Wondering which HiEff furnace to buy

[AltaGraham]

Have quotes on Lennox G71P, Ruud Ultra 90, Bryant plus 90i & kenmore 76141, all are supose to be Hi eff, wondering which might be the best way to go & if some have more problems with them, I want which ever i chose to have a vs dc fan motor, or is there another one out there I need to look at

[beenthere]

Check into a York Mod furnace, 95% AFUE, its available with a VS blower.

[Twilly]

Rheem Mod, Twilli has it in his trailer

[2old2rock]

Most manufacturers have high efficiency furnaces and VS blowers. Find a real good installer. It's more important than brand. Although some around here have their preferences, the nameplate on the unit doesn't trip my trigger.

[cold in alberta]

Have quotes on Lennox G71P, Ruud Ultra 90, Bryant plus 90i & kenmore 76141, all are supose to be Hi eff, wondering which might be the best way to go & if some have more problems with them, I want which ever i chose to have a vs dc fan motor, or is there another one out there I need to look at

e-mail me,e-mail in profile

[flange]

The york line which includes luxaire and coleman have a 67 step modulating gas valve in the higher end unit, most of the others have a two or three step valve that I am aware of. The furnaces you listed as well as others will work well. You should be buying comfort not price if you are looking at this product. That means you need to find a good contractor in your area and work with him to determine what is best for you.

[plexus]

take a look at the rheem modulating. thats what i am going with. i wish i had mine installed so i could tell you about it first hand. but after looking at many brands i decided on the rheem for these reasons:

- spark ignition that is reputed to be very reliable (HSI needs to be replaced not and again and even more often if there is contaminants in the air)
- modulation should increase comfort level - it just makes sense to me that a furnace should vary its output based on heat loss at a given time. after realizing thing the idea of an on-off single stage or double stage seemed less effective
- stainless steel primary and secondary heat exchangers with lifetime limited warranty
- 11 year pretty reliable track record, i am told on this forum
- 10 year transferable parts and labour warranty

[docholiday]

Plexus, just so you know the factory HX warranty is for a new furnace, the others only give a heat exchanger.

You'd be hard pressed to find a dissatisfied Rheem/Ruud Mod customer in that 11 years.

[21degrees]

I would go with Carrier Infinity 95%, the quiestest furnace money can buy. Where are you located. If you need more information go to my profile and email me.10 year parts and labour
Have quotes on Lennox G71P, Ruud Ultra 90, Bryant plus 90i & kenmore 76141, all are supose to be Hi eff, wondering which might be the best way to go & if some have more problems with them, I want which ever i chose to have a vs dc fan motor, or is there another one out there I need to look at

[hvaclover]

Westinghouse 2 stage 95% with vs blower.

10 years parts warranty

10 year replacement warranty on furnace if heat ex fails
and a labor allowance to pay for installation.

I still submit if the mods are so robust that everyone would be making one.

So far all we got are Rheem and York. Both have had their own dogs in the past.

Who remembers Triathlon and the the 90% drum ht ex?

[beenthere]

Lennox now has a mod.
Carrier has what the call a mod.

[hvaclover]

Ok that make three and 1/2,

Still hardly industry wide.

[beenthere]

Give it time. The rest will follow.

In the next 2 to 3 years, it will be harder to find a manufacturer, that doesn't have a mod, or some thing they claim is a mod.

I think Trane is suppose to be coming out with a 3 stage.

[hvaclover]

Just Googled the Lennox you mentioned been, Varies capacity fron 40% to 100%?

Doesn;t like a true mod. JMO.

[beenthere]

From the Lennox web site. 1% increments, from 40 to 100 percent.

Sounds like a mod. JMO.


Home Comfort

* Precise Comfort™ technology - Automatically adjusts heat and airflow capacity in increments as small as 1% for the ultimate in temperature control
* AirFlex™ technology - Offers custom settings which can be selected to meet each home's specific year-round comfort requirements
* Zoning - Compatible Design - Works with Lennox' Harmony III™ zoning system to deliver the right amount of comfort for up to four zones
* Variable Speed Blower Motor - Provides a quiet, consistent flow of air for enhanced temperature and humidity control
* Variable-Capacity Operation -Goes beyond typical low and high two-stage operation, varying output from 40% to 100%

[21degrees]

It is a 3 stage 3 set points, it will maintain 3/10ths of a degree for comfort, modulation is over kill. Potential problems and it is overated.
From the Lennox web site. 1% increments, from 40 to 100 percent.

Sounds like a mod. JMO.


