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

Energy Efficiency Ratio (EER)

Energy Efficiency Ratio, or EER, is a way to exhibit how well an air-conditioner is operating based on the power being used.  Most homeowners are of course familiar with SEER, the ratio across an entire season.  Since SEER is tested at a "partial load", the EER is a more realistic number to use when figuring energy savings.  AHRI tests their EER of residential air-conditioners using 400 CFM per ton of airflow at 95F Outdoors / 80F Indoors and 67F Wet Bulb.  This compared to the SEER testing…

Continue

Added by Christopher Morin on April 28, 2012 at 6:47pm — 6 Comments

Non-Condensables? Are you sure?

  Non-condensables in a residential split air-conditioner can be, for most technicians, a pandora's box to diagnose.  Fortunately, there is a simple process that can identify this condition without spending hours and hundreds of dollars in virgin refrigerant.  I think we all are aware that R-22 has hit an all time high, so getting this right is more important than ever - if you want to retain your customer.

  There are several ways air and/or water vapor can enter a sealed system. …

Continue

Added by Christopher Morin on April 15, 2012 at 11:30am — 2 Comments

New England; HRV or ERV?

I remember installing some early version residential Energy Recovery Ventilators (ERV) and discovering a potential freezing issue.  Also, if I used only a Heat Recovery Ventilator (HRV) than I would be drying the air during the Winter, and adding significant latent load in the summer.  So, which one do I choose?  The homes are tight enough these days to require mechanical ventilation, and I would much rather a balanced ventilation system that I can control.…

Continue

Added by Christopher Morin on April 9, 2012 at 10:30am — 2 Comments

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Rosie Smith replied to edward knight's discussion Minneapolis duct blaster for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Hi Edward...is this equipment still available?? Thanks, Rosie Smith Fresno,…"
12 hours ago
Rosie Smith joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
12 hours ago
Jim Gunshinan liked Tom White's discussion Home Energy Reader Survey
22 hours ago
Tom White posted a discussion

Home Energy Reader Survey

Home Energy wants to serve you better.  Please …See More
yesterday
George Matthews's event was featured

Proof is Possible Tour by the Home Performance Workshop at Truitt and White Lumber Conference Room

October 7, 2016 from 9am to 1pm
Building Energy Performance Testing is sponsoring the Proof is Possible Tour to come to the San…See More
Monday
Profile IconAshley Noreuil, Fred Smith and Peter Moncada joined Home Energy Pros
Monday
George Matthews commented on George Matthews's event Proof is Possible Tour by the Home Performance Workshop
"Here is the flyer for the Advanced Techniques and Tools in Home Performance Friday October 7th at…"
Sunday
George Matthews posted an event

Proof is Possible Tour by the Home Performance Workshop at Truitt and White Lumber Conference Room

October 7, 2016 from 9am to 1pm
Building Energy Performance Testing is sponsoring the Proof is Possible Tour to come to the San…See More
Sunday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service