Looking at leaky can lights.

Leaky recessed-can lights were big energy wasters before they were sealed.

Comment

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

Comment by Adam Zielinski on March 24, 2011 at 12:01pm

Sealing up a can light with a foam board box is a code violation and unsafe.  If you do it, you need to use a non combustible material, like drywall, or one of the tenmat mineral wood recessed light covers.  http://www.tenmat-us.com/

 

The Cree LR6 LED conversion kits are nice, and should cut down on air leakage.  However if you install them in a non-IC rated can light housing, you still are not supposed to put insulation over the top of them.  So you would still have to baffle around the can in the attic.   The best option for Non-IC can lights is to remove them and replace them with IC rated fixtures, or some other alternative lighting. 

 

Comment by Jim Gunshinan on January 24, 2011 at 2:42pm

Haven't heard of that Bob, thanks for the heads up!

 

Comment by Bob Small on January 20, 2011 at 3:04pm
Have you seen the Cree LR6 LED conversion? www.creeLLS.com Lets you switch to an LED bulb in a sealed unit that screws in to your existing can housing. Great price too.
Comment by Jim Gunshinan on December 20, 2010 at 10:55am

Sorry, that was five years ago when Larry wrote his article.

Comment by Jim Gunshinan on December 20, 2010 at 10:54am

Larry Armanda, who used to call himself the "Can Man" because he spent a lot of time looking at and fixing recessed can light leaks, wrote about it for Home Energy in 2005 "Further Wrestling with Recessed-Can Lights" (Sept/Oct). He didn't find a great retrofit kit, but Builders Best and Lithonia Lighting put out some good kits for sealing the can lights. That was ten years ago, so things may have changed.

 

At our house the contractors used a non-expanding spray foam to seal the lights where the fixture meets the ceiling. (The retrofit kits have a spongy gasket that does the same thing.) Then our contractor made boxes out of foam board to insulate the can-lights on the attic side. There was one problem—the can lights with incandescent lights stay on for about two hours and then the thermal cut off switch turns them off. The insulation makes the light fixture heat up rapidly inside. Without a thermal cutoff switch, the fire danger would be pretty serious. We put CFLs in the can-lights and fixed that problem. We need a brighter light in one room, over a desk, and still have an incandescent there. It cuts off after a few hours and I take it as a signal to get away from my desk for a while! They should be CFLs that give that kind of light but we haven't found it yet.

 

Hope this helps!

Comment by dale conner on December 20, 2010 at 7:36am

Do you know of a good kit for converting the leaky lights to sealed ones? I pulled my leaky lights out of my house and replaced them with sealed lights but only because I was able to access them via the attic space.

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Home Energy Magazine posted a discussion

Let's Talk Gender

It’s no secret that home performance is a male-dominated industry. Attend any industry conference…See More
57 minutes ago
Mark Rogers added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Retrotec Blower Door Kit $1800

Retrotec Blower Door Kit complete with:DM2 Mark II digital manometer & automated fan…See More
1 hour ago
Maria Lacey replied to Jamie Kaye's discussion Flickering LED lights
"I think the tendency is to look at lamps (light bulbs) as though they're the same if they all…"
1 hour ago
tedkidd commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"Absolutely agree Ben, "How much do I use, how much do others use, and what is my reasonable…"
2 hours ago
Profile IconTauran Ivall, Alex Burnham and Annika Brink joined Home Energy Pros
3 hours ago
David Eakin replied to Jamie Kaye's discussion Flickering LED lights
"I also thought that, but I tried to put a CFL in the A-19 outside fixture at my…"
3 hours ago
Ben Jacobs commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
" I believe a major problem of government, of energy utilities, and home energy efficiency…"
4 hours ago
Jill Lindman posted an event

EEBA Houses That Work Education & Training at Johnson County Administration Building

August 22, 2014 from 8:30am to 4:30pm
About the SessionsIntro to Houses That Work: In this session participants learn how the many…See More
4 hours ago
Glen Gallo replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Title 24 requires whole house fans in zones 8-14 in the prescriptive path only. With many…"
5 hours ago
Jenn Saunders replied to Jenn Saunders's discussion iEnergyApp: Quickly generate professional reports for homeowners and get more contracts!
"Hey Tom, You are most welcome.  iEnergyApp is not free, but it is reasonable and pays for…"
6 hours ago
Jenn Saunders posted a photo

Automatically Generate Clean Simple Reports for Homeowners

Stop spending hours cropping and resizing images, formatting and reformatting a Word document to…
6 hours ago
Eric Sperline added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Beware ebay seller "supermomofps"

I bought a blower door system on Ebay from "supermomofps"  The item was never sent and…See More
6 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service