Don't burn down your home with those electric heaters!

By
Home Inspector with Perfection Inspection, Inc.
http://activerain.com/droplet/4fP4

A few years ago a little company was producing a neat little electric wall heater that was easily installed, relatively inexpensive and allowed wonderful zonal heating (read-"energy efficient")!

Things were wonderful for sometime but like most things there were a few issues with the first models. The little electric heaters were made by the Cadet corporation and after the release to the general public it was discovered that if housekeeping was not top notch these little heaters had the tendency to overheat (read-"catch on fire" and there could be "flames, sparks or molten particles spewing through the front grill cover of the heaters into the living areas")!

The problem arose at the heat exchanging point. This is the point in every heating device where the heat that is produced in the heating device is transfered or "exchanged" to the medium that will carry heat to the home. The little wall heaters used fans to transfer heat directly to the home's air through convection.Heat transfer of convection to describe problems with cadet heaters

The more surface area that the heating device can have exposed to the house air the better the transfer of heat. The more volume of air flows through the device the better transfer as well. There is a point between these two conditions where a balance between the two is chosen.

The little wall heaters that were brand new, met both of those expectations very well. Lots of heating elements (red hot wires) exposed to the air and the little fans did a very functional job of moving a large volume of air over the heated electric coils.

To prevent the red hot wires from getting dirty, which would insulate the heater elements from the air, hampering the exchange of heat, a small screen was placed in front of the fan. The little screen did a good job of keeping the elements clean, too good of a job.

The screens, especially in dusty areas or homes with pets became plugged very quickly. Even with the label on the side stating, "clean the heater fins every month," these screens and heaters got neglected.Recalled cadet wall heater showing the vulnerability to over heating and fire in during a Salem Home Inspection

Although the heaters had wonderfully clean elements, the flow of air had been destroyed by the plugged screens. The thermostats didn't know about the restriction of air and kept asking for heat. The elements got hotter and hotter as very little house air was able to flow over the elements to absorb the heat. This occurred over and over until the unit or the wall or both caught fire.


This is not new information as the CPSC noted the recall in Jan 1999. However, I still see the dangerous units in homes that I inspect around the Salem area.

The moral of this tale is; while we are in our friends, family and neighbor's homes this holiday season we should keep our eyes open for these dangerous units. We should mention the recall to our hosts if we notice the electric wall heaters.

The way to determine if the units are dangerous is the model number.  You should look for: models FWFXLXTKZAZRARKRLXRXRW and ZC

The model number should be on the inside of the unit and behind the front panel.  At the risk of being like me, "that annoying home inspector guy," you should try to locate the serial number without removing the panel.  I have learned that it is rude to take out a screw driver and start removing panels during a dinner party!  Also there is that little thing of high voltage live wires behind the panel and people wondering how much you have had to drink.....


At the very least, you have a conversation starter for those awkward

moments during the parties......

Where to find the cadet wall heater model number for the recall verification on a Salem Oregon home inspection

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Rainmaker
596,715
Todd & Devona Garrigus
Garrigus Real Estate - Beaumont, CA
Broker / REALTORS®

Jim - I love finding posts like yours here. They inform me and in this case could save me a lot of grief, or worse! Thanks! I am off to check my heater...

Jan 22, 2011 04:33 AM #1
Rainmaker
1,286,601
Li Read
Sea to Sky Premier Properties (Salt Spring) - Salt Spring Island, BC
Caring expertise...knowledge for you!

Wow...a great "alert" for all of us!

Jan 22, 2011 05:18 AM #2
Ambassador
1,315,160
Charles Buell
Charles Buell Inspections Inc. - Seattle, WA
Seattle Home Inspector

Jim, good post---I still find a fair number of these too.  Even if you see ones that look "newer" from this time period it is a good idea to look a little closer as I have found old recalled ones with new covers on them.

Jan 22, 2011 05:31 AM #3
Rainmaker
176,535
Jim Allhiser
Perfection Inspection, Inc. - Salem, OR
Salem, Oregon Home Inspector

Garrigus-  There is definetly a wealth of information in this group.

Li-  Thanks, You and I are in a prime part of the world to see these offeners.

Charles-  ooh, that is very tricky Charles!  I always remove the covers and have not seen this yet but I will look from now on!

Jan 22, 2011 06:08 AM #4
Rainmaker
130,324
Mel Wagner
Knipe Realty - Salem, OR
Principal Broker/Agent Salem Oregon Real Estate

Jim-great information for all home owners.  Many people do not know about the recall.  Thanks for providing such good information, as usual.

Jan 22, 2011 07:36 AM #5
Rainer
40,155
Dale Ganfield
Leland, NC

Hi Jim, great post.  I will keep an eye out for the Cadet heaters.

Jan 22, 2011 09:04 AM #6
Rainer
478,183
Not a real person
San Diego, CA

Just stopping by to invite you to the 2nd Annual ActiveRain Super Bowl Party. Hope you’ll come and bring some friends!

Feb 06, 2011 12:37 PM #7
Rainmaker
90,835
Rosi Green
AmeriTitle - Silverton, OR

That freaks me out!  I have a couple "zone" heaters in my house.  You are welcome to come to any dinner party with your screwdriver and tell me if I'm going to burn my house down.  And clean them every month?  Yikes... I think ours are going on 5 years old and I've cleaned them every...never.  I'll add it to my honey-do list.  Thanks for the post Jim.  And MISS you!  Haven't seen you in ages.

Feb 14, 2011 09:24 AM #8
Rainer
478,183
Not a real person
San Diego, CA

Happy Thursday!

Aug 18, 2011 05:10 AM #9
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Rainmaker
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Jim Allhiser

Salem, Oregon Home Inspector
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