Best 12000 BTU Mini Split

The Best 12000 BTU Mini Split Options

Finding an energy-efficient cooling or heating solution for relatively small spaces can be difficult since the window and portable ACs consume a lot of power. Getting one of the best 12,000 BTU mini-splits is arguably your best option if you need a system with a relatively small coverage area.

Most units are multi-functional, and you can use them for much more than just to heat or cool a room, as they can help you ventilate a space or regulate the air humidity. In addition, 12,000 BTU mini-splits are more affordable than other heating and cooling systems with similar performance capabilities.

In this article, we’re going to provide you with the information you need to choose a 12,000 BTU mini-split that meets all of your requirements. You should read our guide to the best 18000 BTU air conditioners if you need a unit with slightly larger coverage than a 12,000 BTU mini-split.

At a Glance – The 5 Best 12,000 BTU Mini-Splits

Model  Energy Efficiency  WiFi-enabled Price range
Daizuki – DXTH12X426-20 19 SEER Yes $$$
Della 12,000 BTU mini-split 17 SEER No $$$
Daikin 12,000 BTU mini split 17 SEER No $$$$
MrCool 12,000 BTU mini-split 22 SEER Yes $$$$$
Barton 12,000 BTU mini-split Not available Yes $$

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Selection Criteria

Despite having identical power output, the performance capabilities of 12,000 BTU mini-splits vary from model to model. Our selection criteria were based on the unit’s price-performance ratio, so let’s look at some of the parameters we utilized to select the best 12,000 BTU mini-splits.

  • SEER and EER ratings – The model’s seasonal and daily power consumption was our primary selection criterion, as we only considered models that have energy efficiency rating SEER 17 or higher.
  • Heating options – Besides the unit’s cooling capacities, we also factored in its heating capabilities during the selection process. Hence, most mini-splits you’ll find in this article can regulate the room temperature in all seasons.
  • Advanced controls – We only considered models that offer multiple control options that increase the operator’s comfort level. Hence, most units we featured in this article can be controlled with a smartphone.
  • Affordability – We added the average installation costs to the unit’s base price to calculate its affordability. As a result, we selected the most budget-friendly models from all price tiers.

Calculating the coverage area

The heating and cooling capacities of mini-splits are measured in British Thermal Units, denoting the unit’s maximum output.

These systems need approximately 20 BTUs to heat or cool 1sq/ft of floor space, so a 12,000 BTU or a 1-ton mini-spit can control room temperature in spaces smaller than 550sq/ft.

Some manufacturers claim that their 1-ton mini-split models can heat or cool up to 750sq/ft of floor space, but you should approach these claims with caution since the unit’s coverage doesn’t solely depend on it its output.

Knowing the size of the area in which you want to control the temperature will help you determine if a 1-ton mini-split is a good choice for you. For example, getting a unit with a 9,000 BTU or 18,000 BTU output might be a better choice if the room’s size is too big or too small for a 1-ton mini-split.

Browse through our guide to the best window heat pumps if you’re searching for an alternative to mini-split systems.

Dividing a mini-split into zones

Single-zone mini-splits

All mini-splits feature two components, an outdoor compressor unit, and an indoor air handler, but they can have up to five indoor units depending on the type.

  • Single-zone mini-splits – Most 12,000 BTU mini-splits have just one air handler, which means that you cannot divide their output into multiple zones. You cannot turn a single-zone unit into a multi-zone unit by adding more air handlers to the system.
  • Multi-zone mini-splitsThe output of a mini-split can be divided between several air handlers installed in separate rooms. The maximum number of air handlers these systems can have is limited to 5, and an individual air handler can have an output capacity of 12,000 BTUs.

That’s why you need to decide if you want to get a single-zone unit with a 1-ton cooling or heating capacity or a multi-zone system with several air handlers with 12,000 BTUs. Go through our guide to mini-split systems if you want to learn more about how these systems work.

What is an inverter mini-split?

One of the terms you’re likely to encounter while searching for a 1-ton mini-split is inverter technology. Knowing this technology might make it easier to understand the unit’s performance capacity.

A mini-split equipped with this technology adjusts the speed of the compressor’s motor. The motor is controlled through a variable-frequency drive that converts the AC into DC.

Consequently, the motor doesn’t switch off whenever the system reaches the temperature you set on the thermostat but rather turns idle until the room temperature changes. This lowers the system’s power consumption and reduces its noise level.

In addition, units that utilize the inverter technology need less time to reach the set temperature and maintain it at the same level as traditional constant speed mini-splits. Also, their components last longer since they’re not exposed to frequent load oscillations that can damage different parts of the system.

Read our guide to the best 4-ton AC systems to find a whole-house heating and cooling solution.

Energy-saving features

Mini-splits are among the most energy-efficient heating and cooling systems, as they consume significantly less power than central HVAC systems or heat pumps. The inverter technology is a part of why these units have exceptional SEER, HSPF, and EER ratings.

Even the least expensive 12,000 BTU mini-splits have high SEER ratings since their average seasonal energy efficiency ratio is 17. However, you should keep in mind that these systems consume more power for heating than for cooling.

Mini-splits are commonly utilized as a supplementary heating source because they’re not the most energy-efficient heating option. Also, getting an Energy Star certified model will ensure that your 12,000 BTU mini-split isn’t going to consume vast amounts of electricity.

