Pricing not allowed in posts as per site rules.

 

You stuck on those two models of Trane? Trane is more of a recognized brand, but remember the reliability/longevity of a system fails under, proper ductwork sizing, proper equipment sizing, following the install and set up guide of the indoor and outdoor section as closely as possible and not brand. Some Contractors do a better job at that then other Contractors,

Have them do one of these, a startup/commissioning report, if they sized everything correctly and did a quality install and set up, thinking they don’t need to fudge numbers as everything should be within manufacturers specifications.

https://www.energystar.gov/sites/de...s/default/files/HVAC Commissioning Checklist v100 2018-05-18_Clean_fillable.pdf

Err, here is a Amana version of the Daikin Fit, probably gives similar efficiency ratings and probably would not apply for the Federal Tax Credits thou, but has a limited lifetime compressor warranty, if compressor ever fails to original registered owner you get a new outdoor unit and not a replacement compressor like Trane which tops off at either 10/12 year.

Have the Daikin Contractor bid a Amana model of your choice if interested in that brand.

https://www.amana-hac.com/

Also go to “Products” to view all the other Heat Pump models. The limited lifetime whole new outdoor unit starts with the ASZC16 two stage and should easily meet all rating numbers for the Federal Tax credits and any rebates your state may have….

If you want to apply for the Federal Tax Credits and any rebates your state may have ( as you never mentioned money in your pockets rebates ) the tradition vertical discharge two stage or inverter Amana has the same warranty. If compressor ever fails to original registered owner you get a new outdoor unit, not a replacement compressor like Trane which tops off at 10/12 years.

Extended labor warranty is another consideration, Amana backs their extended labor warranties ( up to 10 years extended labor warranty ) , Trane also offers extended labor warranties up to 10 years, but they use a 3rd party company to cover the warranty.

Chances the Amana will have more standard features from the manufacturers than the Trane of the same tier line, a Copeland Coresence compressor protection module as one example only.

Daikin is fairly/somewhat new to the USA but is the number one HVAC manufacturer in the world. Amana and Goodman are under Daikin umbrella.

They built a massive state of the art manufacturing facility outside of Houston a few short years ago. It’s the 5th largest factory in the world from what I read.

Make sure to register each section of whatever brand model you decide on as manufacturers warranty decreases if never registered.

No I do not own stocks in Daikin :grin2:

 

Oops, I'm so sorry; I thought that meant no advertising of pricing.... wow I'm getting off to a great start.

 

Thanks Bazooka for your reply,
I'm not really married to Trane, but they are popular around here and there are several Trane installers. On the other hand, there are no Amana installers nearby and the Daikin dealers don't even mention the Amana brand on their websites; I'm guessing it might be a parts availability issue??

I was just researching today about system commissioning and will ask whoever I decide on to provide that service. Also, as far as I know, the reps did not do a load calculation. They did crawl under my house and were there for a good while but I assume they just quoted the same capacity system that was already here. They did measure the return areas and looked carefully at the duct work which they said was in very good shape.

 

I'm not really married to Trane, but they are popular around here and there are several Trane installers. On the other hand, there are no Amana installers nearby and the Daikin dealers don't even mention the Amana brand on their websites; I'm guessing it might be a parts availability issue??

I was just researching today about system commissioning and will ask whoever I decide on to provide that service. Also, as far as I know, the reps did not do a load calculation. They did crawl under my house and were there for a good while but I assume they just quoted the same capacity system that was already here. They did measure the return areas and looked carefully at the duct work which they said was in very good shape.

the Daikin dealers don't even mention the Amana brand on their websites; I'm guessing it might be a “parts” availability issue??

Amana has many many model lines, doubt it’s a “parts” issue. All I was saying is if the Contractor is bidding Daikin, Amana is pretty much a clone of Daikin models. Parts are parts, models are complete systems.

If you feel good with the Trane, then get one of those models. The XV18 looks to have a 12 year compressor warranty and 10 years parts and coil. The XR16 two stage has a 10 year compressor, parts and coil warranty. If you do not register each section it will revert to 5/5 warranty.

Whatever model and brand you decide on especially if it’s a inverter, hopefully whoever you hire is trained on the model you choose as inverters are more complicated than a two stage. You will find out how well your system was installed, set up and operating by the amount of times you need to call the Installing Contractor back under the labor warranty period to tweak, do modifications, etc.

You will also know pretty quickly on how well the Tech. they send out is trained/understands your system by diagnosing your issue(s) and making corrections the 1st time.

You should also ask them to explain the sequence of operation ( if your proactive with your new system ) under different scenarios, such as what happens to the compressor and indoor fan motor when it reaches close to thermostat set point in heat and cool. What happens to the compressor and indoor fan motor when it’s farther away from thermostat setpoint?

What happens when system goes into defrost, do you currently have electric heat for defrost and added heat?

What do you use if Heat Pump fails in heat mode?

No mention from you about applying for your $tate$ rebate$, didn’t any of the bidding Contractors mention them to you? They should have as your talking at least mid level AHRI equipment and those typically apply. Check your states/local utility company website to see what the minimum threshold are.

 

Sounds like you’re all set and off and running, just need to decide between the two Tranes and hopefully the Installing Contractor does an outstanding install and start up with your correctly sized ductwork and equipment.

Hopefully the existing lineset ( if they reuse it ) is sized correctly for the new equipment?

