View Full Version : Gas furnace (A touchy subject)
stinkmeaner
01-21-2010, 09:52 PM
Hi everyone,
I'm looking to buy a two stage 95%+ AFUE gas furnace (possibly with variable speed and 111,000+ BTU) for my mom. I was wondering if any of you professionals would let me know the difference in price between some major brands. I've narrowed it down to Lennox, Rheem, or Carrier (Comfortmaker).
You don't necessarily have to tell me the price, as I know most of you don't like to give that info away. However, if you could tell me a dollar amount difference, I'd appreciate it. For example, you could say:
Rheem is about more than Lennox and Lennox is about more than Carrier (this is just an example with made up numbers).
I know how much a Lennox G61MPV 60C-111 (111,000 BTU) will cost installed (I was quoted ). I was also quoted for the G61MP 60C-111 (). I was told that variable speed motor runs on DC power at about the power of a 75 or 100 watt light bulb while the AC powered motor takes up so much more power. How much more?
We're trying to replace our old Lennox G8-165C (132000 BTU capacity). This was installed in the 70's or 80's.
The installer insists the the newer, lower BTU Lennox's will work just as well without it over working. Is that true? Anyone think I'm paying too much?
Gunnery Sergeant Hartman
01-21-2010, 09:59 PM
Did you read the rules???
beenthere
01-21-2010, 10:02 PM
I removed your prices.
Questions and discussions pertaining to HVAC for the home. No pricing, no DIY, Thank You.
Please read Site Rules (http://hvac-talk.com/vbb/showthread.php?threadid=1241) Thank you.
aintitfun
01-21-2010, 10:15 PM
x
troutfly
01-21-2010, 10:37 PM
For equipment that is actually comparable, Say a 3 ton 16 seer Rheem A/C for example compared to a Lennox of the exact same tonnage and efficiency, there is going to be very little difference in cost between any 2 brands.
I don't know how to put that cool box around a quote so i'll just say this...if you want comparable quotes theres gonna be a large diffrence b/t a Trane and a Goodman may not be so large b/t a Trane and a Lennox.Buy the most efficient,brand name system,installed by a reputable company,u can fit into your budget.I guarantee u will remember this statment down the road a year or so if your heat is out and its 15 deg. and u are calling us to fix your cheap furnace cause the jacka__ who installed it wont anwser your plea for help....
beenthere
01-21-2010, 10:40 PM
Actually. Even same efficiency Trane to Carrier can have a big price difference.
And that is why we DON"T talk prices here.
troutfly
01-21-2010, 10:47 PM
Thx big guy for fixing my post,i think u pretty much wrapped up this thread......
beenthere
01-21-2010, 10:51 PM
Trout
look at the top of the quick reply box. The yellow icon with writing in it. Is the wrap in quote tag you want.
aintitfun
01-22-2010, 08:38 AM
Well, Goodman costs more than Rheem/Ruud in every scenario in our pricing, not by "alot" how ever much that actually is.
CynicX
01-22-2010, 09:00 AM
Yes, the V = Variable Speed Blower motor. And yes they are much more efficient then your standard motor. However they are very expensive and while the dont go bad too often it has to be setup properly. If not it will work itself to death in short order.
You NEED to have a size load calc done. First off, a more efficient furnace with the same input as a lower efficiency furnace will have a higher output. Example 100k BTU input with a 70% furnace = 70,000 BTU output. With a 90% furnace = 90,000 BTU output.
But like I said you NEED to make sure the house requires that much heat to begin with. Back in the 70-80's not a lot of heat load calcs were done and a lot of stuff was oversized.
A properly sized furnace will be more efficient to run, quieter and make the home more comfortable from temp swings and even temps throughout the home.
That is the function of 2 stage furnace. Run on first/low stage for longer run times to make the house more comfortable.
Dont pick brands, pick contractors. The equipment is only as good as the company that installs it. I like Lennox and Carrier, it depends on the application that I would choose one or the other. But who cares what I like, if the Rheem guy does the best work then thats the way to go...
BaldLoonie
01-22-2010, 12:26 PM
Actually AFUE and output aren't related on lower efficiency machines.
A relic 55-60% model will typically have a steady state output at 80%. Or in the old days, they'd call it bonnet capacity. So even if you have an ancient 100K furnace, it would be putting out around 80K once warmed up even though it was a gas hog.
stinkmeaner
01-22-2010, 12:45 PM
I removed your prices.
Questions and discussions pertaining to HVAC for the home. No pricing, no DIY, Thank You.
Please read Site Rules (http://hvac-talk.com/vbb/showthread.php?threadid=1241) Thank you.
OK. Sorry about that. I didn't know. As for DIY, I'm not suicidal. I know better than that.
beenthere
01-22-2010, 02:31 PM
Well, Goodman costs more than Rheem/Ruud in every scenario in our pricing, not by "alot" how ever much that actually is.
Thats the same company.
Another company may charge less for a RheemRuud then you do for a Goodman.
aintitfun
01-22-2010, 05:21 PM
Well, I m done talking in circles, this thread was doomed from the get-go.:deadhorse:
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