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neomatrixviper 7.4K Views
Aug 10, 2026 12:29 PM

Atomi Smart 18K BTU Tempestas Inverter Ductless Mini-Split Air Conditioner and Heat Pump $999.99 free shipping Costco.com

$1,000

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https://www.costco.com/p/-/atomi-...?langId=-1

$480 OFF
Valid 8/1/26 through 8/31/26. While supplies last.

Year Compressor and 5-Year Parts Limited Warranty
ENERGY STAR Certified With Up to 21.2 SEER2 for Energy-Efficient Heating and Cooling
Inverter Ductless Mini-Split Air Conditioner and Heat Pump for Year-Round Comfort
Ultra-Quiet Operation With Smart WiFi, Voice Control Compatibility, and Included Remote Control
Professional Installation Recommended by a Licensed Electrician and HVAC/Refrigeration Technician
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Deal Details
Community Notes
About the Poster
https://www.costco.com/p/-/atomi-...?langId=-1

$480 OFF
Valid 8/1/26 through 8/31/26. While supplies last.

Year Compressor and 5-Year Parts Limited Warranty
ENERGY STAR Certified With Up to 21.2 SEER2 for Energy-Efficient Heating and Cooling
Inverter Ductless Mini-Split Air Conditioner and Heat Pump for Year-Round Comfort
Ultra-Quiet Operation With Smart WiFi, Voice Control Compatibility, and Included Remote Control
Professional Installation Recommended by a Licensed Electrician and HVAC/Refrigeration Technician

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20 Comments

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Aug 10, 2026 12:38 PM
304 Comments
Joined Jul 2007
don602Aug 10, 2026 12:38 PM
304 Comments
The heat mode rating is not good- may be OK for southern state- but not up north.
Aug 10, 2026 3:37 PM
4K Comments
Joined May 2013
MoisesA7010Aug 10, 2026 3:37 PM
4K Comments
only benefit of paying more here is that its costco and their return policy.

For the most part the cheaper the better and can find 18K units for half the price and all are made from the same factories. If costco included free install for this price than thats a different story
1
Aug 11, 2026 8:36 AM
175 Comments
Joined Jul 2025
TealGame1436Aug 11, 2026 8:36 AM
175 Comments
You get what you pay for with mini-splits. I just paid 3 times this price, for half the BTU's in exchange for a 32 SEER2 rating and a 10yr warranty. For the money this is a good purchase.
4
Aug 11, 2026 3:12 PM
25 Comments
Joined Mar 2022
SmartGiraffe126Aug 11, 2026 3:12 PM
25 Comments
Quote from don602 View quoted comment :
The heat mode rating is not good- may be OK for southern state- but not up north.
What numbers show that? I have just started looking at these. Tia
Aug 11, 2026 3:21 PM
108 Comments
Joined Dec 2018
JoeL9416Aug 11, 2026 3:21 PM
108 Comments
Quote from TealGame1436 View quoted comment :
You get what you pay for with mini-splits. I just paid 3 times this price, for half the BTU's in exchange for a 32 SEER2 rating and a 10yr warranty. For the money this is a good purchase.
That's crazy seer rating .. what brand & model is pumping out 32 seer ??
Aug 11, 2026 3:25 PM
175 Comments
Joined Jul 2025
TealGame1436Aug 11, 2026 3:25 PM
175 Comments
Quote from JoeL9416 View quoted comment :
That's crazy seer rating .. what brand & model is pumping out 32 seer ??
My bad it was 3 times smaller.

Mitsubishi 6,000 BTU FS-Series 32.2 SEER2
Aug 11, 2026 4:09 PM
304 Comments
Joined Jul 2007
don602Aug 11, 2026 4:09 PM
304 Comments
Quote from SmartGiraffe126 View quoted comment :
What numbers show that? I have just started looking at these. Tia
HI Smart, where do you live? it is called the hspf2 rating. NICE IF IT IS 9+ Some states require 10+ for new construction- I don't think it's needed. I look for =5F or -22F. capability.