Interesting that Contractors in SC need to be a Mechanical Contractor to offer rebates, and not just a HVAC or HVAC/R Contractor, as in my state anyway and my thinking of what a Mechanical Contractor is, it’s a Company that is licensed to do Plumbing and HVAC/R, Piping and Ductwork which is more in line with Commercial and Industrial applications.

Emcor I believe is the largest Mechanical Contractor in the nation and is licensed to do all the above mentioned, and probably more, they may also have an Electrical division?

Must be a different classification in SC I guess?

 

Daikin may make Amana and have the rights to the name but it is a separate brand. So like with everything out there, you won't find it on Daikin's site. www.amana-hac.com

EER2 is at fixed conditions. Unless it changed, it's 95° outside, 80° with 67° wetbulb inside. SEER2 is at much cooler outside temps so it is higher than EER2. Since EER2 looks at warmer conditions it is good for those in hot climates to look at EER2 where we don't here in the north.

Always look at HSPF2. I've seen some high end high SEER systems with bare minimum HSPF.

 

Daikin may make Amana and have the rights to the name but it is a separate brand. So like with everything out there, you won't find it on Daikin's site.

EER2 is at fixed conditions. Unless it changed, it's 95° outside, 80° with 67° wetbulb inside. SEER2 is at much cooler outside temps so it is higher than EER2. Since EER2 looks at warmer conditions it is good for those in hot climates to look at EER2 where we don't here in the north.

Always look at HSPF2. I've seen some high end high SEER systems with bare minimum HSPF.

with regard to Amana; I was referring to my local contractor's website. They are a Daikin dealer, but do not mention Amana anywhere on their site.

Thanks for confirming my thoughts on EER2 ratings; living here in a very hot Columbia SC, I want a system that is efficient at high outdoor temps. We see over 95F days here quite frequently. I guess those side discharge condensers that the Fit uses are maybe not as efficient at high ambient temps??

With regard to HSPF2; I have noticed them being lower on many systems that look great on the other two, but for SC it is my least worrisome stat to look at.

 

Where did you get the DZ7TC from, the Contractor? Does not show that model on Daikin current web-site the two stage looks to be DZ16TC the T stands for two stage.

https://daikincomfort.com/ go to Products, Whole House Heat Pumps

Here is some info on the Air Conditioning model, DX7TC go to “warranty PDF” and it does list the DZ7TC as a line dated 12/22

https://backend.daikincomfort.com/product/dx7tc

Possibly it’s a unadvertised Contractors special? Seen Carrier has a unadvertised model that’s not listed on there web-site but Contractors can get them.

Now your getting away from side discharge and getting a Daikin line that matches up with the Trane vertical discharge units. So your now comparing apples to apples.

 

Got the info on the DZ7TC from contractor; see attached pdf.

 

Here are the active AHRI matches using a Daikin Air Handler with the DZ7TCA36. Shows the model number with a A after DZ7TC.

211641718, 211641789, 211641792 and 211641793 the 1st one is a standard Air Handler, the other three are modular blower assembly with a very specific coil number for the match. One of the AHRI numbers looks to be for a horizontal furnace applications. All look like they easily meet the minimum threshold for the Federal Tax Credits, and thinking any rebates your state may have.

As guessing your getting those AHRI numbers from the Contactor, at least from the Trane Contractor. You can brainstorm with the Daikin Contractor when you meet with him.

Check yourself.

https://www.ahridirectory.org/

 

Any thoughts about adding a small amount of filtered fresh air ventilation to purge the indoor pollutants and renew oxygen. ASHRAE/American Medical association suggested fresh air change in 3-4 hours for the many hours of calm winds during mild seasons of the year when natural air changes are below optimal. A properly ventilated home needs supplemental for the hours when the a/c has low/no sensible cooling load to remove the moisture but the outdoor dew points are ]high. Our bodies need optimum oxygen levels for health especially in mature age. Natural infiltration declines during evening during the mild seasons of the year. Most home have less than a fresh air change in +12 hours during evenings.

A high quality single stage heat pump combined with a small whole house dehumidifier with the filtered (merv 13) fresh air during the calm mild seasons of the year is a new comfort and health experience. You set the temperature and %RH you want and the system will maintain it throughout the home. regardless of outdoor conditions. There are several makes out there, Santa Fe Ultra/Broan/Trane that are added to the a/c.

Disregard if not concerned.

Keep us posted on results.

Regards Teddy Bear

 

Looks to have some subtle differences in the features guide of the DV6VS and DZ17

https://daikincomfort.com/ Products, Whole House Heat Pumps, view products, Features and under Resources list the specifications sheet.

If your using the exact model number of the Air Handler on both the DV6VS AHRI number is 210435092 gives the same ratings. If homework was done correctly :grin2:

https://www.ahridirectory.org/

The Fit/DV6VS like other side discharge units can be mounted inches from a wall and have a smaller footprint than the typical vertical upflow discharge units, may be even more quieter also than a inverter upflow discharge model.

Lastly if you go Daikin ONE thermostat that has a 12 year manufacturers warranty, whereas most thermostat top off at five years. I believe you have to register the thermostat to get the 12 years.

Certainly the Daikin has the best manufacturers warranty of the brands and model you listed which includes the indoor Air Handler at 12 year parts and coil instead of 10 years coil and parts.

Whatever brand model you decide on, you seem to have done your homework, now all you need is a quality install and setup, hopefully whoever you hire is trained on the particular model you purchase, as especially a inverter is a complicated system compared to a single or even a two stage system.