list of top 7 ductless mini split ac system with indoor and outdoor units and how to DIY installation

7 Best Ductless Mini Split AC Units With Highest SEER Ratings

Ductless mini split AC units are known as having high SEER ratings. When it comes to the most convenient way of cooling in the summer (and heating in the winter) the ductless mini split AC units are becoming increasingly more popular.

In recent years, the #1 unit type air conditioning engineers suggest when asked “I want to cool down 1 or several rooms at a reasonable price, which AC should I get?” is a mini split air conditioning unit.

We will look at which ductless AC units are the best on the market in just a bit. But first, let’s learn a thing or two about what this AC unit actually is and what are the benefits of using it.

We’ll also look at a very quick 3-key-factors-to-look-for ductless mini split AC buyers guide to illustrate what makes the best mini splits systems, well, the best.

What Does Mini Split System Air Conditioner Consist Of?

The mini split system keeps all the noise and the fuss outside the house. The unit inside the house is as quiet, comfortable, and energy-efficient as it gets.

The ductless mini split AC is made out of 4 parts:

  1. Outdoor unit (see sketch below). The compressor generates all the power and powers the fans. Usually attached to the outer wall.
  2. Indoor unit (see sketch below). Quiet and elegant part mounted on the inside wall (bedroom wall, bathroom wall, basement wall, etc.). It consists of cooling coils, air filter, and a blower.
  3. Refrigerant lines (connection between outdoor and indoor unit). These lines enable the exchange of the refrigerant between the two units. To install it, you need to drill a hole in your wall. Hint: If you can do that yourself, there’s a good chance you can DIY mini split AC installation.
  4. Remote control or/and mobile app. You can lower or raise the temperature, set a programmable timer and so on with remote control. With smart mini split ACs, you can even connect your smartphone and control the whole AC with a simple app.

Here is what the insides of the indoor and outdoor unit consist of:

look inside the ductless mini split air conditioner with air filter, blower, evaporator, and the outside unit with condenser coils and compressor

You always have 1 outdoor unit but you can connect more than 1 indoor unit. The most powerful (and expensive) devices will be able to handle up to 5 indoor units.

Nonetheless, most of the people require a 1 zone mini split AC. That’s why the table of the best ductless units below consist solemnly of the 1 zone mini split AC systems.

What Are The Benefits Of Using A Ductless AC?

The benefits of using a ductless air conditioner instead of ducted one or room air conditioners are quite obvious:

  1. No ducts. That as obvious as it gets; the ductless unit can serve as a help to the central air conditioner or as a stand-alone AC.
  2. Zone cooling. You can actually pick the room you want to cool down. You want to cool down the bedroom? Just install the inside unit on your bedroom’s wall. You don’t even need a window – this makes a perfect air conditioner for basements. You just need to drill a hole in the wall.
  3. Quietness. The outdoor unit creates all the noise (because it contains the compressor). That means that the indoor mini split AC unit is quiet as a cat. The noise levels even go below 50 dB; this is a noise level window air conditioners or portable ones can’t match.
  4. Superb energy-efficiency. The big brands offer mini split units with a SEER rating of 20 or more; which is incredible. With zone cooling, you don’t need to waste the cooling effect on parts of your house you don’t need to be cooled.
  5. Heating. One of the best benefits of ductless AC units is that they often include a high-efficient heater for winter. You can basically use the air conditioner for heating as well.

3 Key Factors To Consider When Buying A Mini Split Unit

Some ductless AC units are obviously better than others.

Here are the 5 rules you have to follow if you want to pick the best ductless AC unit for your house:

1. Right Capacity In BTU (Be Aware Of The Voltage)

Knowing how powerful of a mini split AC you need is the first thing you need to figure out. Usually, we have certain square footage of a room or rooms in mind. Those ones we want to cool down, of course.

The recommendation is to multiply the room size (in sq ft) with 20-30 to get a BTU value. 20 is the most eco-friendly, 30 basically guarantees you won’t buy a ductless mini split AC that’s too weak.

