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popularRed_Liz | Staff posted Yesterday 06:43 PM
popularRed_Liz | Staff posted Yesterday 06:43 PM

Costway 12000 BTU 24 SEER2 115V Ductless Mini Split Air Conditioner & Heater w/ WiFi $570 + Free Shipping

$570

$949

39% off
Costway
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Costway [costway.com] has Energy Star Certified 12000 BTU 24 SEER2 115V Ductless Mini Split Air Conditioner & Heater w/ WiFi for $780 - $190 off w/ code XQFP10895 at checkout = $569.99. Shipping is free.

Product Details:
  • Heating in frigid temperatures as low as -15°F with built-in chassis electrical heating system
  • Fast cooling and heating with the powerful compressor and heat pump
  • Stable, silent, and efficient performance thanks to the inverter technology
  • ENERGY STAR, ETL and AHRI certifications
  • You can control your comfort effortlessly through various options including a remote control, a compatible free app, or voice commands via Alexa.
  • Built in 7 modes for all-season use: Auto, cool, heat, dry, fan, sleep, and ECO
  • 4 fan speeds (low, mid, high, turbo) meet personal needs
  • High-temp self cleaning options: condensation, frost, melting, sterilization
  • Features up and down, left and right adjustable airflow for wide coverage
  • Ensures comfy sleeping environment with screen off function and 24H timer
Specs:
  • Cooling Capacity: 12000 BTU
  • Heating Capacity: 12300 BTU
  • Cooling Power: 960W
  • Heating Power: 850W
  • Voltage: 115V~60Hz
  • Heat Pump: 1 ton
  • Coverage Area: 750 sq.ft
  • Dehumidifying Capacity: 51 Pints/Day
  • Air Flow Rate: 412 CFM
  • Temperature Setting Range: 60℉~90℉
  • Operating Ambient Temperature: -15℉-126℉
  • Refrigeration: R32
  • HSPF2: 10
  • SEER2: 24
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costway [costway.com] has Energy Star Certified 12000 BTU 24 SEER2 115V Ductless Mini Split Air Conditioner & Heater w/ WiFi for $780 - $190 off w/ code XQFP10895 at checkout = $569.99. Shipping is free.

Product Details:
  • Heating in frigid temperatures as low as -15°F with built-in chassis electrical heating system
  • Fast cooling and heating with the powerful compressor and heat pump
  • Stable, silent, and efficient performance thanks to the inverter technology
  • ENERGY STAR, ETL and AHRI certifications
  • You can control your comfort effortlessly through various options including a remote control, a compatible free app, or voice commands via Alexa.
  • Built in 7 modes for all-season use: Auto, cool, heat, dry, fan, sleep, and ECO
  • 4 fan speeds (low, mid, high, turbo) meet personal needs
  • High-temp self cleaning options: condensation, frost, melting, sterilization
  • Features up and down, left and right adjustable airflow for wide coverage
  • Ensures comfy sleeping environment with screen off function and 24H timer
Specs:
  • Cooling Capacity: 12000 BTU
  • Heating Capacity: 12300 BTU
  • Cooling Power: 960W
  • Heating Power: 850W
  • Voltage: 115V~60Hz
  • Heat Pump: 1 ton
  • Coverage Area: 750 sq.ft
  • Dehumidifying Capacity: 51 Pints/Day
  • Air Flow Rate: 412 CFM
  • Temperature Setting Range: 60℉~90℉
  • Operating Ambient Temperature: -15℉-126℉
  • Refrigeration: R32
  • HSPF2: 10
  • SEER2: 24

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8 Comments

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Today 12:52 AM
117 Posts
Joined Mar 2020
DathieneToday 12:52 AM
117 Posts

Our community has rated this post as helpful. If you agree, why not thank Dathiene

I have this unit. I live in Phoenix and it's been working great to keep my 2 car garage cool. Uses about 1100 watts max and I have it plugged into a Pecron F3000 power bank with about 1300w solar input so it is able to run for about 9 hours for free. Was pretty easy to install - line set is a few feet shorter than other units but worked perfect for my setup. You'll need a vacuum pump with the correct attachments. The WiFi and app suck. I had to use my travel router to even get it to connect. Seems to be very picky with routers. The app is pretty bad but it at least lets me set a schedule which is all I really needed it for. You really can't go wrong with the price though.
1
Today 03:47 AM
1,626 Posts
Joined Dec 2007
UN0335Today 03:47 AM
1,626 Posts
Quote from Dathiene :
I have this unit. I live in Phoenix and it's been working great to keep my 2 car garage cool. Uses about 1100 watts max and I have it plugged into a Pecron F3000 power bank with about 1300w solar input so it is able to run for about 9 hours for free. Was pretty easy to install - line set is a few feet shorter than other units but worked perfect for my setup. You'll need a vacuum pump with the correct attachments. The WiFi and app suck. I had to use my travel router to even get it to connect. Seems to be very picky with routers. The app is pretty bad but it at least lets me set a schedule which is all I really needed it for. You really can't go wrong with the price though.
Thanks for your feedback. This seems like a great deal on a 24 SEER unit!

