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Carrier slim vs Mitsubishi heat pump - Mild climate with db consideration

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5.7K views 23 replies 10 participants last post by  Bazooka Joe  
#1 · (Edited by Moderator)
Hey everyone.

I'm currently getting bids on adding AC to my house and one contractor threw a wrench into my plan by informing me of a Mitsubishi system due me liking somewhat low db's. Condenser will be right next to my office slider and directly below my master bedroom so somewhat quiet db's would be appreciated.

I live in a mild climate where for 2-3 months of the year, the heat is on for an hour or 2 in the morning and my home will stay in the 70's all day long as I get lots of sun. AC is unknown since I haven't had it before. My guess would be little more run time during the days but I live at the beach and we do get some occasional hot days. When he proposed this option, I started to think that this seems like a reasonable idea as I'm not heating my home for 12 hours a day and average low around here is 50 in winter.

Heating would obviously cost more (CA electricity rates...), but going from 14 to 18 seer AC might actually save me money in the long run with cheaper AC running costs. Initial costs are $x for a 68 db slim unit, vs $x for the 55 db Mitsubishi. He mentioned I could maybe even sell my 18 month old furnace. I've heard nothing but great things about Mitsubishi units but curious for your thoughts.

Anyone have some advice for me? Thanks.
 
#5 ·
Yea, he just suggested it to recoup some costs but I'm guessing it's $800 new or something and may not be worth it. Regarding SEER, you're saying I won't see a huge difference? I'm honestly clueless because I've never had AC before.
 
#3 ·
From my experience with minis, mostly Mitsubishi, the indoor & outdoor units are nearly inaudible. Usually if you stand in front of the outdoor unit, you'll hear a little compressor noise but likely won't hear a thing through a good glass door.
 
#4 ·
That's an assumption I was making as well. 55 is pretty quiet and through a slider, probably would be extremely hard to hear. My neighbor has a Bryant condenser at 73db and it honestly was loud in my opinion. Could be because we were talking and literally standing next to it, and I'm not needing absolute silence, I was just trying to see if that price difference would be worth it overall.

Anyone have other input? Hows reliability and maintenance compared between the two?
 
#6 ·
I'm a dealer for mistubishi and they're "just fine". That's my honest opinion. It is NOT the best, but Mitsubishi spends a lot of money on advirtising which is why some of my clients specifically request them. Of course I give them exactly what they ask for, but in the back of my mind I know there are other manufacturers who make a much better product that actually costs less too. Midea for example: They come standard with Hyper Heat compressors, and standard with gold plated hydrophilic coils. Mitsubishi doesn't even offer gold plated coils and Hyper heat is an upgrade. Meanwhile Mitsubishi units require that you use their thermostat. Midea equipment can use any 24 thermostat. That's my opinion about that.
 
#8 ·
I’ve been installing Mitsubishi for 30 years. (My God, I’m old). I am amazed to this day when I walk up to a running system, how quiet they are! I remember my first install... I had never worked with, or installed a Mitsubishi before, but I got it done and powered it up and turned it on. Panic set in when it didn’t run. I didn’t have any training on servicing these systems, and didn’t know what to do. I walked up to the unit, intending to start digging into the “problem” and realized that it was working perfectly. I just couldn’t hear it running.

I have customers who have these installed on their decks, next to a table and chairs, and they are fine with the lack of noise.
 
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#11 · (Edited by Moderator)
So if you all had to choose, would you consider another $ bucks (40% more in price) to be worthwhile? Things I'm now noticing: The Condenser would also be a reasonable amount smaller (sits right next to my front door) and that would be nice too. Lot of money for db's and maybe I didn't mention this, but my Rheem furnace is 18 months old. So I feel bad ripping that out but I plan to be in my home for 10 years. I think operating costs would be a wash.

Would you all say reliability on heats pumps is better or worse than a traditional furnace/condenser?
 
#20 ·
So if you all had to choose, would you consider another $ bucks (40% more in price) to be worthwhile? Things I'm now noticing: The Condenser would also be a reasonable amount smaller (sits right next to my front door) and that would be nice too. Lot of money for db's and maybe I didn't mention this, but my Rheem furnace is 18 months old. So I feel bad ripping that out but I plan to be in my home for 10 years.

I think operating costs would be a wash.

Would you all say reliability on heats pumps is better or worse than a traditional furnace/condenser?
It depends on L O C A T I O N
1. WEATHER
_____ HEATING & COOLING DEGREE DAYS

_ PROVIDE ALL the applicable, necessary co$t and $ystem data
_______ FOR YOUR $ituation

2. $0._ _ _ / KW-HOUR

3. $ _ ._ _ _ / Therm Natural Gas
 

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#19 ·
I wish there was a place where I could just go listen to units running haha.

