Christopher Morin's Blog – June 2012 Archive (3)

Duct Gains: Why do we hate R-8?

Ever since the adoption of the 2009 International Residential Energy Conservation Code (IECC), duct sealing efforts have been tested using the total leakage or leakage to outdoors methods.  It really is amazing how much duct gains effect the operation of your equipment and the comfort of your customer.  The missing part of "duct testing" appears to be how well the ducts are insulated.  Sure, you are required to use R-8 insulation on supply ductwork when located outside the building envelope,…

Continue

Added by Christopher Morin on June 26, 2012 at 1:13pm — 1 Comment

Site Survey: Windows & SHGC

  When completing your site survey for Manual J Load Calculations, significant time can (or should) be spent identifying window values.  Did you know that most windows these days come with an NFRC rating, a tag located in the window jam that you can reference on NFRC.org? This identification number can tell you important details like window coatings, u-value, light transmittance, air leakage, and solar heat gain coefficients (SHGC).  Not identifying the correct values can sway your load…

Continue

Added by Christopher Morin on June 10, 2012 at 6:34pm — 2 Comments

Heat Pump Break-Even COP's

How do you know if  should upgrade your air-conditioner to a heat-pump and create a dual-source application during replacement this Summer?  I personally always prefer the option of multiple fuel sources, particularly since energy prices have been all over the place during the last decade.  Fortunately, based on average energy prices, there is some simple math to figure out if an aggressive assessment should be made for a dual-source heat pump application, based on equations from ACCA's…

Continue

Added by Christopher Morin on June 3, 2012 at 12:23pm — 5 Comments

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Chris Heenan replied to Dale Hoffmeyer's discussion Friends and Family Referral Marketing
"I wish this forum had thumbs up buttons."
15 hours ago
Russ Eisenberg replied to Dale Hoffmeyer's discussion Friends and Family Referral Marketing
"I like a 2 prong approach.  Refer someone and the referrer gets $X and the referral gets $x…"
15 hours ago
Brian Toll replied to Dale Hoffmeyer's discussion Friends and Family Referral Marketing
"We get a handful of audit referrals each month by offering a $25 bounty to our customers through…"
16 hours ago
Tom White's video was featured

Hayward Healthy Home Principles and Products

Bill Hayward discusses the principles that were used to build the first Hayward Healthy Home and how the products were evaluated for toxicity before they wer...
16 hours ago
jackie harsha is now a member of Home Energy Pros
16 hours ago
Diane Chojnowski replied to Jan Green's discussion Retrofitting a 1979 Home to NAHB Silver or Gold - Pending Cert
"Jan, please post your slide deck or presentation here. We'd love to see it!"
17 hours ago
Jan Green posted a discussion

Retrofitting a 1979 Home to NAHB Silver or Gold - Pending Cert

I'm excited to be the lone speaker for the last in a series of lectures for the Scottsdale Green…See More
Sunday
Crosbey Archery liked Crosbey Archery's blog post How to improve the air quality in your home ?
Saturday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service