I've been searching the web, including sites dedicated to energy efficiency in residential building, and I cannot find substantiated facts related to how much energy Recessed Can Lights consume.  I'd love to see comparisons of non-IC, IC, and ICAT cans regarding measurable facts on how their air leakage contributes to energy usage.  The only study I can find is from Penn State University that was done maybe 10 years ago, and it was short on details.  I'm not asking about electric consumption; only about energy consumption regarding air infiltration.  Can anyone help?

Tags: Recessed, air, can, infiltration, lights, recessed

Views: 105

Reply to This

Replies to This Discussion

I am trying to understand your question properly... are you asking what the potential "energy/heat loss" would be through the recessed cans cut-outs? Do you have the article link that you had mentioned?

Hi Caron,

Yes, here is the link to the article: http://arizonasolarwave.com/docs/recessed-lights-air-leakage-phrc.pdf.

Here's a relevant quote from the article that hints at the information I'm looking for: "As part of the inspection protocol, blower door testing, done in conjunction with infrared imaging, has revealed that out of all the possible air leakage sites in a house, can lights are responsible for the worst leakage."  But they don't give numbers, except for claiming that one can light can be responsible for transmitting up to 1/3 gallon of water per day into the attic, and between $5-30 per year in energy costs.  The study was done in 1992.  Surely we have more recent data with more numbers. 

When we do pressure pan testing with the Blower Door running, we also check can lights to show the home owner.  Invariably, we find most can lights to test at 35-50 pascals while the Blower Door is running at 50 pascals.  Quite a lot of air infiltration, but we're not running a study with publishable numbers.  Are there any updated data out there on recessed can lights?

Hi

 Good luck getting the lastest #s Let me add to your list of variables , beyond

talking about the thermal attributes of the various popular LED lights - something that should be considered is

the air infiltration and exfiltration though the ventilated fixtures designed for incandescent lamps & their heat output.

 Changing to appropriate, and contemporary SSL including Oleds means that these holes in folks ceilings, would

need to be re- thought as they may be wholey unnecessary for 21st century lighting schemes-

RSS

Photos

Loading…
  • Add Photos
  • View All

Latest Activity

John Livermore's video was featured

Healthy Home Healthy Planet

Find out how we... - Zeroed out our home's carbon footprint - Stopped paying energy bills - Helped the planet And became the 1st renovated home in Massachuse...
39 minutes ago
Sean Lintow Sr added a discussion to the group Best Practices (Residential)
Thumbnail

Radon - Passive Systems

Just curious - many locals (per codes) require…See More
2 hours ago
Duncan Cumming posted a blog post

Preparing for Winter: Time for Your Central Heating Check Up

With winter just around the corner, make certain you are not left out in the cold – get your…See More
6 hours ago
Joe Crisara posted a blog post

Give Your False Assumptions a Knockout Punch

By Derek LauberWe face seemingly unlimited obstacles when trying to manage and grow our…See More
18 hours ago
Profile IconJoe Crisara, Earth Advantage, Sydney G. Roberts and 6 more joined Home Energy Pros
18 hours ago
Jonny Fisher added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Minneapolis Blower Doors and Duct Blaster for sale

I have two Minneapolis Blower Doors + DG 700, duct blaster with manometer and some other…See More
18 hours ago
Jonny Fisher replied to Hamed Ghanbari's discussion Need a Minneapolis Blower Door + DG 700 in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"I have two Minneapolis blower doors with DG 700.  I also have some other used equipment if you…"
18 hours ago
Nolan Walker replied to Hamed Ghanbari's discussion Need a Minneapolis Blower Door + DG 700 in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Hi Hamed, I have an extra Minneapolis blower door system - nolanwalker@gmail.com for more…"
20 hours ago

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service