Disconnected cool air supply duct hidden in crawl area.
Duct disconnected in attic.
Bathroom exhaust ducts disconnected in attic.
Up against the deck may be the worst place in the attic to.
Using a duct sealant called mastic is the professionals choice.
The unconditioned space also houses his hvac system.
All vent ducts terminated to the exterior of the property and were properly installed and supported.
Drill knife flashlight and any other useful items.
Air sealing your ducts is cheap and easy and it save s a lot of money.
Well in the comments dave roberts a senior engineer at the national renewable energy lab nrel wrote about a paper he co authored last year and included a link to it.
If you forget something you ll have to crawl back out to get it.
Doing so would fill your attic with.
Ted has more than a few cobwebs in his attic.
Or excess flex duct.
Access the duct work.
Learn how to seal yo.
This is a much more common scenario as most homes with forced air systems locate the supply ducts in the crawl space and return ducts in the attic.
If the duct work is located in a full basement or attic the work is a lot simpler than if in a small crawl space.
In existing homes with vented attics and hvac ducts that are installed on the attic floor bury ducts in blown attic insulation when adding or increasing attic insulation.
The international residential code allows you to run a dryer vent through the attic but you can t terminate it there.
A client who lived in an apartment in new york city engaged our company to find why her city apartment could not get cool even though she had a new air conditioning system installed.
If a supply duct is broken or disconnected warm moist air from the furnace can escape directly into the attic.
Vent ducts that are damaged or disconnected.
Faulty cold air return.
Remember that article i wrote about ducts installed against the roof deck and how i said it was probably the absolute worst single location for installing ducts.
We found that the ducts had become disconnected in the attic crawl space where the air handler was placed.
Disconnected or leaking ducts.
Vent ducts that terminate into the attic and not to the exterior of the property.
When working in a small space be sure to bring all the necessary tools including.
The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago.
Not checking all of the vent ducts in the attic.