Heating, Air Conditioning, Fridge, HVAC/Air ducts flexible

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Question
Duct
Duct  
I recently had my entire air duct and air handler( I think that's what it's called)  after  a couple of weeks I went up to the attic and notice one of the flexible ducts just going into attic floor , but the end I was looking at was not connected to anything!
Is this normal?

Answer
Eli,

Run your fan at your thermostat ,put fan from auto to ON then go up in attic, see if your sucking in attic air into your fan section somewhere, your suppose to have a sealed dedicated flex duct for your return, If your flex duct goes into your attic floor you would need to see approximately where your return grille is, also put your hand on the return grille ,you should feel air being sucked into the duct. The duct may just be a extra piece and it looks like the other end goes to the attic floor, try pulling on it to see if it actually hooked up or just a spare piece they forgot to remove

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40+ years diversified experience.An HVAC/Refrigeration Self Employed Contractor since 1986. NATE Certifield. Answer questions pertaining to Residential and Commercial Air Conditioning , Warm Air Heating, Heat Pump systems.Mechanical and Electrical troubleshooting of these systems.Be as detailed as possible when describing problem.Packaged unit or split systems.No appliance questions.

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Installation and Troubleshooting, Mechanical and Electrical, in following areas, Refrigeration ( Walk In and Reach In Coolers and Freezers ) Commercial Roof Top and Packaged Heating/Cooling ( Natural Gas,Propane, Electric, and Heat Pumps ) Computer Room Air Conditoning Systems,Commercial Residential Packaged and Split Systems Air Conditoning and Heat Pumps.Warm Air Oil , Natural and Propane Gas Heating systems.

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Graduated from Private Technical School in 1975. An HVAC/Refrigeration Contractor . Have Unlimited Heating/Piping and Cooling Contractor License.Limited Sheetmetal Contractors License.NATE Certifield. York Certifield Master Heat Pump Technician 1986. Served 33 years combination Active Duty Air Force , Air Force Reserves and Air National Guard in the HVAC/Refrigeration Shop/Mechanical Shop. Troubleshooting/Installing HVAC/Refrigeration Equiptment Worldwide. Retiring in 2003 as a Senior NCO ,and a Mechanical Superintendent.

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