Question about Emerson Lennox Ducane Armstrong Furnace Blower Motor K55hxkpy-9740

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My 2002 vintage Lennox low boy oil warm air furnace has a hot spot and paint discoloration on the cabinet exterior abutting the heat exchanger. The opposite side of the exchanger are is cool. My service guy said it is normal, but Im not convinced.

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Posted on Aug 03, 2014

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Posted on Jan 02, 2017

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Renting and Paying the Gas Bill


This past week I changed out an old hot air furnace in a rental unit that made me question why the tenant did not go to the owner and offer to pay more rent in exchange for getting the furnace changed out sooner. If you are a renter that is paying the gas bill, then you need to think about this.
The hot air furnace was at least 60 years old. It had been coal fired furnace that was converted to gas many decades ago. The pilot light of this beast was more of a torch than a pilot light. When the thermostat called for heat the flame roared for 15 minutes before the exterior blower unit that was added when the furnace was converted to gas, started up to move air through the furnace and into the house.

As I was starting up the new unit, which took up less than 1/3 of the space of the old beast, the renter came and sat down on the basement steps looking on in amazement. How would that little thing make enough heat for the house? A few minutes later those questions were put to rest very quickly.

After starting the new furnace and burning off the oil that always smokes up the house a bit on a new startup the new little unit had the house warm as toast and was shutting down. Wow, that took less time than the old beast took to just warm up!

The renter related to me how that the old furnace cost over one hundred dollars a month just to run the pilot over the summer months. The wintertime heating bills were many times higher than that. The difference between the bills of the old unit and the bills that will be coming now will be unbelievable. A savings of 40-50% is not at all out of the question.

Now, if you are renting and are paying the bill to feed an old monster of a heating system, I suggest that you make a proposal to your landlord. Offer to pay a bit more rent in exchange for a new heating system. Not only will you decrease your gas bills enough to pay some extra rent and still come out ahead, but you will have the peace of mind that you have a safer heating system under the roof that you also live under.

on Dec 07, 2009 | Heating & Cooling

2 Answers

How do heat exchangers work?


The heat exchanger is a thin metallic component of a fossil-fueled furnace whose purpose is to transfer heat from the gas or oil buning on one side of the sealed chamber to the air passing across and coming in contact with the other side of the sealed chamber. By 'sealed' I mean the burning gasses do not come in contact with the air that circulates within the living space.

Mar 11, 2015 | Heating & Cooling

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Is 32c a normal temp for an exhaust on a force air high efficiency house furnace? This is the air temp that goes outside after heating the plenum. Is there a lot of heat going up the "chimney"??


Any furnace providing heat where it should and has little to no heat from its exhaust is doing a GREAT job ;-)

Our high efficiency gas furnace was installed with a PVC pipe as a 'chimney' which bothered me to no end until I found the surface temp of that plastic pipe only barely warm to the touch- that is a home run!

Jan 09, 2015 | Emerson Lennox Ducane Armstrong Furnace...

1 Answer

About once a week, I have to unplug the bottom end of the condensate tube on my high efficiency furnace and let the water out, then do a reset so the furnace will run. Why is this happening and how do I...


Condensate drain plug? New to me. Remove the plug and put a 5 gal. bucket to catch the water and remember to drain the bucket, so the furnace won't trip.
When hot plenum is not set hot enough, moisture will condensate on the heat exchanger. This moisture is acidic. It could be your hot plenum temperature needs to be raised to avoide frequent moisture problem.
By the same token, heating and air cooling removes moisture from the air and air needs moisture to feel warm or cool. Dry air is not desired.

Jan 05, 2015 | Heating & Cooling

1 Answer

How do i get even heat thru out the house with a daka wood stove


http://www.hearth.com/talk/categories/main-hearth-forums.4/
You burn wood, and smoke goes up flueway.
You're not running chimney smoke through ductwork so you have a heat exchanger.
What kind of heat exchanger?
probably air since you're running through ductwork?
How much hot air or hot water is coming off heat exchanger?
How big of a space can be heated with that amount of heat?
Is the exchanger located in optimal location?

Considerations.
One room log cabin with fireplace will not stay very warm.
One room house with big wood burning stove in center, with hot flue pipe running across the room and exiting on far wall, will get warm-hot, but will cool off fast.
Why?
Because the BTU output of firewood is much less than electric, coal, oil, or gas.
Otherwise they would have made wood-burning steam locomotives. But the locomotive boiler cannot get hot enough with wood ... the boiler needs coal to produce enough BTUs to boil water fast enough to rotate the turbine and turn the wheels.

Maybe your wood stove output should be measured.
Don't forget a huge percentage of fire heat goes straight up flueway.

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I have a lennox 2 stage gas furnace and a lennox XP15 heat pump controlled through the Lennox 7000 touchscreen thermostat. I want to disable the heat pump due to excessive noise due to lower temperature...


At tstat press options. Press installer setup. Yes, you are qualified. System settings, non heat pump. Gas/ oil heat. Save changes. That should do it with no wiring changes.

Jun 18, 2017 | Heating & Cooling

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Very loud induced draft furnace


when you tighted it it very well could have done damage to the motor or you could have it off kilter 1 of the 2

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Air not warm enough


You need to verify gas input pressure with a gas pressure test kit and also check heat exchanger for soot build up.

Dec 01, 2008 | Heating & Cooling

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