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Why a condensate drain pipe above front door?
That pipe is there to let you know there is a problem with your a/c unit in the attic.
When the primary condensate backs up, or the unit overflows for any other reason, there is an auxiliary drain pan under the unit to catch that overflow, and that drain line is draining to where you will see it and call the a/c contractor.
Can a dryer vent be installed downward?
Yep.
Can condensate pump discharge into waste line?
Yes, but you should use a P-trap first.
Can electricity cause a loud bang in an interior wall?
No, but duct can.
How far do you install a home thermostat from cold air return?
3'.
How to tell if your ac ductwork needs to be sealed?
If it's not already sealed, then it should be sealed.
What is the recommended gauge material for laundry exhaust duct?
30 gauges.
When do I need a fresh air register in a bathroom?
Never heard of it.
What a material needed for adding a flex duct to a a/c return?
Tap-in collar.
How to put ductwork together
You can learn it on this page.
How to fasten a duct to a toe kick
You can buy a chapter from my Kitchen Remodeling Edition and find it out for yourself.
Why is airflow suddenly bad after furnace replacement?
Ask your installer, he should know it better and send me some pictures so I can publish them on the Wall of Shame page.
Why do I need to replace my furnace plenum?
I have no f--g idea!
Does furnace produce any noise?
Of course it does.
Why am I having too much humidity from a/c unit inside home?
This one is a complicated issue, but as a first remedy you may try to reduce your A/C blower speed.
What happens when I use a smaller than recommended duct for my microwave exhaust?
It won't remove as much contaminated air as designed, it will be noisier and it may shorten the blower's lifetime.
Why does basement have to be so cold?
This is and interesting question - got the answer?
Do I need to insulate my cold air return ductwork?
Probable not.
How to secure PVC on high efficiency furnace.
You can use ¾" clamps.
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