Here are our recommendations for an average household based on available ductless AC sizes:

Capacity (In BTU) Of Ductless ACRoom Size (In Sq Ft)
9,000100-350 sq ft
12,000 (1 ton)350-500 sq ft
18,000500-700 sq ft
24,000 (2 ton)700-900 sq ft
30,000900-1,100 sq ft
36,000 (3 ton)1,100+ sq ft

The 12,000 BTU are the most commonly sold 1-zone mini split ACs. That’s why we have based our comparison of the best mini split ACs by comparing 12,000 BTU models.

Note: With the high capacity mini split units, be aware of the voltage. The 15,000+ BTU devices usually need a higher voltage; 208/230V instead of the standard 110/220V. The high-capacity units will almost always require you to install the 208/230V which will add to the standard installation costs.

2. Which Are The Best Ductless AC Brands?

Taking the brand into account is very important. The reliability and the brand are very firmly connected in this industry.

The big brands have a good track record and can charge well over $1,000 for a ductless AC unit. The lesser-known brand, on the other hand, can be less trustworthy. The upside of this is that they price their units below $1,000; they are trying to build a good reputation.

Big Brands

Namely, there are two big brands: Mitsubishi and LG. They have been in this industry for decades and have a pristine reputation with the mini split AC installers.

In fact, some installers will only be willing to install Mitsubishi ductless AC units because they’re aware of just how reliable they are. They are also more willing to give you a guarantee they’ll come back and fix a Mitsubishi or LG unit without charge. Because they pretty much know how unlikely a Mitsubishi unit is to break down.

The big brands are very careful about they sell their split system AC units. Sylvane, for example, are experts for HVAC and hold big brands such as Mitsubishi, LG, and Panasonic units.

Smaller Brands

Obviously, the lesser-known brands don’t have the length of experience in the engineering mini-split system that the big brands have. That doesn’t mean they aren’t any good; it just means they are in need to prove themselves.

Some smaller brands such as PIONEER, DAIKIN, and Klimaire do offer ductless systems that almost reach (but not breach) SEER 20. They do offer reliable models at a reduced price compared to the big brand name models.

If you want to spend less than $1,000 for a SEER 19 12,000 BTU ductless mini split air conditioner, these lesser-known brands can deliver. The big ones can too but the price there can be up to 50% higher.

3. Energy-Efficiency And Price (Let’s Talk SEER And HSPF And Dollars)

Here at LearnMetrics we especially love metrics. For mini split units, the two energy-efficiency metrics are crucial to understanding:

  • SEER (Seasonal Energy Efficiency Ratio). Measures how energy-efficient the cooling effect of the mini split AC is. Simple rule: The bigger the SEER, the higher the energy-efficiency.
  • HSPF (Heating Seasonal Performance Factor). Same thing as SEER; it’s just for heating instead of cooling.

When determining the energy-efficiency, we really need to look at both the SEER and HSPF. That’s because we don’t use the mini split AC just for cooling but also for heating.

SEER and HSPF affect the electricity bill. As an example, let’s say we use the cooling function 8 hours per day over 3-month summer, and the heating function 4 hours per day over 3-month heat. Also, let’s say that the watt-hour costs 13 cents.

What would be the yearly dollar difference between the #1 AC and the #7 AC on the list? Let’s calculate a bit:

Metrics#1 Mitsubishi MZ-GL12NA#7 DAIKIN RXB12AXVJU+ FTXB12AXVJU
Summer cooling cost:$48,62$66,07
Winter heating cost:$42,87$66,07
Yearly cost:$91,69$132,14

The difference in yearly cost between a superb mini split AC and an above-average one is $40,45. In 20 years, the difference is $809,02.

The funny thing is that the difference in cost between the #1 Mitsubishi MZ-GL12NA and #7 DAIKIN RXB12AXVJU+ FTXB12AXVJU is actually about $700 to $800.

Note: Over the years, the high SEER and HSPF ratings can save you a lot of electricity (compared with average SEER, HSPF rating unit).

It’s no wonder that ductless ACs with extremely high SEER and HSPF cost more than $1,000. Big brands create those. On the other hand, the smaller brands assemble high SEER and HSPF units that cost less than $1,000.

