line of defense that I recommend. Im not saying close them off all together but by doing this it serves as a means of "Balancing" your system. You can buy automatic dampening systems that will do it for you but as you may guess it can get costly. You can also purchase inline duct fans which are very low cost and low energy to help push air to problems areas. These units mount inline with your existing ductline and can be wired to turn on by any means you can think of (Thermostat,AirPressure Switch,Directly wired to the main blower Etc Etc...) I think your on the right track by dampening and I wouldn't really be concerned about the pump. People Like to put very restrictive Air filters in the systems without thinking about how it affects the units but the more efficient an air filter is the more "Restrictive" it is and the harder your equipment has to work. Maybe putting a different filter in the system will help with your airflow as well. Please let me know if I can be of any further assistance and if your looking at line fans I can recommend a great site :) www.airboosterfans.com/duct-fan.html
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