It's amazing how bad the air exchange industry screwed up their customer education.<div><br></div><div>HRV = Heat exchange (heat/cool) only</div><div>ERV = Energy exchange (heat/cool) & moisture.</div><div><br></div>
<div>The ERV just helps to maintain whatever the humidity levels between the inside and outside RH levels. The hrv does no moisture exchange, therefore, it could be better, or worse, depending on your inside and outside conditions.</div>
<div><br></div><div>Whether the ERV would be worth the additional cost in your climate is up to you. They're not that much more if you can pick them up straight from the distributor.</div><div><br></div><div>Unless you live in a desert, you'll most likely need dehumidification in the summer, unless you're AC is running nonstop and is good at dumping moisture.</div>
<div><br></div><div>j<br><br><div class="gmail_quote">On Fri, Apr 15, 2011 at 9:09 AM, John Beeson - Sunny Side Up <span dir="ltr"><<a href="mailto:emailme0617@yahoo.com">emailme0617@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div style="font-family:arial,helvetica,sans-serif;font-size:10pt">Is John Straube out there? Or others have insight as well, I'm sure.<br>
<br>I'm trying to learn more about the "necessary" dehumidification a fairly tight house in Tennessee would need. I mostly understand the concept that when ventilated with an ERV, the Fall/Spring months will see an increase in interior humidity because the ERV is not "dehumidifying"... or something like that. See, I need to learn more about it.<br>
<br>I searched <a href="http://buildingscience.com" target="_blank">buildingscience.com</a> and found some interesting research results, but I need a primer that explains the issue first.<br><br><span><a href="http://www.buildingscience.com/documents/reports/rr-0215-dehumidification-systems-research-results/view?searchterm=ERV" target="_blank">http://www.buildingscience.com/documents/reports/rr-0215-dehumidification-systems-research-results/view?searchterm=ERV</a></span><br>
<br>Thanks everyone!<br><br>-John<br><br><font size="1"><span style="font-family:courier,monaco,monospace,sans-serif">----------------------------------------------------------------------</span><br style="font-family:courier,monaco,monospace,sans-serif">
<span style="font-family:courier,monaco,monospace,sans-serif"> / \ John E. Beeson, AIA, </span><span style="font-family:courier,monaco,monospace,sans-serif">NCARB, </span><span style="font-family:courier,monaco,monospace,sans-serif">LEED AP BD+C</span><br style="font-family:courier,monaco,monospace,sans-serif">
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