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Old 09-20-2009, 10:38 AM   #16
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Beenthere is right. I would buy the Lennox G61V and a XC13 A/C and spend the rest of your $$ on a HRV for ventilation http://www.lennox.com/pdfs/brochures...entilators.pdf
The Lennox HRVs are made by Lifebreath. Best to have it installed during construction so you can have the proper ducting for it installed and have a dedicated system for it.

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Old 09-20-2009, 11:18 AM   #17
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If you use the a/c from mid may to mid sept, you might want to consider a heat pump either coupled with an electric furnace or with a two stage gas furnace. It is likely that the h.p. would be used to heat the house as well, and the appliance would be used about six -eight months of the year.
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Old 09-20-2009, 11:32 AM   #18
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Variable speed fans (ECM) save LOTS of $$ in electricity vs the PSC if you use it for continuous air circulation and in general. They add 1 SEER rating to a furnace/AC pkg. Your average PSC uses about 360 watts continuously and the ECM 80 watts. Saves about $275/yr in electricity where I am. The cost of the motors is coming down and they have ball bearings /better quality motor. There are some other advantages like constant air flow/static pressure which a standard motor does not have.
All things being equal yeah, the v.s. motor is great. However, if it goes bad, the cost to replace it is prohibitive versus that of a psc motor. Not to mention if a replacement is readily available.
There are settings in which v.s. is great, but, in my opinion, the benefits of a v.s. do not exceed the benefits of psc.
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Old 09-20-2009, 11:43 AM   #19
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Then you haven't seen a VS in a proper duct system.
Nor on a slightly undersized duct system.

Both of these are applications where a PSC comes no where close to providing the performance of a VS blower.


That kind of reasoning is mostly heard from those that dont understand VS blowers.

VS blower motors SELDOM fail. The module goes out, the motor is fine. Just like a cap going out on a PSC motor. You replace the module, not the whole motor.
Many techs don't know this. And replace the motor needlessly. Costing their customers a lot of money for no valid reason.

Techs that take training courses on VS motors, know how to check to see if its the motor or module that failed. And they SELDOM find bad motors.

Always check what failed. And then look for the reason it failed.
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Old 09-20-2009, 11:57 AM   #20
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My experience was not good. It was likely the conroller was bad, as water dripped in that section. Yes, the motor was likely alright. Bottom line, the supply house said a controller wasn't available, and we needed to replace the whole thing. It left a bad taste. Especially when psc's are readily available at a fraction of the cost.

It is possible to know how they operate and still not be a fan of them. It's not a question of how they operate, it's a question of price and availability of replacement parts. Which should not be an issue during the peak of cooling or heating season.
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Old 09-20-2009, 12:08 PM   #21
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95% of my customers run them continuosly so they pay for themselves in no time. If it lasts 10 yrs it will have paid for itself several times over. The new X13 ECM non variable speed motor is going to replace most PSCs in the near future and will be reasonably priced. PSCs are fine for the "meat and potatoes" type furnace but once you get in the higher league, people expect more comfort, quieter operation etc and that is where the variable speed ECM comes in.
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Old 09-20-2009, 12:24 PM   #22
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My suppliers carry them instock.

You need to fine better suppliers. That don't dictate what part selection your limited to.

PSC, may cost less. But thats because you get less performance from them.

You can't get the CFM control from a PSC that you get from a VS.

Like them or not. Your going to see less PSC motors on mew units i the near future.
X13's and VS will be the norm.
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Old 09-20-2009, 02:20 PM   #23
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95% of my customers run them continuosly so they pay for themselves in no time. If it lasts 10 yrs it will have paid for itself several times over. The new X13 ECM non variable speed motor is going to replace most PSCs in the near future and will be reasonably priced. PSCs are fine for the "meat and potatoes" type furnace but once you get in the higher league, people expect more comfort, quieter operation etc and that is where the variable speed ECM comes in.
Fair enough. I am not against the science and technical aspect, it's about supply and distribution.
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Old 09-27-2009, 01:08 PM   #24
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I certainly appriciate all the responses but can someone give me the consensus opinion? Maybe which quote is the best and perhaps let me know if there is a better model to ask the guy about?
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Old 09-27-2009, 01:16 PM   #25
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Which contractor will provide the best service after the sale?

Will the 20 SEER after tax credit be close to teh price of the better or good unit.

Do you want to be tied into a Lennox dealer only for service for a few years.
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Old 09-27-2009, 01:22 PM   #26
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I don't think you will ever get a consensus opinion because we Pro's all sell different brands of which each has Pro's and Con's. There is lots of info in those replies and you need to decide whether you want to get the tax credits and buy higher SEER units or go with a basic unit. All depends on how long you plan to be in the house. Would take at least 10 yrs to recoup the extra $$ investment of over 15 SEER units and appreciate some savings. All the brands are good and it is like choosing between GM, Ford or Chrysler and each guy will beat up the other guy over his favorite. The Lennox I have seen for 6-7 yrs and has a very good track record. If the house is quite airtight you will need a ventilaton system or you will get sick from the fumes from new carpet, paint etc and have too much moisture/mold issues.

Hope this helps.
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Old 09-27-2009, 01:25 PM   #27
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Bases simply on my impression of each person that came out, the lennox guy really stressed how his company serviced down the road and seemed to give the best presentation. All three companies seem to have a good rep based on word of mouth and sites like angieslist. The tax credit of the 20 seer system will get the price close to his better system option, but it is still thousands above the others. While stzats are impressive, will it make a huge difference in the comfort of the system over the other options? What size is that 20 seer system...I dont see that mentioned in his estimate...does the model # give the size?
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Old 09-27-2009, 01:41 PM   #28
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I do understand the need for ventilation since my home will be sealed like it has never been before and wsill look into that option with whoever i go with. I am not sure how long I will be in th ehouse....but i suspect it will be somewhere between 5 and 10 years. I was also thinking I might need to have a humidifier but based on what you said maybe not.
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Old 09-27-2009, 01:42 PM   #29
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The #180 is the series/type and not the size, need to get it from him. A 2 stage A/C will remove humidity better and be slightly more comfortable. You can get them in 16 SEER from Lennox and others and not have to spend nearly as much $$. Beware of the physical size of a 20/21 SEER A/C , they are as big as a boat/fridge and some people won't like that. Doesn't sound to me like you will be in the house long enough to make anything over 16 SEER pay off, just my opinion though. I would invest my extra $$ in a good HRV and have much better quality air and health.
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Old 09-27-2009, 02:30 PM   #30
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If the Lennox dealer is the only one that stressed service after the sale. He is probably the dealer you should go with.

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