[RFI] High Efficience Furnaces

[dgsvetan at rockwellcollins.com]

Jim,

I have had a Rheem high efficiency (>92%) furnace in my home since late 
2000.  It's blower is not variable speed, but going by other posted 
replies, it doesn't sound as if a variable speed blower is a major RFI 
issue -  at least for the makes and models given.  I can vouch for the 
fact that, as K9RB just stated in his post, you will get a staccato effect 
on your HF rigs for a few seconds when the igniters fire.  In my case, 
it's only about an S-3 issue.  Interestingly, when the electronic igniter 
on my A. O. Smith water heater fires, I get no detectable noise at all in 
the radio. 

I hope you have natural gas, not propane.  I can tell you that with 
propane, which is what I am forced to use, the sensors get soot deposits 
and require periodoc cleaning.  Yes, my burners are set for nice blue 
flames.  Maybe my propane supply leaves something to be desired, but other 
than the sensor cleaning, I am happy camper.

73, Dale
WA9ENA





Jimk8mr at aol.com 
Sent by: rfi-bounces at contesting.com
07/19/2007 08:41 AM

To
rfi at contesting.com
cc

Subject
[RFI] High Efficience Furnaces






Before it gets cold again I will likely be replacing my old gas  furnace. 
I 
am looking at the high efficiency models, probably one with  just a two 
speed 
blower rather than a variable speed one.
 
Any RFI experience with these furnaces, any good brands or brands to 
avoid, 
etc.?
 
 
73  -  Jim   K8MR



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