On 10/29/2013 8:53 AM, cln wrote:
My 18 year old house has a combination Wood and Electric pushed air furnace.

I'll start a fire and eventually the fan
starts... typical and expected.

I question what follows. The fan will run for
1 to 2 minutes. In the beginning the ducts barely
have time to warm up so the air isn't hot when it
comes out.
After a few minutes, the fire is roaring and
produces plenty of heat. I even added a tiny 4"
fan on the flue pipe to propagate the heat in my shop.

So if this 4" fan is enough to make a small
difference in my shop, why isn't the furnace
running longer at times?

I had the furnace inspected last winter/spring
time. A fuse had popped. He checked it over and
said there was nothing wrong with it.

Is there something I can do? I asked if the fan
could be upgraded to a two speed fan. I figured
that it could run on a lower temperature.


Any advice appreciated.


My last DIY thought was to attach 2x 4" fans on
the duct outlet in my shop and having it on a 4-6
hour timer. Fans were free and both would cover a
loor vent type duct elbow nicely... this way less
of the heat would be wasted up the flue

Sounds like you need a fan limit switch. Temp activated, blows when
there is heat. I'd make some phone calls, and see if you can find a
different repair tech.

--
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Christopher A. Young
Learn about Jesus
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