Dehumidifier


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Old 10-17-14, 04:34 PM
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Dehumidifier

Can anyone recommend a good dehumidifier? Orkin has recommended getting one for my mom's crawlspace but they're highly priced, IMHO. They want $1575 to install one in her 1000 sq ft crawlspace and the one they want to install coves a 3000 sq ft area. A Mega Dry 70 is what they generally use.

Thank you.
 
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Old 10-17-14, 04:43 PM
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Does it have to be an installed unit ?
Why not a roll around type with a remote drain line.

Is this crawlspace open to the basement ?
 
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Old 10-17-14, 05:23 PM
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No, she has no basement.

I am just going to put one in that has wheels and it will have a drain line but I want to get her a good one as I don't want to go cheap and then it not work properly.

Thanks PJ!!
 
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Old 10-17-14, 05:28 PM
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Is there a moisture barrier over the crawl floor? Just dirt? Or a thin slab?

Bud
 
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Old 10-17-14, 05:54 PM
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a few layers of thick poly.
 
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Old 10-18-14, 03:30 AM
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HOLY SH** !!!!!!!!!!!! really ??????? we use frigidaire's off eBay - 70pints a day incl pump IF you need to pump it up 10',,, i should buy orkin stock !

$299 Frigidaire 70 PT Pint Low Temp Energy Star Dehumidifier FAD704D Save $$$ | eBay

[ no $ interest ] that's just what we use -$ 169 + $ 40 to ship & NO SALES TAX for that particular listing - you can probably find a lesser $
 
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Old 10-18-14, 09:31 AM
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Orkins price was not out of line for the unit they spec'd. They spec'd a permanent mount hi volume unit with filter. Honeywell make an equivalent unit. The problem is that it's oversized for your area.
 
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Old 10-18-14, 10:08 AM
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The crawlspace is not vented to the outside, right?
 
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Old 10-18-14, 10:11 AM
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Chuck, one question might be, what were they concerned about when they specified that top of the line large unit? With a good moisture barrier in place, unless there is a water problem, there should be a limited amount of moisture. Are the walls of the crawlspace insulated or the floor between the house and the crawl? Any appliances down there, furnace, hot water, ducts?

Bud
 
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Old 10-18-14, 11:06 AM
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This is the unit they always use even though it's rated for 3000 sq ft and moms' is 1000. These people are pricey not only for this but other work they've quoted. It's insulated between the house and crawl with 7 or 8 inch thick insulation. There's no insulation on the cement block foundation. Years ago the insulation needed to be replaced and they asked for $2700 but I got then down to $1800.

There's been intermittent problems for years but no damage to the wood beams. Orkin and the other two companies that we've used over the years are full of inept people (hillbillies) who want to gouge an old lady for her money. There are no appliances. I have 3 16inch box fans circulating air and the 2 vents installed by Orkin to pull in fresh air. These two are controlled by the humidistat in them.

When I install a humidifier I will seal the area and use a hose for the discharge. Also I want one with a humidistat.

I need one that's cost effective but will do the job. $1575 is nuts.

Thanks!!!
 
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Old 10-18-14, 11:57 AM
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There's no point putting in a dehumidifier if outside air is let into this space.
 
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Old 10-18-14, 01:10 PM
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I will seal the area from outside air.
 
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Old 10-18-14, 01:37 PM
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I'm curious, what are the problems this dehumidifier is going to fix? Did you or Orkin take some relative humidity (RH) readings?

One reason I'm concerned is the fact it was/is vented and your location can have very humid summers (I spent a few years on the Jersey coast). When the outside RH is 75% and the inside crawlspace is 20 cooler that same air and moisture content will probably be dripping off of anything cool. My point here is, your moisture source may have been the vents.

Tell us more about the actual problem and what readings were taken. Also, where they think the moisture is coming from?

Bud
 
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Old 10-29-14, 08:35 AM
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Sounds like you need a good VB installed. This should be run up the walls just a few inches away from the seal plate. All seams need to be sealed. This should take care of 99% of all moisture issues.
 
 

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