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Hot Attics

Bud_14
Bud_14 Member Posts: 200
We're getting into the peak A/C season, which includes air handlers and Unico Systems in the attic. What temperature in the attic does it have to reach before you call it quits for the day? What do you do to try to keep it cooler up in the attic?

Bud
<a href="http://www.thesheetmetalshop.com">www.TheSheetMetalShop.Com</a>

Comments

  • Bud_14
    Bud_14 Member Posts: 200


    We're getting into the peak A/C season, which includes air handlers and Unico Systems in the attic. What temperature in the attic does it have to reach before you call it quits for the day? What do you do to try to keep it cooler up in the attic?

    Bud


    www.TheSheetMetalShop.Com
  • Robert O'Connor_7
    Robert O'Connor_7 Member Posts: 688
    Hot attics?

    Bud, it's a little hot eh? Why not take an old fan motor off a unit, mount it to a board, install a plug and walha! Instant air. I know it doesn't help to much with the extreme heat but, working up there will get alot more bareable when the sweat isn't pouring off you. I canabulized a fan off one years ago and won't leave home with out it (especially when I know I'm going in the attic)..Robert O'Connor/NJ
  • DaveC
    DaveC Member Posts: 201
    Don't have a good solution to that, but...

    you guys who do that have my complete sympathy. I had a few jobs, mostly during the summer, as an a/c installer helper. I don't recall any breaks from being kept up in attics, other than lunch or going to the truck for something. I tried drinking as much water as I could - but even with all the sweating, I found it necessary to use a bathroom alot, and neither my boss or the homeowners seemed to appreciate that need. I see some portable room a/c's available now, that duct out a window (9000 BTUH) - could one or two be placed up there and run the duct out a roof vent?
  • Matt_21
    Matt_21 Member Posts: 140


    Once it gets too hot, we call it quits for the summer. On occasion, we will install the air handler, piping, wiring and use it for cooling the attic while we install the ductwork. This usually happens on a larger commerical job where you have a week or so of attic ductwork.
  • Ranger
    Ranger Member Posts: 210
    I'm with matt...

    ..used to have a 5 Ton blower assembly from an old extracted furnace w/a blank off plate on one side to keep the motor from overloadin'.Two guys would get the a/h and the outdoor unit hooked up and running while the other two were cutting in ceiling boxes and flexin'out.Trunkwork last.
    New construction get the attic fan(s) fired up off an extra extension cord if posible.And above all else get in there as e-a-r-l-y as posible.Tight attic's and knee-wall installs
    are the worst.Definitely a young man's job.I absoluely love the Refletix bubblewrap duct insulation over the fiberglass scrimm.Believe it or not Boiler rooms on ships or buildings
    that use indirect steam fired absorbers are actually h-o-t-t-e-r.imagine that.I've been stuck in both...
    Ranger
  • lchmb
    lchmb Member Posts: 2,997
    early or late

    I have on a number of occassion's started at 5 a.m and worked till about 12. When it get's toasty I take the afternoon and go fishing..:)
  • Steamhead
    Steamhead Member Posts: 14,832
    Keeping the Attic Cool

    We don't do a/c, but a good, inexpensive way to cool an attic is to install screened louvers (4X16, 8X16, round- whatever suits the job best) in the soffits, in conjunction with gable or ridge vents. This allows gravity circulation thru the attic. I have this setup in my house, and it worked so well I did my parents' and sister's houses too. Think of it- no fan, no power consumption- nothing to maintain. Mother Nature does all the work.

    This would be a good thing to sell as part of an a/c job, it would reduce the cooling load, allow the use of a smaller unit and save a ton (pun intended) of energy. Plus, you could create a more hospitable working environment in the attic by installing the vents first.

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  • JB_2
    JB_2 Member Posts: 68
    Hot attics

    ditto on the hook up in the attic. set the air handler, and outdoor unit,get it wired,and let it run.{ does blow around some of the dust & insulation but better than nothing} JB
  • Mike Kraft_2
    Mike Kraft_2 Member Posts: 398
    Early up

    and in the crawl for the afternoon:)

    cheese
  • hr
    hr Member Posts: 6,106
    I bought one of these

    to take around and demo at some of my commercial radiant shop jobs. Pretty much a portable swamp cooler, with a water tank and pump in the bottom.

    I suppose a flex duct or two could be adapted on to feed up to the attic space.

    I let a small weld shop demo it late last fall. They loved it! can't get too close to the TIG or MIG welders, however, tends to mess with the shield gas flow :)

    hot rod

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  • GaryDidier
    GaryDidier Member Posts: 229
    hot attics

    Bud, If you must work in hot attics this time of year this can help alot. Get yourself about 100 feet of the mist type soaker hose. Lay it on or near the roof ridge and turn the water on. The evaporative cooling will reduce internal temps by 20 -30 degrees. A contractor I worked for back in the day used to do this and it was a cheap solution that worked well. Good luck.

    Gary from Granville
  • Wayco Wayne_2
    Wayco Wayne_2 Member Posts: 2,472
    Great stuff!

    We spent a lot of the last week in the attic. The job was made worse by the racket made from the 17 year cicadas. I was hooking up the outdoor unit and couldn't hear the lawnmower next door from the noise they were making. Any other area have them?? I tend to finish the a/c first and run the a/c while we assemble the duct work. The local supply houses are now selling vests that can be refrigerated before you go up. Head bands too. I love the soaker hose idea and the swamp cooler. Where do you get the swamp cooler?? WW

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  • Tony_8
    Tony_8 Member Posts: 608
    check out

    Texas Cool Vests. Supposed to give 4 hours of service on a "charge".
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