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Aug 12, 2026 2:27 PM
22 Comments
Joined Dec 2018
duyrhinoAug 12, 2026 2:27 PM
22 Comments
Quote from MoisesA7010 View quoted comment :
only benefit of paying more here is that its costco and their return policy. For the most part the cheaper the better and can find 18K units for half the price and all are made from the same factories. If costco included free install for this price than thats a different story
I'd order two if free installation was included. Unfortunately, the labor cost is more expensive than the unit itself in my area.
Aug 13, 2026 1:10 AM
1.4K Comments
Joined Jul 2005
evidentAug 13, 2026 1:10 AM
1.4K Comments
Damn if this was 24k I'd be all over it if it was from costco
Aug 13, 2026 10:51 PM
474 Comments
Joined Feb 2008
xexxAug 13, 2026 10:51 PM
474 Comments
Quote from TealGame1436 View quoted comment :
My bad it was 3 times smaller.

Mitsubishi 6,000 BTU FS-Series 32.2 SEER2
Enjoy, but there's very little savings when SEER gets this high.

A 20 SEER2 unit might consume 1,000 kWh during a cooling season, the Mitsubishi would consume roughly 621 kWh, saving about 379 kWh. At 13.3¢ per kWh, that is approximately $50 saved here in Texas.

You could double the savings with extremely heavy cooling use: potentially $100 a year

Absolutely not worth the money as long as you're attached to the grid.
1
Aug 14, 2026 1:34 AM
3.4K Comments
Joined Jun 2014
EdEd1190Aug 14, 2026 1:34 AM
3.4K Comments
12K btu version is $699. Tempting, since it has Costco's "forever" return policy, and can be returned to store. Might be worth spending the couple hundred more for that.
Aug 14, 2026 3:43 AM
6.8K Comments
Joined Dec 2004
CaleoAug 14, 2026 3:43 AM
6.8K Comments
Quote from EdEd1190 View quoted comment :
12K btu version is $699. Tempting, since it has Costco's "forever" return policy, and can be returned to store. Might be worth spending the couple hundred more for that.
Hm. I might consider that one too. 23.9 seer also. 120V means it could run of my small solar setup too.
Aug 15, 2026 4:18 PM
691 Comments
Joined Dec 2014
FloridaKevinAug 15, 2026 4:18 PM
691 Comments
I bought a new prime 22 seer 115v with wifi off of fb marketplace (fb marketplace is full of them) for $400 and had someone put it in for $450. I do currently have it hooked to the grid, but I have a small solar setup that I am going to run it off of with a manual transfer switch so I can still use it from the grid if necessary. I have a 3kw psw inverter and it would instantly turn off when hooking up to my 13.5k btu on my camper trailer, even when I installed a soft start on it. Now I hooked up my prime mini split and it starts ramping up the amps like 1a every 5 seconds so it has absolutely no issue starting the unit. It peaked at 9.05a at 120v so just over 1000w which is awesome. My electricity rate here in central FL is about 14c/kwh so it would cost me right at $100/mo to run it non-stop. I have it installed in my garage and intend it to run only on solar, so I am going to set up a schedule for it to run for an hour in the morning and hopefully 4 hours in the afternoon. Maybe I will have a usable garage soon.
Aug 15, 2026 9:31 PM
285 Comments
Joined Nov 2014
suntzu187Aug 15, 2026 9:31 PM
285 Comments
Quote from xexx View quoted comment :
Enjoy, but there's very little savings when SEER gets this high.

A 20 SEER2 unit might consume 1,000 kWh during a cooling season, the Mitsubishi would consume roughly 621 kWh, saving about 379 kWh. At 13.3¢ per kWh, that is approximately $50 saved here in Texas.

You could double the savings with extremely heavy cooling use: potentially $100 a year

Absolutely not worth the money as long as you're attached to the grid.
13 cents is about half of what folks pay in California. Hawaii even higher. Also that rate won't last for long with all the data center expansion. And if they do manage to saddle ratepayers with new nuclear like they did in Georgia, watch out!

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Aug 16, 2026 12:36 AM
234 Comments
Joined Nov 2011
supergamesAug 16, 2026 12:36 AM
234 Comments
Would this be strong enough to cool a 3 car garage in a bog standard SoCal/IE house?

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