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Old 01-09-2012, 07:22 PM   #16
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Lennox G26q3/4-100 Crack?


Aire Flo is cheaply made for the economy market. See alot of them every summer and they are mostly under five years old. They seem to be the favorite of the less skilled unlicensed tech who cater to a very low end market.

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Old 01-09-2012, 07:23 PM   #17
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Lennox G26q3/4-100 Crack?


Agreed. If quiet and comfort is what you want get a two stage in the Lennox signature series. Don't think I'd go so far as to call the air flow pure crap but it's too noisy for my taste.

No sence in putting in a control board and a heat exchanger in that old G26. That will be close to a $1000 that would be better spent on a new furnace.
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Old 01-09-2012, 07:29 PM   #18
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Lennox G26q3/4-100 Crack?


Yuri; any thoughts on which York? (I believe you are a York dealer?)
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Old 01-09-2012, 07:36 PM   #19
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Lennox G26q3/4-100 Crack?


Yuri and I work for Lennox dealers. I believe beenthere is a york man.
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Old 01-09-2012, 07:40 PM   #20
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Lennox G26q3/4-100 Crack?


Marty,
Thanks; makes sense I guess with Beenthere from Lancaster and York is from York (nearby in PA)!
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Old 01-09-2012, 07:47 PM   #21
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Lennox G26q3/4-100 Crack?


If you can get your hands on a Lennox G61V 2 stage unit as very soon they are being replaced with an EL295V unit the G61V is bombproof and tried tested and true for 8 or more yrs and very dependable as any wrinkles have been worked out. Most Lennox techs know them very well also so getting an experienced tech is not hard, unlike some of the higher end mod units. York makes good units but I am not familiar with their specific models. AirFlo is a builders grade unit that works well but can be a bit noisy. Kinda like a Kia, owned by Hyundai but not to the higher end Hyundai standard.
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Old 01-09-2012, 07:58 PM   #22
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Lennox G26q3/4-100 Crack?


Thanks Yuri and everyone so far. I'll wait on Beenthere's or another York person's perspectives before moving forward.
Off to watch some TV.
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Old 01-11-2012, 01:40 PM   #23
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Lennox G26q3/4-100 Crack?


Results of my manual J using software from HVAC-Calc:
Design conditions:
Philadelphia

Indoor:
Summer temperature: 72
Winter temperature: 72
Relative humidity: 50%

Outdoor:
Summer temp: 90
Winter temp: 14
Summer grains of moisture: 102
Daily temp range: Medium

Whole House: (in BTUH)
Sensible gain: 33,974
Latent gain: 7,188
Total Heat gain: 41,162 (3.5 tons)
Total Heat loss: 50,284
Total sq ft: 1,911

If I change the Summer temp to 95*, then Total Heat gain goes to:
43,948 (3.5 ton)
42,569 with 90* and 70* indoor temp.

So, I'm assuming that a 3.5 ton unit is correct for cooling? Current Lennox is I believe 46k BTU (model HS23-461-2P).

For heating, current furnace is 100,000 90% Lennox. If the Manual J is right, then it is oversized by almost 50%, agreed?

Current suggestion from my HVAC guy is an 80k, 98% York with variable speed fan for noise reduction/comfort.

Any suggestions from you guys as far as sizing and/or models (esp. York's TM9V,T, or X or another?)?
Thanks,
Bob

Last edited by bob22; 01-11-2012 at 02:22 PM.
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Old 01-19-2012, 06:30 PM   #24
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Lennox G26q3/4-100 Crack?


Update:
The HX did have a crack in it although further back than what I could see from the burner tube opening:
Lennox G26q3/4-100 Crack?-crack-800x600-.jpg

I also saw one of the rings that popped off where the HX sides are connected lying in the bottom of the unit. You can see where the holes are that the rings are missing:
Lennox G26q3/4-100 Crack?-img_0240-800x600-.jpg

The new York unit is installed; guys did a great job and I learned first hand on how to install a unit correctly and how to make a transition boot with sheet metal from sheet stock.
Thanks to all (especially Yuri and Beenthere) who helped with the decision-making. She now has a variable speed motor, two-stage 80K unit (down from 100K) with a new thermostat that works with the unit, and a new, correctly sized A-coil. All for $3300 + $80 inspection (5 minutes: "Looks great, very nice, neat work") and $50 for the thermostat. Local utility rebates $300 for the furnace.

Last edited by bob22; 01-19-2012 at 06:35 PM.
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Old 01-19-2012, 11:58 PM   #25
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Lennox G26q3/4-100 Crack?


Quote:
Originally Posted by bob22 View Post
Update:
The HX did have a crack in it although further back than what I could see from the burner tube opening:
Attachment 44347

I also saw one of the rings that popped off where the HX sides are connected lying in the bottom of the unit. You can see where the holes are that the rings are missing:
Attachment 44348

The new York unit is installed; guys did a great job and I learned first hand on how to install a unit correctly and how to make a transition boot with sheet metal from sheet stock.
Thanks to all (especially Yuri and Beenthere) who helped with the decision-making. She now has a variable speed motor, two-stage 80K unit (down from 100K) with a new thermostat that works with the unit, and a new, correctly sized A-coil. All for $3300 + $80 inspection (5 minutes: "Looks great, very nice, neat work") and $50 for the thermostat. Local utility rebates $300 for the furnace.
that unit was over fired......
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Old 01-20-2012, 06:02 AM   #26
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Lennox G26q3/4-100 Crack?


Agreed, although it did last 17 years.

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