Based on these three metrics (and a bunch of others such as dehumidification rates, airflow, noise levels), we’ve compared the best ductless ACs in the 2020 list:

Comparison Of The Best 12,000 BTU Ductless AC Units

Ductless AC Unit:Photo:Important Metrics:Rating And Price:
#1 Mitsubishi MZ-GL12NA
(Most Energy-Efficient And Best Overall Ductless Mini Split Air Conditioner)
the best mitsubishi mini split ac with a heat pump
Capacity: 12,000
SEER: 23.1 (incredible)
EER: 13 (superb)
HSPF: 13.1 (superb)
Voltage: 220/240V
Noise (Indoor): 49/26 dB
Noise (Outdoor): 49 dB
Dehumidification: 2.5 Pt/h
Air Flow: 533 CFM
Compressor: Inverter (type)
Warranty: Parts (5 years),
Compressor (7 years)
5 out of 5 stars
Check on Sylvane
#2 COOPER AND HUNTER CH-12SPH-115VI/O-WK (WiFi Smart Mini Split + Complete DIY Installation Kit)cooper and hunter CH-12SPH-115VI/O-WK mini split ac with the installation kit, its possible to install the mini split system yourself
Capacity: 9,000, 12,000, 18,000, 24,000, 30,000 or 36,000 BTU
SEER: 21.5 (superb)
HSPF: 11.2 (superb)
Voltage: 115V or 208/230V
Noise (Indoor): 36/32/23 dB
Noise (Outdoor): 52.5 dB
Dehumidification: NaN
Air Flow: NaN
Compressor: Rotary (type)
Warranty: Parts (5 years),
Compressor (7 years)
4.6 out of 5 stars
Check on Amazon
#3 LG LS120HSV5
High Efficiency Model
(Best LG Quiet Mini Split AC)
lg mini split ac with the highest SEER rating
Capacity: 12,000
SEER: 22.7 (superb)
EER: 12.5 (superb)
HSPF: 11.4 (superb)
Voltage: 220/240V
Noise (Indoor): 39/19 dB
Noise (Outdoor): 48 dB
Dehumidification: NaN
Air Flow: 459 CFM
Compressor: Inverter V
Warranty: 5 Year Limited
4.7 out of 5 stars
Check on Sylvane
(Cheap Mini Split AC Unit With Inverter Compressor)
+ Complete Installation Kit
complete set for installing a pioneer mini split AC with the 16ft refrigerant lines, the inner unit to mount on a wall, remote control and the outdoor ventilator
Capacity: 9,000, 12,000, 18,000, 24,000, 30,000 or 36,000 BTU
SEER: 19 (great)
EER: 10.5 (great)
HSPF: 9.5 (great)
Voltage: 110/120V or
Noise (Indoor): 40.5/24 dB
Noise (Outdoor): 54 dB
Dehumidification: 2.54 Pt/h
Air Flow: 500 CFM
Compressor: Toshiba
Warranty: Compressor
(5 years)
4.3 out of 5 stars
Check on Amazon
#5 Senville SENA-12HF/Z (4-in-1 Ductless AC With Heater, Dehumidifier And Fan + Installation Kit)Senville 12 HFZ condensing unit, wall mounted unit, refrigerant lines in neopren and the wi-fi app or alternatively a remote control
Capacity: 9,000, 12,000, 18,000, 24,000 or 36,000 BTU
SEER: 19 (great)
EER: 10.5 (great)
HSPF: 8.5 (average)
Voltage: 110/120V
Noise (Indoor): 43/36/24 dB
Noise (Outdoor): 56 dB
Dehumidification: 2.54 Pt/h
Air Flow: 418 CFM
Compressor: Inverter (type)
Warranty: Parts (2 years),
Compressor (7 years)
4.6 out of 5 stars
Check on Amazon
#6 Klimaire
B07TDR51BW (Quietest And Cheapest Units With A Weaker DC Compressor)
all parts of klimaire B07TDR51BW ac unit in order to DIY install it yourself
Capacity: 9,000, 12,000, 18,000, 24,000 or 36,000 BTU
SEER: 19 (great)
HSPF: 9.5 (great)
Voltage: 115V or 208/230V
Noise (Indoor): 38/30/28 dB
Noise (Outdoor): 55 dB
Dehumidification: NaN
Air Flow: 294 CFM
Compressor: Inverter (type)
Warranty: Manufacturer
waranty (5 years)
4.3 out of 5 stars
Check on Amazon
FTXB12AXVJU By Maxwell
(AC Unit With The Best 10 Year Limited Warranty + Installation Kit)
maxwell made daikin ductless mini split ac you can install yourself with the help of the wall unit, compressor and the refrigerant line 15 feet long
Capacity: 9,000, 12,000,
18,000 or 24,000 BTU
SEER: 17 (average)
EER: 10.5 (average)
HSPF: 8.5 (average)
Voltage: 208/230V
Noise (Indoor): 41/34/30 dB
Noise (Outdoor): 48 dB
Dehumidification: NaN
Air Flow: 358 CFM
Compressor: Inverter (Type)
Warranty: 10-year
limited warranty
4.4 out of 5 stars
Check on Amazon