Home Comfort

* Precise Comfort™ technology - Automatically adjusts heat and airflow capacity in increments as small as 1% for the ultimate in temperature control
* AirFlex™ technology - Offers custom settings which can be selected to meet each home's specific year-round comfort requirements
* Zoning - Compatible Design - Works with Lennox' Harmony III™ zoning system to deliver the right amount of comfort for up to four zones
* Variable Speed Blower Motor - Provides a quiet, consistent flow of air for enhanced temperature and humidity control
* Variable-Capacity Operation -Goes beyond typical low and high two-stage operation, varying output from 40% to 100%

[beenthere]

I know Carrier is a 3 stage. Thats why I said, What they call a mod.

[hvaclover]

From the Lennox web site. 1% increments, from 40 to 100 percent.

Sounds like a mod. JMO.


Home Comfort

* Precise Comfort™ technology - Automatically adjusts heat and airflow capacity in increments as small as 1% for the ultimate in temperature control
* AirFlex™ technology - Offers custom settings which can be selected to meet each home's specific year-round comfort requirements
* Zoning - Compatible Design - Works with Lennox' Harmony III™ zoning system to deliver the right amount of comfort for up to four zones
* Variable Speed Blower Motor - Provides a quiet, consistent flow of air for enhanced temperature and humidity control
* Variable-Capacity Operation -Goes beyond typical low and high two-stage operation, varying output from 40% to 100%

Thank you for filling me in on that. I get enough industry publication that I should have known that.
Did they have an official Ad Campaign presentation in the news to roll this product out?

Don't the other mods have a wider range of capacity?

[beenthere]

Rheem/Ruud 13 steps of modulation. Stat controled.
Yotk/Luxaire 65 steps of modulation. Furnace board controled.

[mayguy]

From the Lennox web site. 1% increments, from 40 to 100 percent.

Sounds like a mod. JMO.

Been,

Lennox does not used a true mod stat, either singe stage stat and timed on stages, or two stage stat where on 2nd stage, the furnace will fire up to whatever % that the stat switch back to 1st, the burner stays locked in that % till the stat no longer calls for heat, then it shuts down. Lennox does not fall back in % like Rheem Mod, or York.

Trane uses 3 stage stat (IAQ stat) and it's a true 3 stage..

[beenthere]

I didn't say it leans both ways :)

I'm not busting on anyones mod,(except maybe Carrier :) ), or 3 stage furnace.

hvaclover, just didn't think alot of manufacturers were making units with more the 2 stages or steps of heating.

[hvaclover]

I didn't say it leans both ways :)

I'm not busting on anyones mod,(except maybe Carrier :) ), or 3 stage furnace.

hvaclover, just didn't think alot of manufacturers were making units with more the 2 stages or steps of heating.

HEY!I knew Goodman has a three stage!:rolleyes:

[beenthere]

HEY!I knew Goodman has a three stage!:rolleyes:
They do ?

[DanW13]

Why is Carriers Modulating furnace not really a Modulating furnace ?? I looked at the Lennox furnace and it looks very much like the Carriers insides just a different configuration with basically the same parts. Those other brands of mod furnace's who claim they have 7, 9, 20, steps of modulation or what ever they claim to have all modulate in the last 10% of the furnaces full compacity where they divide up that 10% or so and increment that 10% into 10 or 20 increments and they call it a modulating furnace !! So what makes theres a true modulating furnace as opposed to Carriers ?

[beenthere]

Can't say for sure where the Lennox begins its modulation.

But I can tell you, your way off on were and how the York modulates. If it modulated the way you said, there would be a host of complaints from owners of the York mod.
Guess you don't know, the York mod, modulates back down after teh thermostat stops calling, any time it exceeds 54% of its max firing rate?

Yorks 65 steps are from 35% to 100%.

[21degrees]

I have worked with full modulation, These all have set points, waste of good money. You and I would never notice the difference in comfort compared to lennox or Carrier. I have no idea why they call them modulation and not 3 stage. It is like a Dc motor instead of split capacitor or rectified motor. Wording can be misleading.

[beenthere]

Then what is your definition of modulating?

[21degrees]

When you don't need set points and will modulate from 0% to 100%. We use them alot in refineries and steam lines.
Then what is your definition of modulating?

[beenthere]

Then your splitting hairs.

[docholiday]

Its fun to watch them all chase the Rheem mod. Yet they still have an achillies heel, HSI.

[beenthere]

Its fun to watch them all chase the Rheem mod. Yet they still have an achillies heel, HSI.
LOL... Yea, HSI does bite.

[hvaclover]

There was a furnace several years ago that had a true modulation form of operation.

The capacity of the burner was controlled by a sensing bulb in the return air.

