<div dir="ltr"><div>Those are great stats, Mike. <br></div>I wonder how or whether things may have changed at all in recent years. I've not had any RH displays to view day in and day out until the last few winters, but I've been surprised--assuming the instrument is accurate--that there have been stretches, last winter for several months straight, of 98% humidity. <br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Dec 24, 2014 at 7:58 PM, Michael O'Brien <span dir="ltr"><<a href="mailto:obrien@hevanet.com" target="_blank">obrien@hevanet.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Hi, Reuben--</div><div><br></div><div>Here's some average RH stats for Oregon cities.</div><font style="font-family:arial" size="+2" face="arial"><div><font style="font-family:arial" size="+2" face="arial"><br></font></div>OREGON</font><pre> YEARS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
M A M A M A M A M A M A M A M A M A M A M A M A M A M A
ASTORIA, OR 40 40 86 78 87 74 88 71 89 69 90 70 90 71 90 69 91 70 91 69 90 73 88 77 87 80 89 73
EUGENE, OR 36 49 92 80 92 72 92 64 91 58 91 54 90 49 88 38 88 39 89 43 94 62 93 79 93 84 91 60
MEDFORD, OR 32 32 90 71 88 57 86 50 84 44 83 39 79 33 74 26 75 27 79 29 86 43 92 67 91 76 84 47
PENDLETON, OR 52 54 80 75 79 65 74 50 71 42 69 37 65 32 54 23 54 26 61 32 72 46 79 69 82 78 70 48
PORTLAND, OR 53 53 86 75 86 67 86 60 86 55 85 53 84 49 82 45 84 46 87 48 90 62 88 74 87 78 86 59
SALEM, OR 31 31 87 75 88 68 87 61 87 57 87 53 87 49 86 41 86 40 87 45 90 59 90 76 88 80 88 59
SEXTON SUMMIT, OR 7 22 80 72 79 70 84 68 84 63 74 53 73 49 65 40 67 42 66 45 70 58 81 75 79 75 75 59
</pre><hr style="font-family:arial" color="orange"><font style="font-family:arial" size="+2" face="arial"></font><div><br></div><div>M = Morning</div><div>A = Afternoon</div><div><br></div><div>From <a href="http://www.shorstmeyer.com/wxfaqs/humidity/rh.html" target="_blank">www.shorstmeyer.com/wxfaqs/humidity/rh.html</a></div><div><br></div><div>Best,</div><span class=""><div><br></div><div>Mike</div><div><br></div><div>
<span style="border-collapse:separate;border-spacing:0px"><span style="border-collapse:separate;color:rgb(0,0,0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word"><div>Mike O'Brien Photography</div><div><a href="http://mikeoregon.zenfolio.com" target="_blank">mikeoregon.zenfolio.com</a></div><div><br></div></div></span><br></span><br>
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<br></span><div><div class="h5"><div><div>On Dec 24, 2014, at 2:19 PM, Reuben Deumling <<a href="mailto:9watts@gmail.com" target="_blank">9watts@gmail.com</a>> wrote:</div><br><div><div dir="ltr"><div>I look forward to this discussion. <br></div>I'll just answer the very first question, in my case the fan(s)--and I'd love to combine both stove and shower intakes--are for removing moisture from the interior. We have 98% RH outdoors for months at a time here in the PNW, and inside we're in the low seventies which strikes me as far too humid. <br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Dec 24, 2014 at 2:16 PM, Alan Abrams <span dir="ltr"><<a href="mailto:alan@abramsdesignbuild.com" target="_blank">alan@abramsdesignbuild.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div>more generally, what about the role of any exhaust system? how does depressurization affect other conditions and systems? is there an ERV, and if so, is it balanced to admit compensatory make-up air? are there any combustion systems, or fireplaces with imperfect flue dampers? <div><br></div><div>is it possible to reduce the number of exhaust openings, by collecting air from individual spaces with a central fan? What about the routing of the exhaust line; given it will tend to be at ambient conditions, how is the line insulated, and how well does the damper work? How does the new requirement for make-up air for range hoods greater than 400cfm come into play? </div><div><br></div><div>these factors may have as much as--or more significance than--the fan unit itself.