#1 Mitsubishi MZ-GL12NA (Best Of The Best)

Just one look at the MZ-GL12NA model and you can immediately tell the specs are just incredible. I mean, some units do manage to create a ductless mini split AC with a SEER over 20.

Mitsubishi, with many decades of experience, has engineered the MZ-GL12NA model with a SEER of 23.1. Every HVAC expert’s heart jumps when seeing such tremendous energy-efficiency. This makes the MZ-GL12NA the ductless mini split AC with the highest SEER rating. And that’s just the cooling part.

The heating efficiency is even more out of everybody’s league. The HSPF rating is 13.1. The 2nd best unit on this list has an HSPF rating of 11.4. To put it into perspective: the Mitsubishi’s best mini split is almost 15% more energy efficient in the winter as one of the most efficient mini split systems. Just wow!

What is more, the incredible inverter compressor MZ-GL12NA is capable of producing the record-breaking 533 CFM (cubic meters of air) airflow. The compressors – the heart of every ductless mini split system – and the thing responsive for incredible specs, in hidden in the outdoor unit you can install on your outer wall:

mitsubishi ductless air conditioner's outdoor unit with fan and compressor
Mitsubishi MZ-GL12NA outdoor unit: This is where the remarkable inverter compressor is located. Record-breaking energy-efficiency and powerful airflow.

With such tremendous power, you would think that this thing will be loud as hell. Well, it’s not. All the noise levels are created by the outdoor unit (that contains the inverter compressors) and even this unit doesn’t breach the 50 dB. In fact, the maximum noise levels of the Mitsubishi’s MZ-GL12NA outdoor unit is 49 dB.

The indoor unit (the one you will see more frequently) is connected with the outdoor unit via a refrigerant line. All the power of the Mitsubishi compressor is transferred right into your home.

Additionally, the MZ-GL12NA has a built-in dehumidification function. It’s capable to remove up to 2.5 pints of moisture from your indoor air every hour.

MZ-GL12NA indoor unit with air filter, blower and evaporator coils
MZ-GL12NA indoor unit: Elegant and hardly noticeable. It contains the evaporator coils, air filter, and blower.

All that 533 CFM air flow goes through the blower. The air filter is the only part that needs some maintenance; vacuuming it once per month should do the trick.

The main drawback of the MZ-GL12NA model is the high electricity voltage – 220/240V. That means your mini split installer will probably have to upgrade your electricity grid. This is very reasonable, however; it’s impossible to deliver such power (with the 14,400 BTU heater, mind you) with a standard voltage.

Obviously, you also have to consider the price. Mitsubishi has created the best ductless mini split system, and its cost reflects that. Nonetheless, having a superb and, above else, a reliable system with the 5/7 warranty is the wet dreams of every HVAC engineer.

Due to big demand, it can sometimes be unavailable to purchase right away. There’s a line, and you can pre-order it.

