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Immortalsolitude 20.4K Views
May 17, 2026 7:42 PM

Feelfunn 18000 BTU Mini Split AC / Heating System (1250 Sq. Ft.)

$550

$900

38% off
+ Free S&Hat Amazon
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Deal Details
Feelfunn via Amazon has Feelfunn 18000 BTU Mini Split Air Conditioner / Heating System (1250 Sq. Ft.) on sale for $549.99. Shipping is free.

Thanks to Community Member Immortalsolitude for sharing this deal.

Product Details:
  • Fast Cooling & Heating for Year-Round Comfort: The Feelfunn mini split AC/heating system offers 18000 BTU cooling and 18000 BTU heating, making it ideal for spaces up to 1250 sq. ft. (116m²). It cools or heats your room quickly, with a temperature range of 60°F to 90°F (16°C to 32°C), providing consistent comfort in all seasons. Perfect for both residential and office use.
  • Smart Control with Alexa & Google Assistant: Control your mini split AC with voice commands via Alexa or Google Assistant at home. Remotely activate the AC from your phone when you're away, so you can enjoy cool comfort as soon as you walk in. Includes a remote for flexible use, perfect for bedrooms, living rooms, stores, restaurants, and warehouses.
  • Energy-Efficient & Quiet Operation: With SEER2 20 cooling efficiency and HSPF2 9 heating performance, this mini split reduces energy consumption by up to 36% compared to traditional models. It operates quietly at less than 28 dB, ensuring peaceful sleep, while the 24-hour timer lets you enjoy comfort all night long.
  • Self-Cleaning & Weather-Resistant: This 18000 BTU mini split features a high-temperature self-cleaning function and a washable filter to keep the air fresh and clean. The outdoor unit operates efficiently in temperatures from -13°F to 125.6°F, making it suitable for all seasons.

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Limited time deal, while supplies last.
  • About this Store:
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.
    • Seller Feelfunn has a 84% positive feedback rating in the last 12 months, with over 500 Lifetime feedback.
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by Immortalsolitude
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Feelfunn via Amazon has Feelfunn 18000 BTU Mini Split Air Conditioner / Heating System (1250 Sq. Ft.) on sale for $549.99. Shipping is free.

Thanks to Community Member Immortalsolitude for sharing this deal.

Product Details:
  • Fast Cooling & Heating for Year-Round Comfort: The Feelfunn mini split AC/heating system offers 18000 BTU cooling and 18000 BTU heating, making it ideal for spaces up to 1250 sq. ft. (116m²). It cools or heats your room quickly, with a temperature range of 60°F to 90°F (16°C to 32°C), providing consistent comfort in all seasons. Perfect for both residential and office use.
  • Smart Control with Alexa & Google Assistant: Control your mini split AC with voice commands via Alexa or Google Assistant at home. Remotely activate the AC from your phone when you're away, so you can enjoy cool comfort as soon as you walk in. Includes a remote for flexible use, perfect for bedrooms, living rooms, stores, restaurants, and warehouses.
  • Energy-Efficient & Quiet Operation: With SEER2 20 cooling efficiency and HSPF2 9 heating performance, this mini split reduces energy consumption by up to 36% compared to traditional models. It operates quietly at less than 28 dB, ensuring peaceful sleep, while the 24-hour timer lets you enjoy comfort all night long.
  • Self-Cleaning & Weather-Resistant: This 18000 BTU mini split features a high-temperature self-cleaning function and a washable filter to keep the air fresh and clean. The outdoor unit operates efficiently in temperatures from -13°F to 125.6°F, making it suitable for all seasons.

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Limited time deal, while supplies last.
  • About this Store:
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.
    • Seller Feelfunn has a 84% positive feedback rating in the last 12 months, with over 500 Lifetime feedback.
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by Immortalsolitude

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Top Comments

Community Reviews

This Feelfunn mini split stands out for its 18,000 BTU, 230V setup, R32 refrigerant, Wi-Fi control, and low running cost claims. The comments also point to easy app setup, Google integration, and the usual mini-split advantage of pre-charged lines that can be installed with the right tools. The main concerns are the unclear warranty, uncertain refrigerant and charging details, and the fact that installation can still require HVAC-specific gear and know-how. Shipping also adds to the total price, and the included lineset is described as thin. It looks best suited to someone comfortable handling a more involved install.

Common Questions (5)

  • The listed $549 price is offset by $99 shipping, and installation can add significant cost if you need tools, a vacuum pump, or professional charging. That makes the real total much higher than the sticker price, especially if you are not doing the install yourself.

  • These mini-split kits are reported to come pre-charged, but the install still typically requires evacuating the lines with a vacuum pump before opening the system. The included lineset is also described as thin, so the refrigerant charge and line handling matter for a reliable install.

  • It is doable, but it is not a simple plug-and-play job. You need HVAC tools and know-how such as a vacuum pump, flare tools, a torque wrench or crow's foot, and ideally a micron gauge, plus careful condensate and lineset handling.

  • Yes, this 18,000 BTU model is 230V, and that higher voltage is part of why it is considered more practical than trying to run 18k BTU on 120V. The 230V setup also means the electrical work should be handled carefully if you are self-installing.

  • The listing imagery shows R32 refrigerant, which is a newer A2L refrigerant with lower global warming potential than R410A. That also means it is treated as more flammable than older refrigerants, so installation and handling matter.

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38 Comments

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May 19, 2026 4:40 AM
3.5K Comments
Joined Mar 2005
ProbedudeMay 19, 2026 4:40 AM
3.5K Comments
Quote from smallcapguru View quoted comment :
The second thing that is not mentioned that has me worried is that this does not explicitly say that it comes pre-charged. This usually means you need somebody familiar with subcool/superheat/glide to charge the system up.
How do you measure/calc subcool/superheat/glide with these capillary systems what with the service ports on the suction line and the post capillary line?