I was wondering if anyone can offer any information on why this unit seems to be on the low-end of moisture removal though? It seems like the highest efficiency units also seem to be the least capable at moisture removal. Looking at the specs in the picture, the models most capable of moisture removal (pints per day) seem to be the lower efficiency ones. This unit is as low as they go at 51 pints per day. The lower efficiency ones go as high as 81 pints, a big difference.

I'm in S. Florida, and the humidity is pretty brutal! I'd love to run the most efficient unit, but not if it can't also do a good job in lowering the humidity. The humidity is a huge factor in indoor air quality in places like FL.
Last edited by UN0335 May 26, 2026 at 08:50 PM.
Today 09:17 AM
14 Posts
Joined Aug 2016
Tomek_The_TomekToday 09:17 AM
14 Posts
Quote from UN0335 :

Thanks for your feedback. This seems like a great deal on a 24 SEER unit!

I was wondering if anyone can offer any information on why this unit seems to be on the low-end of moisture removal though? It seems like the highest efficiency units also seem to be the least capable at moisture removal. Looking at the specs in the picture, the models most capable of moisture removal (pints per day) seem to be the lower efficiency ones. This unit is as low as they go at 51 pints per day. The lower efficiency ones go as high as 81 pints, a big difference.

I'm in S. Florida, and the humidity is pretty brutal! I'd love to run the most efficient unit, but not if it can't also do a good job in lowering the humidity. The humidity is a huge factor in indoor air quality in places like FL.
I believe this is because Humidity removal requires a lower temperature at the evaporator side. Think of it like you could pull like 2X air that is 1X cold from the cold piece of the unit or you could pull 1X air that is 2X colder from the unit, for a given amount of cooling. Anyway, the colder the unit the bigger the difference between hot and cold. The bigger the difference between hot and cold, the lower the efficiency.

This is the theoretical driver for the issue. There could be other practical manufacturing reasons too.
1
Today 05:44 PM
445 Posts
Joined Apr 2007
porshuhToday 05:44 PM
445 Posts
Does anyone know how low the outside air temp can be - and still count on the heat pump to provide warm air inside?
Today 06:14 PM
1,193 Posts
Joined Nov 2007
swegaz0rdToday 06:14 PM
1,193 Posts
Anyone know if these work with the ESPHome boards like this?

https://static.xtremeownage.com/b...t-esphome/
Today 06:43 PM
826 Posts
Joined Sep 2016
frozenthornToday 06:43 PM
826 Posts
Quote from Tomek_The_Tomek :
I believe this is because Humidity removal requires a lower temperature at the evaporator side. Think of it like you could pull like 2X air that is 1X cold from the cold piece of the unit or you could pull 1X air that is 2X colder from the unit, for a given amount of cooling. Anyway, the colder the unit the bigger the difference between hot and cold. The bigger the difference between hot and cold, the lower the efficiency.

This is the theoretical driver for the issue. There could be other practical manufacturing reasons too.
Definitely on the right track but we're still talking on paper, in real world humidity removal the SEER2 22 will generally outperform a lower SEER rating unit like the popular SEER2 17 of the same brand.
Higher SEER2 systems do often get efficiency by using larger coils, lower compressor lift, higher evaporator temperatures, more optimized airflow, inverter/variable-speed operation, and better overall metering. Those things can improve efficiency but yes its a valid worry that those changes may reduce latent removal per hour in lab test conditions because the coil may not be as cold.
But real-world humidity control depends more on runtime, airflow, staging, coil temperature, dehumidification mode, and whether the system is oversized. For Florida where I live and work, the big issue is that a lower-efficiency SEER2 17 system can remove more moisture while it is running, especially if it has a colder coil. But if it satisfies temperature quickly and shuts off which most would, it may not remove as much total moisture over the day. A SEER2 22 variable-speed or communicating system may show lower moisture removal on paper, but in real life it can often do better because it runs longer at low capacity, keeps air moving across a cold coil longer, and some even have a dehumidification setting that slows the blower down to increase the effect.
1
Today 07:21 PM
6 Posts
Joined Nov 2019
JollyBanana662Today 07:21 PM
6 Posts
Quote from Dathiene :
I have this unit. I live in Phoenix and it's been working great to keep my 2 car garage cool. Uses about 1100 watts max and I have it plugged into a Pecron F3000 power bank with about 1300w solar input so it is able to run for about 9 hours for free. Was pretty easy to install - line set is a few feet shorter than other units but worked perfect for my setup. You'll need a vacuum pump with the correct attachments. The WiFi and app suck. I had to use my travel router to even get it to connect. Seems to be very picky with routers. The app is pretty bad but it at least lets me set a schedule which is all I really needed it for. You really can't go wrong with the price though.
I cannot install this on my own, any pointers in Phoenix area who is reliable and can install this for me?

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Today 07:25 PM
124 Posts
Joined Nov 2014
DGloriousToday 07:25 PM
124 Posts
Nice!

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