Mitsubishi MZ-GL12NA 12,000 BTU AC And 14,400 BTU Heater

  • Record-breaking energy efficiency for AC (SEER = 23.1) and heater (HSPF = 13.1)
  • Incredible air flow (533 CFM)
  • One of the quietest indoor units (min. 29 dB)
  • Heater + Dehumidifier functions (2.5 Pt/h dehumidification rate)
  • Industry’s best possible warranty (5 years on parts, 7 years on compressor)
  • The most reliable brand: Mitsubishi
  • Premium materials (can last for 20+ years)
  • Affordable considering the record-breaking specs
  • Needs 220/240 voltage
  • Has a premium price tag
  • Can’t be controlled with a smartphone (only remote control)

#2 COOPER AND HUNTER CH-12SPH-115VI/O-WK (WiFi Smart Mini Split With DIY Installation Kit)

Obviously, every ductless mini split AC unit you can install yourself is that much more valuable because you don’t have to pay the installer.

Nonetheless, lets first look at the COOPER AND HUNTER CH-12SPH-115VI/O-WK specs because they are quite fantastic (especially for the price).

Every time we see a SEER rating above 20 we ask “Wow, great, but what’s the price?” That’s because the super high SEER ductless mini split ACs cost $1,500 or more. Because, you know, in 10 years you are expected to get all this money back due to lower electricity bills.

Well, the COOPER AND HUNTER has put together a unit with 21.5 SEER for (a bit) less than $1,000. That’s just something you don’t really see every day. Add to that a superb 11.2 HSPF heaters; it’s just crazy how great these specs are.

So, this can’t be all gold for $1,000, right? Well, it’s not. The CH-12SPH-115VI/O-WK has a very low capacity as far as it’s dehumidification levels are concerned. Also, the air flow is rather weak. That’s because they used the cheaper (but still energy-efficient) rotary type compressor.

Nonetheless, besides the great specifications, the two main advantages of the COOPER AND HUNTER ductless unit are the WiFi connection and, above all else, the DIY installation process.

Yes, this is a mini split system you can install yourself. The only thing you’ll need to do is to drill a hole in your wall, everything else comes in a DIY installation kit:

COOPER AND HUNTER CH-12SPH-115VI/O-WK Installation kit includes: Outdoor consdenser, indoor unit, line set, comm wires and a WiFi USB adapter
Installation kit includes: Outdoor condenser, indoor unit, line set, communication wires, and a WiFi USB adapter.

The ductless mini split AC installation manual will guide you through the installation process. To simplify, you have to connect the indoor unit with the outdoor condenser via insulted and pre-flared line set and communication wires.

That will require you to drill a hole in the wall and mount both the indoor and outdoor unit on your wall. The 12,000 BTU COOPER AND HUNTER unit can be powered by the standard 115V (you can also get a 12,000 BTU 230V unit). More powerful units, however, will need a 208/230V voltage.

Along with the purchase, you get the industry’s best warranty (5 years for parts, 7 years for the compressor). This is one of the quietest mini split system with an indoor unit making low 36/32/23 dB noise levels.

The additional trick up the CH-12SPH-115VI/O-WK sleeve is the WiFi connection. When you’ve installed the AC unit, just plug in that USB key and you’ll be able to control your ductless unit via WiFi.

Mitsubishi MZ-GL12NA 12,000 BTU AC And 14,400 BTU Heater

  • Easiest ductless AC to install yourself (with included installation kit)
  • Super air cooling (SEER = 21.5) and heater (HSPF = 11.2) energy-efficiency ratings
  • One of the quietest indoor units (36/32/23 dB)
  • Industry’s best possible warranty (5 years on parts, 7 years on the compressor)
  • Smart mini split AC – Can be controlled via WiFi)
  • Very affordable (less than $1,000)
  • Below average dehumidification levels
  • Below average air flow
  • Rotary compressor type

#3 LG Inverter V LS120HSV5 (The Most Quiet And Reliable Unit)

Nobody wants a loud and power-hungry AC unit that frequently breaks down. LG has developed it’s best mini split AC based on three distinct advantages:

  1. The quietest ductless unit.
  2. The most energy-efficient unit.
  3. The most reliable unit.

With that in mind, the LS120HSV5 – LG’s best ductless mini split AC – was created. In short, they’ve managed to score 2 out of 3. The LS120HSV5 is the quietest and most reliable but, despite being incredibly energy-efficient, the 1st spot for energy-efficiency was taken by Mitsubishi’s MZ-GL12NA (#1 pick in this 2020 list).