Lastly, is it true the capillary mini-split systems lose cooling capacity if the outside air temp drops below 90? (high side pressure drops, starving the evaporator of liquid). I've got a system that freezes you indoors when the outside temps are high (>90), but is worthless in the evenings when the house is heatsoaked but the air temp outside is low 70's.
May 21, 2026 4:23 PM
23 Comments
Joined Jun 2025
HappyBoundary3430May 21, 2026 4:23 PM
23 Comments
Quote from Dathiene View quoted comment :
Typically they come pre-charged with refrigerant but you will need a vacuum pump to remove the air from the lines once installed. (They run anywhere from $100-$150). Plenty of youtube videos on how to install them. One common mistake people make is coiling up additional line vertically but you want to make sure to coil it horizontally or you will run into issues with the oil pooling at the bottom of the line and causing a failure in the pump.
or just let the air out with little coolant wasted if you have no vacuum pump. Not recommender for R32 though, it is flammable.
Last edited by HappyBoundary3430 May 21, 2026 at 10:29 AM.
1
May 21, 2026 4:25 PM
23 Comments
Joined Jun 2025
HappyBoundary3430May 21, 2026 4:25 PM
23 Comments
Quote from Iselinzilla View quoted comment :
I like that it's R-32, which is next-gen. It won't go obsolete tomorrow. 220V is nice. Less hit to the electric bill. This will cost less to run than a 110V window unit half its size.
As for the Chinese no-name, I've dealt with AC units and they all use the same parts bin. Your local AC repair guy just orders comparable parts to install whenever "brand name" units break. Might as well save money up front.
I would rather pay extra to get Senville. They shipped me failed parts for free.
May 22, 2026 10:33 PM
20 Comments
Joined Dec 2008
ReasonablemanMay 22, 2026 10:33 PM
20 Comments
These aren't impossible to install, but they do require special equipment to perform the installation correctly. You'll need tools to cut, deburr, and flare copper tubing. You'll also need a vacuum pump. A specialty torque wrench or crow's foot to tighten the flare nuts and a micron gauge are a plus. Tubing inserts to bend the lineset without kinking it makes the job much easier. Get a lineset cover to give the job a professional look. Have a good plan for managing the condensate. Benjamin Sahlstrom has some excellent YouTube videos on mini split installation.
May 23, 2026 11:00 PM
476 Comments
Joined Aug 2006
Keisuke-sanMay 23, 2026 11:00 PM
476 Comments
Dang, my410a unit I think is leaking, I had it refilled a few months ago, AC guy told me to replace it instead of trying to repair the leak, was hoping for a recent deal.
Jun 1, 2026 8:55 PM
2K Comments
Joined Dec 2004
smallcapguruJun 1, 2026 8:55 PM
2K Comments
Quote from Probedude View quoted comment :
How do you measure/calc subcool/superheat/glide with these capillary systems what with the service ports on the suction line and the post capillary line?

Lastly, is it true the capillary mini-split systems lose cooling capacity if the outside air temp drops below 90? (high side pressure drops, starving the evaporator of liquid). I've got a system that freezes you indoors when the outside temps are high (>90), but is worthless in the evenings when the house is heatsoaked but the air temp outside is low 70's.
Subcool is usually done with these mini splits because of the electronic valves. I know a lot of times you have to force it to run at 100% if it's a variable speed system. But since most of these are shipped without refrigerant and they're pretty small systems, it is probably easiest to just measure the weight and make sure that your Freon tank is on a good digital scale.

Unless they've changed something, most of the inverter mini splits don't use capillary tubes or txvs, we see those on regular Central air/split HVAC systems. Inverter ones typically use eevs.
Jun 2, 2026 1:42 AM
3.5K Comments
Joined Mar 2005
ProbedudeJun 2, 2026 1:42 AM
3.5K Comments
Quote from smallcapguru View quoted comment :
Unless they've changed something, most of the inverter mini splits don't use capillary tubes or txvs, we see those on regular Central air/split HVAC systems. Inverter ones typically use eevs.
Just a fixed orifice then?

I have a unit that I charged by weight and I don't think the charge is right (scale is accurate - I checked). Pumped down to about 200 microns. Symptoms are very poor cooling performance when the outside air temperature is cooler than 80 degrees.

If it's 90+ outside, the inside will be nice and icy cold, but once the sun sets and the outside temps drop into the low 70's and the inside of the house is 85, it doesn't cool well at all. I've read that's because the condenser pressure isn't very high, starving the evaporator and greatly reducing cooling capacity.

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Jun 12, 2026 2:26 PM
2K Comments
Joined Dec 2004
smallcapguruJun 12, 2026 2:26 PM
2K Comments
Quote from Probedude View quoted comment :
Just a fixed orifice then?

I have a unit that I charged by weight and I don't think the charge is right (scale is accurate - I checked). Pumped down to about 200 microns. Symptoms are very poor cooling performance when the outside air temperature is cooler than 80 degrees.

If it's 90+ outside, the inside will be nice and icy cold, but once the sun sets and the outside temps drop into the low 70's and the inside of the house is 85, it doesn't cool well at all. I've read that's because the condenser pressure isn't very high, starving the evaporator and greatly reducing cooling capacity.
assuming this was a new unit and not an older ductless with clogged coil/filter, you cannot use subcool as you pointed out with these simple orfice/capillary tubes. there was a good article on hvac today. let me see if i can find it. https://hvactoday.com/refrigerant-charging/2/

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