air register forum

How much clearance does my HVAC ''intake'' register need

Fuzznuts , Saturday, 14th of August 2010 08:26:10 PM

I am installing a built-in entertainment center near a ceiling mounted HVAC 
Fuzznuts
intake register.The entertainment center unit will be built up to within 12 
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inches of the ceiling mounted register (with no obstructions on the left or 
Joined: Sunday, 9th of May 2010, 19:30:28
right).I am concerned that l might be restricting air flow and ruin my HVAC 
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unit (like I've been told a dirty air filter can cause a similar 
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problem).Any idea what the minimum clearance requirements are for air 
intake space?Thanks!
 
 
 
 
 
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Nemo , Sunday, 15th of August 2010 08:44:38 AM

light a cigarette,turn on the furnace/ air conditioner fan and  
Nemo
hold the cig about where the top of the ent. center will end up. if the  
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smoke gets lazily sucked into the return, no big deal. if the return acts  
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like it wants to suck in you hand, then you should get a shorter ent.  
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center or have another return added.  
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Possum, hvac guy  
 
 
 
 
 
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Cheeks , Monday, 16th of August 2010 11:31:39 AM

You should not have any problems.  
Cheeks
 
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Cheeky monkey , Tuesday, 17th of August 2010 12:30:42 PM

The return register if ceiling mounted dosent require much  
Cheeky monkey
clearance. 12'' in should be ok. If it were a wall mounted return a min of  
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36 in is usually required for propoer air intake flow. Like you cant put a  
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grandfather clock infront of it.  
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Good Luck.  
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