The sensing bulb was connected to the gas control and would increase and decrease gas volume astemp rose and fell in the return air.

No set points. Just genuine modulation.

[21degrees]

No need for modulation 3 stage is more than sufficient in my opinion. I am in no way chasing rheem/ruud, I can sell them tommorow if I want to. No interest but thanks anyway.
Then your splitting hairs.

[21degrees]

?????????:confused:
LOL... Yea, HSI does bite.

[21degrees]

What are you talking about HSI
Its fun to watch them all chase the Rheem mod. Yet they still have an achillies heel, HSI.

[beenthere]

Hot
Suface
Ignitor

Spark is more reliable.


In residencial no one needs 2 stage, let alone modulation. Its a comfort feature.

[21degrees]

It has been over 2 years now and not 1 HSI probleman, Nothing like talking about pass. People want to know about present. Can you do me a favour and let doc know. Since when is spark more reliable, I have had my fair share of problems with them.

Spark is more reliable.


In residencial no one needs 2 stage, let alone modulation. Its a comfort feature.[/QUOTE]

[hvaclover]

Hot
Suface
Ignitor

Spark is more reliable.


In residencial no one needs 2 stage, let alone modulation. Its a comfort feature.

???????

Are you saying that 2 stage should not be used and that a standard 90% will suffice.

I got ten customers ;all 2 stage 95% VS furnaces and they notice the diff in comfort, especially on the ac side.

HSI is just as good as spark.

[plexus]

LOL... Yea, HSI does bite.

thats one reason i went with the rheem. also both HXs are SS. better warranty too.

[docholiday]

It has been over 2 years now and not 1 HSI probleman, Nothing like talking about pass. People want to know about present. Can you do me a favour and let doc know. Since when is spark more reliable, I have had my fair share of problems with them.

Spark is more reliable.


In residencial no one needs 2 stage, let alone modulation. Its a comfort feature.[/QUOTE]

I doubt you have had too much trouble with Direct Spark, maybe spark to pilot but not DSI. You may also have some difficulty getting a whole lot to agree that HSI is significantly more reliable than it has been historircly. Good luck with it if it's working for you though.

[beenthere]

DSI, gives less trouble then HSI. Are you saying you replace as many ingnitors for spark, as you do for HSI.

[beenthere]

???????

Are you saying that 2 stage should not be used and that a standard 90% will suffice.

I got ten customers ;all 2 stage 95% VS furnaces and they notice the diff in comfort, especially on the ac side.




No, I did not say 2 stage shouldn't be used.
I said no residential really NEEDS 2 stage, or mod. I never said 2 stage doesn't provide more comfort then single stage..

My response was to 21, when he said no need for mod, 3 stage is enough.

[beeneeb]

Check into a York Mod furnace, 95% AFUE, its available with a VS blower.

Ever seen the training that York puts out for its mod furnace?

http://www.youtube.com/watch?v=osc-QvzHZZM

[hvaclover]

Ever seen the training that York puts out for its mod furnace?

http://www.youtube.com/watch?v=osc-QvzHZZM

Beeneeb?

Naw. Can't be related:D

[beenthere]

Ever seen the training that York puts out for its mod furnace?

http://www.youtube.com/watch?v=osc-QvzHZZM
I didn't see that DVD. I was at the seminar.

Have you installed any yet.

[beeneeb]

I didn't see that DVD. I was at the seminar.

Have you installed any yet.

Never installed...However, I have worked with them to an extent. It's a great product and it's one of the only truly modulating gas furnaces in the industry. It's basically 65 stages, unlike other competitors. If you haven't seen one in action, they're fun to watch.

[beenthere]

Installed and serviced them. :)

Had one, that kept locking out on PS not closing evry 2 days or so. Took a while to find a small crack in the seam of the trap. Right where it was glued together.





PS: I set the stats to 3 or 4 CPH instead of the factory recommended 6.

[beeneeb]

Installed and serviced them. :)

Had one, that kept locking out on PS not closing evry 2 days or so. Took a while to find a small crack in the seam of the trap. Right where it was glued together.





PS: I set the stats to 3 or 4 CPH instead of the factory recommended 6.

Seen the new 33" furnace from York yet? http://www.yorkupg.com/NewInfo.asp?id=2831&t=r&PID=5

[beenthere]

The brochures and specs only so far.

[addamsmasher]

Try looking at the new Carrier 58MVC furnace. The only word of caution is that it has just recently been released so it might still have "bugs" to be worked out. In a nutshell it is a condensing furnace with a 3-stage gas valve with a variable speed indoor blower motor.

[beenthere]

Its still just a 3 stage furnace.