Let’s listen to how quiet it is. Do you hear that? No? That’s the silent purr of the LG’s 39/19 dB indoor blower. For comparison, 10 dB is the noise of breathing and 20 dB is the noise created by rustling leaves. Well, the most silent LG mini split is, on low setting, quieter than rustling leaves.

The outside unit, on the other hand, is powered by the silent Inverter V compressor. The noise levels on the wall-mounted outside unit is 48 dB or less:

secret to lg most quiet ductless mini split ac in a quiet compressor and even quieter blower
LG LS120HSV5 is the most quiet mini split AC thanks to the Inverter V compressor and a silent blower.

Reliability and LG go hand in hand. LG is one of the biggest brands in the HVAC industry. They know how important it is to make a reliable device. It’s no wonder the LS120HSV5 model is a unit that almost never needs additional fixes or maintenance.

One side effect of the upgraded reliability is the 2nd place for energy-efficiency. With the superb 22.7 SEER and 11.4 HSPF ratings, the LG’s ductless AC unit is incredibly energy-efficient. However, the #1 Mitsubishi unit has the edge here; primarily because LG priorities reliability above all else. This, in turn, meant they decided not to go in extremes with the energy-efficiency specs.

The LG’s Inverter V compressor runs on 220/240V which is not ideal for people who don’t already have a 220/240V grid. The airflow of 459 CFM just shows you that the LG created a great specs unit while still prioritizing the reliability.

All in all, the proficiency of LG HVAC device is reflected in the LS120HSV5 model, as is the price. This is one incredible ductless mini split unit, to say the least.

LG Inverter V LS120HSV5 12,000 BTU

  • The most quiet AC unit with 19 dB on low setting
  • Reliability is prioritized (little to no fixes needed/no breakdowns)
  • Extremely high cooling efficiency (SEER = 22.7) and heating efficiency (HSPF = 11.4)
  • Inverter V compressor
  • 5 year limited warranty
  • The most reliable brand: LG
  • Premium materials (can last for 20+ years)
  • Needs 220/240 voltage
  • Has a premium price tag
  • Can’t be controlled with a smartphone (only remote control)
  • Not the most novel model

#4 PIONEER WYS012GMFI17R (Cheap Best-Seller With Toshiba ASN98D22UFZ Compressor)

PIONEER WYS012GMFI17RL is, at first, a mystery. It’s a ductless mini split AC with tremendous specs. However, it does cost less than $1,000. Obviously, the less-known brands such as PIONEER do price their ductless AC lower but the specs are usually lower.

How has PIONEER achieved to create a cheap mini split AC with the impressive big-brand big-buck specs? I mean, the WYS012GMFI17RL does have a very high SEER level of 19.

Well, the reason is quite simple. The heart of every mini split system in the compressor. While the standard compressor is of rotary type, the PIONEER decided to go for the upgraded inverter type. Did they develop it themselves? Not at all.

Here the simple an ingenious move that explains the great specs: PIONEER decided to build-in the Toshiba’s ASN98D22UFZ compressor. That is how the WYS012GMFI17RL is capable of achieving the SEER levels of 19, HSPF levels of 9.5 (for heater), and the incredible 500 CFM airflow.

pioneer WYS012AMFI19RL with the outdoor unit, indoor unit, refrigerant line and a remote control
PIONEER’s genius decision: Use the superb Toshiba’s Inverter+ compressor and get a great-specs mini split AC for less than $1,000.

Toshiba is one of the best compressor makers in the world. They add those big brand experiences in building compressors to a rigid and capable ductless mini split shell of the PIONEER’s WYS012AMFI19RL AC unit.

The noise levels of the outside unit, however, are quite high – 54 dB. But what truly matters is how quiet the indoor unit is. With the 40.5/24 dB noise profile, it’s one of the quietest indoor mini split AC units.

