John Nicholas
  • Derby, KS
  • United States
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Latest Activity

John Nicholas replied to Barry NewDelman's discussion Whats the Consensus of this group Define "Energy Efficiency" in the group Energy Efficient Design
"There are many ways of saving energy.   I can turn down the thermostat and put on a sweater.  or use a programmable and ignore the setting by wearing more clothes.  My bill drops a number of BTUs. I can take a military shower.…"
Jan 16
John Nicholas replied to Sean Lintow Sr's discussion Duct Testing - is a change in order? in the group Best Practices (Residential)
"Follow Up on 787 cfm at 25 total leakage. Ted, 1425 sf conditioned space. The systems were installed with no tape or mastic used. This model had sheet metal trunks with sheet metal take offs; in the basement ceiling / main floor truss system.…"
Dec 20, 2013
John Nicholas replied to Sean Lintow Sr's discussion Duct Testing - is a change in order? in the group Best Practices (Residential)
"My understanding of duct leakage per sqft of conditioned floor area came out in Energy Star 3.0. The size adjustment factor, the penalty for oversizing homes with the use of a Target HERS Score were ways of making builders look at downsizing homes.…"
Dec 20, 2013
John Nicholas replied to Kari Sauder's discussion raised ranch heating, can't balance it in the group HVAC
"Check for Contractors certified by ACCA to do Energy Star V 3.  That program requires Man J and D so you will not be told,  "Oh! You don't need to do that! I've been doing this for 35…"
Nov 8, 2013
John Nicholas replied to Kari Sauder's discussion raised ranch heating, can't balance it in the group HVAC
"Kari,  Your air sealing has brought the home down from 7.6 ACH @ 50 to 5.5 ACH @ 50.  Nice gain.  Almost meets Energy Star.  You can get it lower, gains from this point will be effective with more effort.  Get some IR images…"
Nov 8, 2013
John Nicholas replied to Kari Sauder's discussion raised ranch heating, can't balance it in the group HVAC
"You've spent time air sealing and doing good work.  You seem to have the equipment in line.  What about the rest of the thermal enclosure.  Do you know what insulation there is?  Especially in the basement area. I get calls…"
Nov 7, 2013
John Nicholas replied to Bud Poll's discussion Calculating attic ventilation
"Bud,  I know you believe every house is a unique structure and worth individual attention. If you have a 900 sf ranch with a full basement, or 1800 sf conditioned space. ca 1965.  No vaults etc. The 1:300 is 3 sf of attic ventilation.…"
Nov 3, 2013
John Nicholas replied to Bud Poll's discussion Calculating attic ventilation
"We use it because we are stuck with it!  No one likes change! No one really understands why attic ventilation needs to happen. How to make it work correctly or the problems with incorrect work on the attic enclosure. We do not realize the…"
Nov 3, 2013
John Nicholas replied to scottscontracting's discussion Is my HVAC Guy correct? 2 systems instead of 1 system with Dampers
"If you are looking at any kind of an EEM for residential property, you will need a HERS Rater. If the existing flex is not well installed, replace.  If outside the envelope, buy R-8 insulation. If on the ceiling plane, bury the ducts in your…"
Nov 1, 2013
John Nicholas replied to scottscontracting's discussion Is my HVAC Guy correct? 2 systems instead of 1 system with Dampers
"Scotty, How old is the existing system?  Is this a heat pump since you only talk tons or is it a furnace / AC?  You are in St. Louis so CZ 4  Mixed Humid.  What else do you know about the existing enclosure?  Blower Door…"
Nov 1, 2013
John Nicholas replied to Sean Lintow Sr's discussion Duct Testing - is a change in order? in the group Best Practices (Residential)
"I think each type of home is different.  Trunk/branch have advantages, spider has advantages. Smaller more compact area for distribution is benefited by a spider system. Think 1000 sf Longer, less compact areas are benefitted from a…"
Oct 30, 2013
John Nicholas replied to Sean Lintow Sr's discussion Duct Testing - is a change in order? in the group Best Practices (Residential)
"I don't know at this time.  Will have to see what develops on this one! "
Oct 30, 2013
John Nicholas replied to Sean Lintow Sr's discussion Duct Testing - is a change in order? in the group Best Practices (Residential)
"I can see the advantages of duct surface area!  I also disagree with leaving the equipment out of the equation.   The only way to get the surface area will require reporting to the AHJ. BTW:  I tested a duct system 3 weeks ago.…"
Oct 29, 2013
John Nicholas replied to Bud Poll's discussion Calculating attic ventilation
"Rose was not saying anything about height, NFA or cross ventilation. Rose was summarized the history of attic ventilation research as he found it.  Rose did no actual hands on research. He read what Rowley and other conducted. Rose concluded,…"
Oct 25, 2013
John Nicholas replied to Bud Poll's discussion Calculating attic ventilation
"Bud,  Read the book.  Rose never found any research regarding attic height. He only found cross ventilation. He didn't find 1:300 or 1:150 in anything research wise.  He found the first mention of 1:300 in the 1942 guidelines.…"
Oct 25, 2013
John Nicholas replied to Bud Poll's discussion Calculating attic ventilation
"Bud,  Don't sweat any research on attic heights etc.  It has already been done.  William B. Rose. Water in Buildings: An Architect's Guide to Moisture and Mold (Kindle Location 2469). Kindle Edition; traces the requirement…"
Oct 25, 2013

Profile Information

Company
Efficient Energy Savers
Professional Certification
HERS Rater - Level I Thermography
Professional Interests
Building Certification, Improvement
Website URL
http://efficientenergysavers.com

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John Nicholas's Blog

Energy Auditors Rock! They Depressurize!

You’ve been in the attic, the crawl spaces or basement, climbed up and down any stairs several times. There have been some questions from the home owner and perhaps from the kids in the house. If you are like me, you’ve bumped your head a few times on low hanging fruit. It has been a fun, rewarding and perhaps a little stressful.

The thing I do to relieve this stress, is to depressurize. Yes, let all that built up stress just…

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Posted on January 22, 2012 at 6:00am

 
 
 

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"Nate, RE: Duct test On my own home and a rental I have tested more than once over the last many…"
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