DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > extending the high efficancy intake and outtake?

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Old 04-02-2014, 04:48 PM  
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You could put a UV emitter on one pipe and a detector on the other one. If the path of light is blocked you've got a problem. You might find an online kit that does this for $30 or so.

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Old 04-02-2014, 09:02 PM  
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just a little shed roof; no sides, no front.

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