With the air conditioning, you also get an energy-efficient heater for winter as well as a dehumidifier (with 2.54 Pt/h levels).

PIONEER offers this model in many different capacities; 9,000, 12,000, 18,000, 24,000, 30,000 or 36,000 BTU. The great thing about the 12,000 BTU is that you can choose the one running on 110/120V or 208/230V. With the more powerful 15,000+ BTU units, you will need an upgrade to a 208/230V voltage.

All in all, PIONEER has created a low-priced ductless unit with superb specs thanks to the Toshiba’s ASN98D22UFZ compressor.

PIONEER WYS012AMFI19RL 9,000 - 36,000 BTU

  • High energy-efficiency at a low cost (SEER = 19, HSPF = 10.5)
  • Secret: Toshiba Inverter+ compressor
  • Widest range of capacities available: 9,000, 12,000, 18,000, 24,000, 30,000 or 36,000 BTU
  • Heater + Dehumidifier functions (2.54 Pt/h dehumidification rate)
  • Toshiba’s compressor has a 5 year warranty
  • Incredible 500 CFM air flow
  • Comes with the installation kit including the easy-install 16ft copper piping kit; you can DIY the installation
  • Very cheap and the best-seller among ductless mini split ACs
  • Louder than average outdoor unit (54 dB)
  • Made by a lesser-known brand
  • Can’t be controled with smartphone

#5 Senville SENA-12HF/Z (Cheapest Unit For Less Than $800)

If you’re looking for the best cost-benefit mini split unit, you need to look no further than the Senville SENA-12HF/Z. This is a 4-in-1 ductless air conditioner + heater + fan + dehumidifier for less than $800.

And if you really don’t like to spend money on AC installers, here’s a bonus: You can DIY the installation with the installation kit you get with the Senville SENA-12HF/Z air conditioner.

With great cooling-efficiency rating (SEER = 19), it’s not hard to see why the SENA-12HF/Z is a best-seller ductless mini split AC unit.

Here are both the indoor and outdoor units with all  you need to DIY the installation yourself:

senville SENA-12HF/Z installation kit with 16 feet log copper line set
Senville SENA-12HF/Z is the cheapest ductless AC model. You can even DIY the installation with the easy installation kit (comes in the package).

To install the Senville unit yourself, you will have to mount both of the units on the internal and external side of your wall, and drill a hole in between. The added 16 feet copper line set goes in that wall; just follow the included guide and you should be fine.

The SENA-12HF/Z has a strong dehumidifier that is capable of extracting 2.54 pints of water out of your air every hour. The strong 418 CFM enables all the great energy-efficiency, cooling, heating and dehumidification metrics.

The bad parts of the Senville mini split AC unit are the higher-than-average noise levels (43/36/24 dB for indoor unit), the average heating-efficiency with HSPF rating of 8.5 and only 2-year warranty on parts (instead of the standard 5-year).

The whole point of the Senville unit is to decrease the cost as much as possible while still maintaining the great specs. The inverter compressor is powered by 110/120V so you won’t have to upgrade your electricity grid and you can even install the whole mini split system yourself with a bit of technical skills.

Senville SENA-12HF/Z 9,000 - 36,000 BTU

  • Great specs for a $800 unit (SEER = 19)
  • Inverter compressor with 7 year warranty
  • Wide range of capacities available: 9,000, 12,000, 18,000, 24,000 or 36,000 BTU
  • Heater + Dehumidifier functions (2.54 Pt/h dehumidification rate)
  • Powered by a standard 110/120V voltage (no need for upgrades)
  • Strong 438 CFM air flow
  • Comes with the installation kit including the easy-install 16ft copper piping kit; you can DIY the installation
  • Cheapest and the best-seller among ductless mini split ACs
  • Can be a bit noisy, especially the outside unit with 56 dB
  • Made by a lesser-known brand
  • Only 2 year warranty for parts
  • Average HSPF heater-efficiency levels of 8.5

#6 Klimaire B07TDR51BW (New Up-And-Coming Inexpensive Brand)

Klimaire is a new brand in HVAC world. Their flagship mini split AC is the B07TDR51BW model that has reasonably high specifications. Nonetheless, Klimaire doesn’t have that great length of experience Mitsubishi and LG have in designing mini split units.

