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

George J. Nesbitt posted an event

High Performance Windows - A Panel of Experts at Pyramid Alehouse`

April 26, 2014 from 3pm to 5pm
Join a lively panel discussion on high performance windows. We'll cover some basics, as well as…See More
49 minutes ago
Kaushal Bharath Raju replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Hi David, Thanks for pointing out Martin Holiday's article. I do not wish to engage in the…"
1 hour ago
Profile IconAdam Penberthy, Scot Davidson and j jarvella joined Home Energy Pros
1 hour ago
David Eakin replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"More food for thought on this subject - read this (fairly) recent blog by one of the most respected…"
6 hours ago
Curt Kinder commented on Christopher Morin's blog post 5 Things New Energy Efficiency HVAC Contractors Need to Know
"You left out air distribution...Without at least a passing glance at how much air moves through the…"
12 hours ago
David Eakin replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"I mis-spoke - I was referring to the Midori House in Santa Cruz. Have an in-depth discussion with…"
17 hours ago
Kaushal Bharath Raju replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Hi David & Bud, $400/sqf > $300 sqf. The latter is the minimum cost of new construction in…"
yesterday
David Eakin replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Kaushal, There was a deep energy retrofit upgrade project (to Passive House standards) in San Jose…"
yesterday
Kim Tanner updated an event

Beyond Residential Testing at The Energy Conservatory

May 14, 2014 to May 16, 2014
The Energy Conservatory (TEC) is hosting a Beyond Residential Testing event. In addition we are…See More
yesterday
Casey Gesell posted a video

Super Attic - Attic Insulation System

http://www.drenergysaver.com | 1-888-225-6260 The new Super Attic: Advanced Conversion System -- converts your attic from a vented attic into an unvented at...
yesterday

Casey Gesell just added their location.
(via Member Map)

yesterday
H.O. Electric posted a video

H.O. Services, Generator, Electrical, Plumbing, Heating, Cooling, Belmont, Lexington, Arlington, MA

H.O. Services is your residential Electric-Plumbing-Heating-Cooling Specialist. We are an electrical contracting company providing homeowners the best Electr...
yesterday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service