COMMUNITY FORUM

harvey_mason

10:27AM | 01/20/04
Member Since: 03/04/03
44 lifetime posts
Bvhvac
Last year I had a new forced hot air furnace and central AC system installed.I already had the original duct work in for the heat(square sheetmetal ducts)
so I figured now was time to add central AC

While the system works good, in very hot weather when the ac runs all day I notice the sheetmetal ducts close to the furance sweat and drip cold water onto the ground in two spots.And there are all wet beads of water on the bottom of the duct work Mostly at the widest portion of the duct work, before it splits up and goes up the ceiling.I can take a towel and wipe it dry but it returns fairly quickly.

For all I know it could be sweating inside the walls also. This concerns me, I am worried about damaging the walls.

Why does this happen and can I insulate with anything?? IS something under or oversized onmy system?? If so, what kind of insulation can I use for the metal ductworks?? Also, was this old duct work made to take cold air from the ac unit?? Iwas told it would be ok but I could have just been fed that line so he got the job.

Any help is greatly appreciated,

Thanks in advance,
Harvey

harvey_mason

02:41AM | 01/21/04
Member Since: 03/04/03
44 lifetime posts

"Get an independent measurement of the air flow thorugh your ductwork."

I am a laymen when it comes to these terms, Can you explain what exactly this entails?

WOuld I have to hire someone to do this??

Thanks in advance,

Harvey

harvey_mason

09:38AM | 01/21/04
Member Since: 03/04/03
44 lifetime posts

How about the company who put the system in approx 1 year ago???

Do you think that is a bad idea??

Thanks,
Harvey

CIWS

11:16AM | 01/22/04
You may also have a very humid basement causing the duct to sweat. You need to find a contractor that is experienced in air flow measurements. Your typical contractors are not versed in airflow problems.

plumber Tom

03:23PM | 01/22/04
Member Since: 05/10/03
801 lifetime posts
Harold is right on the money on this one! You need the proper clearances for air flow ABOVE the coil in the plenum. Common rectangular ducts require the installation of a vane to prevent the evaporator coil from freezing.

harvey_mason

05:18AM | 01/23/04
Member Since: 03/04/03
44 lifetime posts

Thanks for the advice guys. I will look into getting a measurement of airflow done.

In the meantime how can I determine if there is a "vain" installed on my system??

What does it look like and where would I look for it?

Again, the system was installed but the existing old metal duct work was not changed.

Thanks in advance,
HArvey

Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

Anonymous

Post_new_button or Login_button
Register

Wash the bricks and paint one edge with acrylic paint. Once the bricks are dry, use a Sharpie to write out book titles and... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled entryway will get you in the outdoor mood. Grab your coat... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... A kitchen in a greenhouse—who wouldn't enjoy spending time in this light-filled space? Details that enhance the conservato... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... The Infinite Artisan Fire Bowl from Eldorado Outdoor is made from glass-fiber reinforced concrete, and offered in Oak Barr... The vibrant green of Granny Smith apples make a beautifully natural alternative to the traditional evergreen wreath. Brigh...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp1