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Old 12-30-2012, 08:56 AM   #1
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Heil furnace questions


Had a company come out and inspect the furnace. He said that both fan motors bearings are leaking because there is dust on them and that the heat exchanger is cracked.

The house and furnace are 12 years old, the heat exchanger was replaced in 2007 by the same company that did the inspection.They have also came out a few other times and fixed various minor things.

I can easily replace the fan motors if they even need it. My concern is how hard is it to replace the heat exchanger?

I am starting to think Heil is junk as before this I have always had "lower quality" equipment, Colman etc. and never had as many problems or expenses that this heil system has provided.

This system is used in conjunction with a Life Breath HRV also.

Any direction would be appreciated.
Willis


Last edited by shoothebunnies; 12-30-2012 at 09:20 AM. Reason: additional details
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Old 12-30-2012, 09:10 AM   #2
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Heil furnace questions


I think if the heat exchanger has to be replace again I be see if its the right size for the house. It maybe over size but same time if you don't change filter alot it can crack too. You may be better off replace system before doing another heat exchanger.

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Old 12-30-2012, 09:17 AM   #3
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I would certainly obtain a second opinion....
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Old 12-30-2012, 09:24 AM   #4
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Filters are changed monthly, try to do it on the first when I pay the mortgage but like everyone sometimes it is a day or two late.

Merv 8's were used up until June of last year then switched to 11's. Duct's cleaned in 2007 as well.

If anyone needs more info please let me know.
Willis
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Old 12-30-2012, 09:28 AM   #5
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What is the btu on the furnace and what is the sq. feet of the house
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Old 12-30-2012, 09:28 AM   #6
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Upflow or downflow?
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Old 12-30-2012, 09:28 AM   #7
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Sounds like your using a "lower" quality service company. And they are just trying to sell you thinks you don't really need.

If the heat exchanger is cracked again, need to find out why. most likely reason would be poor air flow.
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Old 12-30-2012, 11:21 AM   #8
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Please don't blame heil I love that brand and personally I would not install anything in my house that wasn't a heil. I say get a second opinion on the heat exchanger. Ask them what kind of test they are doing on it. If they say the water test it is the wrong answer. Many service techs never learn this but the water test is not accurate on clamshell type heat exchangers ( which is what heirs are) because they are meant to have a negative pressure in then and to pull in air from seems on the HE and water too if it is placed there. However it does need replaced heil has a lifetime warranty on Heat Exchangers
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Old 12-30-2012, 06:58 PM   #9
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Here are the specs for the furnace.

Up-flow furnace

Square footage of the house is right about 3200.
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Heil furnace questions-furnace-specs0002.jpg  

Last edited by shoothebunnies; 12-30-2012 at 07:04 PM. Reason: additional details.
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Old 12-30-2012, 08:50 PM   #10
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Measure the heat rise to see if it falls within the 45 - 70 degree design range. If you regularly exceed the designed rise it can drastically reduce the life of the heat exchanger.
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Old 12-31-2012, 03:01 PM   #11
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inner city products are not that bad..like other companys ...if equiptment is not set up right at install...it will not last...as mentioned I would question the service company...if heat exchanger was replaced in 07 i find it hard to believe it needs replaced again...unless when it was replaced... again it was not set up right..which leads back to the same company that now wants to replace it again or install a new one.....GET A SECOND OPINION FAST... sorry ben sr
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Old 01-15-2013, 06:52 PM   #12
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Quote:
Originally Posted by chitownken View Post
Measure the heat rise to see if it falls within the 45 - 70 degree design range. If you regularly exceed the designed rise it can drastically reduce the life of the heat exchanger.
Checked the rise at both of the canvas connections. 127.4 supply 74.1 return. Heat rise of 53 roughly.?

Return duct is 10x26 The furnace sits on the floor and the pan has not been removed for extra return.

100,000 btu furnace

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Old 01-16-2013, 09:00 PM   #13
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Is the return duct adequate?
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Old 01-16-2013, 09:17 PM   #14
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Your air temp rise would indicate that it is moving enough air. So the return should be ok.
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Old 01-16-2013, 09:54 PM   #15
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Your air temp rise would indicate that it is moving enough air. So the return should be ok.
Would that also mean that it is not overfiring?

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