Trane vs Amana

[gradyb]

New user, needs input.
I have a 2400 sq ft, single story home in DFW, TX area. Over the last 2 yrs, my average electric bill is $160/mo. I have two proposals for replacing my total electric HVAC system with a heat pump. First proposal is a Trane, 5 ton, 15 SEER, with variable speed airhandler. The second proposal is for an Amana, 5 ton, 16 SEER, 2 speed heat pump with variable speed airhandler. The Trane has a 10 yr parts and labor warranty, the Amana has a lifetime replacement on hp, 10 yrs on parts and labor. The cost difference between the two systems is negligible. My confidence in each company's installers and warranty support is the same. So my dilemma is which one to choose. I have not had experience with either manufacturer and I know what I'm asking is going to be very subjective, depending on who is answering. But I've still got to ask: "Which would be the correct choice?"

[skippedover]

Do you have a quarter? Heads, Trane, tails, Amana. Good luck.

[kangaroogod]

Assuming that the installing contractors are comparable, the amana will be slightly more efficient, it will be a 2 stage unit which is a big benefit, and if the compressor fails year 11 the trane system will be replaced at your expense (most likely the entire system) as the compressor will not be under warranty. The amana system will provide either a new condenser or compressor at no charge (although you will be paying labor). If you are going to be living in the home for only a few years it really does not matter. If you are going to be there for the long term the better warranty seems to make sense to me.

[catmanacman]

Do you have a 5 ton currently installed ,do you need a 5 ton or could you add some insulation and go down to a 4 ton, Also at 160.00 a month unless its broke ...

[gradyb]

In answer to the questions;
I currently have a 5 ton Lennox HVAC, non heat pump unit. The unit is approx 12 or 13 yrs old.
There is 18" of insulation in the attic.
The reason for replacing the unit now is that my wife and I are usually gone about 3 months of the yr. (part of the reason for the $160/avg) and a majority of that time is in the summer. I don't relish the idea of getting a phone call while I'm 2500 miles away from home that my A/C has died.
And I also think that after 10 yrs, if either unit craps out, I'm going to be out some $s anyway.
So again I ask, how does the Amana 2 stage hp compressor stack up against the single stage Trane? Overall, should the Trane be a more reliable, better built unit than the Amana?

[SkyHeating]

I have always found the Trane units especialy the 15 SEER to be the most reliable(so reliable that I in fact have a 15 SEER Trane XL15i Heat Pump at my house)

But select the best contractor first.

[HVAC/Stud]

Which 1 is doing a load calculation? 5 ton sounds to big.

[gradyb]

They both did a load calculation. Both did the calculation using outside measurements. One took the measurements and went back to their office to do the calc. Their calc showed 4.2 tons. The other took the measurements and with his laptop, produced the report. It showed .70 SHR to be 3.6 tons. One of the reasons for stepping up to the larger unit is that from May to Sept. it is not uncommon for the temperature at 11 am to be the temperature at 10 pm. With humidity...

[beenthere]

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[beenthere]

One of the reasons for stepping up to the larger unit is that from May to Sept. it is not uncommon for the temperature at 11 am to be the temperature at 10 pm. With humidity...

And that means a larger size why?

[gradyb]

Only saying that it doesn't cool down as fast as other areas. And I'm not sure that they are proposing a "larger size" based on the load calcs. If the load calc shows 4.2 tons or 70% SHR @ 3.6 tons, would a 4 ton unit be large enough? I'd rather be safe than sorry. Still curious on whether the 2 stage compressor in the Amana unit would be a better deal than a 1 stage compressor in the Trane unit. Also, went back to the Trane quote and the unit is a 14 SEER unit, not a 15 SEER as originally stated.

[beenthere]

At night time without solar gain, heat gain is reduced.

On those hot days, did your old 5 ton have to run 24/7.

[gradyb]

Not 24/7. But, keeping inside temp @ 79 (with fans) and 80 at night is not the most comfortable, either.