Would help me determine
if I think 68 is quiet enough.
Try Summertime in your community ( or > 85'F Anywhere)
& bring your Sound Meter.

Jusy stay > 9 feet away and
you will not experience any SPL > ~ 59 dbA.

_______ Sound Power Level
 
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#13 · (Edited)
Here’s a couple other side discharge, if your talking ducted, the Trane XV19 variable comes with a 12 year compressor and 10 years parts. The XR16 low profile single stage 10/10 single stage.

Daikin Fit variable is another one, thinking best manufacturers warranty of the lot,..12 years parts and if compressor fails in the 1st 12 years you get a new outdoor unit, not a replacement compressor. indoor Air Handler has 12 year parts and coil warranty, thinking the Trane Air Handler have the standard 10 year parts warranty, once registered to original owner. Not sure about the Mitsubishi Air Handler warranties. The Daikin One + thermostat comes with a 12 year warranty, once registered.

All have low DB ratings in particular the variable speed models and can operate in colder OD temperatures than the conventional models. Variable speed models.

https://www.trane.com/residential/en/products/heat-pumps/xv19/

https://www.google.com/url?sa=t&rct...ntial/en/products/heat-pumps/xr16-low-profile/&usg=AOvVaw2veNsuSBY697jtmAyNT3nX

https://www.google.com/url?sa=t&rct...AD&url=https://daikincomfort.com/go/daikinfit/&usg=AOvVaw3SHzrlo7xVSlMxX_BBijJj
 
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#14 ·
Sorry ran out of time to update, looks like the Mitsubishi comes with a 12 year compressor and parts if installed by a Diamond Contractor.

The Daikin and the Trane offers extended labor warranty, if that interest you, the Daikin is either 6 or 12 years. The Trane is either 5 or 10. Daikin along with York are the only two manufacturers that back their extended warranty. The others use a 3rd party.

Not sure if Mitsubishi offers extended labor warranties, others here can straight me out on that....
 
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#16 ·
Fujitsu also offers 12 years if installed by an "elite" contractor.

Sent from the Okie state usin Tapatalk
 
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#18 ·
We installed a two zone Mitsubishi system in a recording studio. The owner’s concerns before the sale were about db level. He is positively thrilled with the installation and how quiet it is.
 
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#23 ·
Alright, I corrected my therm cost. I was using the production cost, not delivered with taxes etc. Looks like it's actually costing me more. I bumped up cooling because I like it cool and don't use a ton of heat (usually 1-2 hours a day in winter max). So if it's $2500 more up front for equipment and another $2500 in extra costs to produce heat, seems like a bad idea all around. $5k for 13 decibels.

Let me know if you think one of these numbers is what off but I think it looks right to me. I live on the beach, so it gets warm but AC isn't gonna run for 6 hours a day all summer etc.

COOLING
Equipment Size: 2.5 tons
Electric Rate: 35 cts/kWhr
Cooling Hours: 800

COOLING - STANDARD
System Type: A/C
SEER: 14

COOLING - HIGH EFFICIENCY
System Type: A/C
SEER: 18

HEATING
Equipment Size: 50000 Btus
Gas Rate: 154 cts/therm
Degree Days: 1300

HEATING - STANDARD
System Type: Single Speed Furnace
AFUE: 80

HEATING - HIGH EFFICIENCY
System Type: Heat Pump
HSPF: 13.6
Results
Cooling - Standard
Yearly Operating Cost: $600

Cooling - High Efficiency
Yearly Operating Cost: $467
Yearly Savings: $133

Heating - Standard
Yearly Operating Cost: $751

Heating - High Efficiency
Yearly Operating Cost: $1004
Yearly Savings: $-253
 
#24 ·
“I live on the beach“

As an option,..

https://www.carrier.com/residential/en/us/products/air-conditioners/

If you live within 10 miles of the seacoast, chances are you know how harsh salt air can be on an outdoor unit. This advanced Infinity series model is designed to withstand the rigors of your environment and is backed by one of the best seacoast warranties you'll find for an air conditioner.
With the Infinity 17 air conditioner you can have two-stage compressor comfort that lets the system bring up the cool if needed while functioning mostly in low-stage where you enjoy the highest efficiency and the best dehumidification. It's also generally quieter in low stage

The Comfort series of air conditioners is designed to give you simple, efficient and affordable cooling. Pair them with the right, SEER-boosting indoor unit and you can enjoy the money saving benefits of improved efficiency.
If you live within 10 miles of the coastline you may be aware of salt air corrosion. It can shorten the life of most air conditioners. This Comfort series model adds WeatherShield™ protection for superior sea coast corrosion resistance.
 
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