</div><div><br></div><div>No answers tonight, we've already opened a bottle of Cab.</div><div><br></div><div>Merry Christmas to all, and to all, good-night!</div><div class="gmail_extra"><span><font color="#888888"><br clear="all"><div><div><div dir="ltr"><font><font><span style="color:rgb(102,0,0)">Alan Abrams</span></font><b style="color:rgb(102,0,0)"><br></b><i><span style="color:rgb(102,102,102)">certified professional building designer, AIBD<br>certified passive house consultant, PHIUS</span></i></font><div><i><span style="color:rgb(102,102,102)">certified passive house builder, PHIUS</span></i><font><span style="color:rgb(102,0,0)"><font color="#666666"><i><br></i></font></span></font><font style="color:rgb(102,102,102)" size="1"><font>cell </font></font><font style="color:rgb(102,102,102)" size="1"><font><a href="tel:202-437-8583" value="+12024378583" target="_blank">202-437-8583</a></font></font><font style="color:rgb(102,102,102)" size="1"><font><br>
<a style="color:rgb(102,102,102)" href="mailto:alan@abramsdesignbuild.com" target="_blank">alan@abramsdesignbuild.com</a><br style="color:rgb(102,102,102)"></font></font><a href="http://www.heliconworks.com/index2.html" target="_blank">HELICON WORKS <i>Achitecture and Education</i></a></div></div></div></div></font></span><div><div>
<br><div class="gmail_quote">On Wed, Dec 24, 2014 at 4:14 PM, ErgoDesk <span dir="ltr"><<a href="mailto:ergodesk@gmail.com" target="_blank">ergodesk@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><font size="4" face="arial narrow, sans-serif">Try Google, </font><span style="font-family:arial,sans-serif;font-size:16px"> </span><span style="font-family:arial,sans-serif;font-size:16px">low-wattage/high efficiency exhaust fans - </span><span style="font-size:16px"><a href="http://goo.gl/tySU2D" target="_blank">http://goo.gl/tySU2D</a></span></div></div><div class="gmail_extra"><br clear="all"><div><div><div dir="ltr"><div><div dir="ltr"><div><span style="color:rgb(51,51,51);font-family:proxima-nova-1,proxima-nova-2,Tahoma,Helvetica,Verdana,sans-serif;font-size:14px;line-height:21px">Sincerely,</span><br style="color:rgb(51,51,51);font-family:proxima-nova-1,proxima-nova-2,Tahoma,Helvetica,Verdana,sans-serif;font-size:14px;line-height:21px"><span style="color:rgb(51,51,51);font-family:proxima-nova-1,proxima-nova-2,Tahoma,Helvetica,Verdana,sans-serif;font-size:14px;line-height:21px">George Hawirko</span><font color="#0000ee"><u><br></u></font></div><div><font color="#0000ee"><u><a href="http://about.me/StyroHome" target="_blank">http://about.me/StyroHome</a></u></font><br></div></div></div></div></div></div><div><div>
<br><div class="gmail_quote">On Wed, Dec 24, 2014 at 12:47 PM, Michael O'Brien <span dir="ltr"><<a href="mailto:obrien@hevanet.com" target="_blank">obrien@hevanet.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hi, Reuben--<div><br></div><div>Start with Panasonic fans--low wattage, durable, quiet--see what you think.</div><div><br></div><div>Happy Christmas,</div><div><br></div><div>Mike</div><div><br><div>
<span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word"><div>Mike O'Brien Photography</div><div><a href="http://mikeoregon.zenfolio.com/" target="_blank">mikeoregon.zenfolio.com</a></div><div><br></div></div></span><br></span><br>
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<br><div><div><div><div>On Dec 24, 2014, at 12:33 PM, Reuben Deumling <<a href="mailto:9watts@gmail.com" target="_blank">9watts@gmail.com</a>> wrote:</div><br></div></div><div><div><div><div dir="ltr">I'm curious to learn where to begin my search for low-wattage/high efficiency exhaust fans. <br>Thanks for any tips. <br><br>Reuben<br></div></div></div>
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