What the Klimaire has going for it is the below $1,000 price tag and the inclusion of the installation kit.

What is more, the 19 SEER rating and the 9.5 HSPF rating are quite decent. The noise levels of 38/30/28 dB for the indoor unit make the Klimaire one of the most silent mini split AC units (we’ll see how Klimaire enginners have achieved such low noise levels in a second).

Here’s how the whole installation kit with the indoor and outdoor unit looks like:

wiring and cables of B07TDR51BW klimaire installation kit with both indoor and outdoor unit shells
Klimaire B07TDR51BW is one of the quietest and cheapest mini split AC units. It comes with the installation kit.

The ‘secret’ behind the low noise levels is the weaker-than-average KSIV012-H119-S(W) DC inverter compressor. It generates only 294 CFM air flow. That means both the outdoor unit and the indoor unit are that much quieter. If the indoor blower doesn’t have to handle 500 CFM, it will obviously make less noise.

The KSIV012-H119-S(W) DC compressor is also cheaper-than-average; which explains the low price point as well. You can plug it in the standard 115V voltage if you go for a 1 ton (12,000 BTU) unit which is nice.

Similar to Senville and PIONEER, Klimaire offers a wide range of capacities; from 9,000 BTU to 36,000 BTU.

All in all, the B07TDR51BW model is a true cost saver and delivers a solid cooling as well as heating effect.

Klimaire B07TDR51BW 9,000 - 36,000 BTU

  • Very quiet indoor unit (38/30/28 dB)
  • Wide range of capacities available: 9,000, 12,000, 18,000, 24,000 or 36,000 BTU
  • Heater + Dehumidifier functions
  • 5 year manufacturer’s warranty
  • Powered by a standard 115V voltage (no need for upgrades)
  • Comes with the installation kit including the easy-install 15ft copper piping kit; you can DIY the installation
  • Very budget-friendly price
  • Outside unit is not as quiet as some would like (55 dB)
  • Made by a lesser-known brand
  • Weak KSIV012-H119-S(W) DC compressor
  • Low air flow (294 CFM)
  • Can breakdown more than the Mitsubishi or LG devices

#7 DAIKIN RXB12AXVJU+ FTXB12AXVJU (Reliable Unit With Best 10-Year Warranty)

DAIKIN is one the most popular smaller mini split AC brands. With their RXB12AXVJU+ FTXB12AXVJU model, they put the reliability first. It’s only sad to see that great specs were the cost of having great reliability.

Without a doubt, the DAIKIN RXB12AXVJU+ FTXB12AXVJU will serve you well. Nonetheless, the energy-efficiency metrics (SEER = 17 and HSPF = 8.5) are pretty in line with the average specs in the industry.

The whole installation kit you get can make for a cool DIY project:

DAIKIN mini split AC installation kit; a nice cost-saving DIY project first, cool down later.

The indoor unit noise levels of 41/34/30 dB are quite average. But it does need to be said that the air flow if only 358 CFM. Its easier to design a silent mini split AC if you have a reduced air flow rate.

The best thing about the DAIKIN device is the reliability coupled with the 10-year warranty. That effectively means you will have to sweat less when thinking about AC breakdowns.


  • Very reliable mini split AC
  • Wide range of capacities available: 9,000, 12,000, 18,000 or 24,000 BTU
  • Heater + Dehumidifier functions
  • 10 year manufacturer’s warranty
  • Comes with the installation kit
  • Very budget-friendly price
  • Average noise levels
  • Weaker-than-average compressor with 358 CFM
  • Not that great energy-efficiency levels (SEER = 17)

Help Us Upgrade And Improve List With Your Suggestions

We make this list to help people decide which ductless mini split systems are best for them.

If you have a personal experience with a certain AC, or are AC installer, you are more than welcome to share your thoughts below.

We are always updating the 2020 list in order to get even the freshest models with the high specs in.

Thank you.

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