![]() ![]() I HIGHLY doubt you will ever get a good setup with that ductwork and the ERV will be unbalanced and not putting out a full 150 cfm. That is real world knowledge and from trying different methods and they would know. It can also be bad enough that you need a monitor and alarm or testing to make sure your setup works. It is important to know how many cfm you need and how long to run the fan etc etc. That is why I suggested you get some info from some local companies as to what they do. Where I am it settles in the basement and under the foundation and they put some pipes and a exhaust fan in and let it run. How to prevent the ERV circulating air from bypassing through the furnace and not flowing through the supply ducts? Can the ERV run without interfering with the furnace fan motor when there is a call for heating or cooling?Ģ. Additionally, just just exhausting the bad air will not be effective without bringing in fresh air to replace it.ġ. ![]() Just running the furnace fan motor is impractical due to the huge expense of running it around the clock and no one wants to hear or feel air blowing on them constantly. ![]() The air will not even be noticeable as it flows to the supply grills.Īn ERV is essential and appropriate for removing high radon levels because it has to run 24/7 and the ERV fan is designed for minimal current draw. The ERV will be pushing a maximum of about 150 CFM through the same ducts when the furnace fan is not running. The heating and cooling system pushes 2 tons of air which is about 800 CFM through 6 supply ducts. I'm not seeing the issue as to air balancing. ![]()
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