However, Energy Star certified units equipped with the inverter technology are considerably more expensive than standard constant speed mini-splits. Check out our guide to the best portable GE air conditioners if you need a unit, you can move easily from one room to another.

Heating and cooling capacities of mini-splits

Mini-splits are primarily cooling systems designed to regulate the temperature in different types of spaces. Nonetheless, units with only cooling features are used only in warm-climate regions, and most models on the market have both heating and cooling modes.

You must check if the model you want to get has a heat pump functionality to ensure that you can use it to heat your home. The lowest operating temperature of most 12,000 BTU mini-splits is 5F, although some models can operate at half capacity even when outdoor temperatures drop to -15F.

The coverage range of 1-ton mini-splits is the same when they’re used for cooling and heating, while their room temperature range usually spans from 60F to 90F. Go through our guide to cooling systems for more information on how these systems work.

The most important factors to consider while choosing a 12,000 BTU mini-split

Mini Split

There are no limitations in terms of contexts in which you can use 1-ton mini-splits, as they’re equally effective in commercial and residential settings. However, their coverage range makes them suitable for use in spaces that have up to 550sq/ft.

Furthermore, the vast majority of 12,000 BTU mini-splits have just one indoor air handler, and you can’t divide their output into several zones. Taking these and multiple other aspects into account will make it easier to find a 1-ton mini-split that fits your requirements.

Let’s take a look at the factors that can assist you during your search for a 12,000 BTU mini-split.

The position of the indoor air handler

The layout of the room usually determines where the wall-mounted air-handler is going to be installed. In case the air handler is installed next to a window or barrier that obstructs the free flow of air, its location can limit the unit’s cooling and heating capabilities.

On the other hand, installing an indoor air-handler at an ideal position isn’t always possible since an installation kit might not be long enough, or the unit might be too large to fit the spot you selected.

That’s why you need to check the length of the refrigeration lines in order to know how far the unit’s indoor and outdoor components can be.

Available control options

All 12,000 BTU mini-splits you can find on the market come with a remote that lets you adjust their settings from anywhere within the room. WiFi-enabled models allow you to control their output from your smartphone or tablet using home management apps.

You don’t have to be close to these units to switch them on or program them since they can be controlled from anywhere as long as you have internet access.

This feature isn’t always built-in, and some mini-splits are sold separately from the accessories that allow you to connect them to a WiFi network.

Operating temperatures

The unit you choose will have the highest and the lowest operating temperature. Checking these values is particularly important if you want to use your 1-ton mini-split for heating since some models can’t operate at full capacity at subzero temperatures.

Moreover, some units cannot function at all if the outdoor temperatures drop below 5F. The upper-temperature limit depends on the model, but in most cases, mini-splits remain fully functional at temperatures as high as 130F.

Opting for a 1-ton mini-split that can supply you with cool air at extremely high temperatures can be important for homeowners who live in warm climate regions.

The complexity of the installation process

Although installing a mini-split is much easier than installing a central HVAC system, this process is still far from easy. Besides positioning the indoor air handler correctly, you also need to find a suitable position for the outdoor compressor, connect the refrigeration lines, and sort out the system’s wiring.

What’s more, attempting to install a 12,000 BTU by yourself might void its warranty since some manufacturers require a professional installation.

The installation costs will significantly increase the initial cost of the system, as you may have to spend more than $500 to hire a contractor who can install a 1-ton mini-split for you.

The unit’s price and warranty coverage

1-ton mini-splits are among the most affordable versions of these heating and cooling systems since their cost increases with their output capacities. The least expensive models cost around $500, while high-end options are priced at approximately $1500.

The unit’s warranty might not be the same for all of its components, so the outdoor compressor can be under warranty longer than other parts. Also, the duration of the warranty depends on the manufacturer and spans from a few years to a lifetime.

The advantages of 12,000 BTU mini-splits

12,000 BTU mini-split

Energy-efficient performance

High SEER and EER ratings of most 12,000 BTU mini-splits are excellent indicators of their power-saving capabilities. In addition, the majority of these units are equipped with inverter technology that lowers their power consumption.

Quiet operation

When compared to heat pumps or central HVAC systems, mini-splits generate significantly less noise. A 12,000 BTU mini-split produces between 30dB and 40dB of noise, and it is less noisy than most home appliances.

Affordable price

The average cost of a 1-ton mini-split equipped with the heat pump function and inverter technology is around $800. This makes them more affordable than most alternative heating and cooling solutions with a similar coverage range.

The disadvantages of 12,000 BTU mini-splits

No multi-zone options

These units usually feature just one indoor air handler, and you cannot use them to control the temperature in multiple zones. That’s why their heating and cooling capabilities often depend on the air handler’s position.

Top 5 12,000 BTU mini-splits

Daizuki – DXTH12X426-20 – The best low temperature 12,000 BTU mini-split


Home and business owners who are searching for a 1-ton mini-split they can rely on regardless of the season may benefit from getting the Daizuki – DXTH12X426-20 mini-split. This model can operate at full heating capacity at temperatures higher than 20F or half-capacity at temperatures higher than -13F.

The unit has a 19 SEER rating partly because it utilizes the Full Inverter Technology that minimizes its power consumption and reduces the noise level. This Daizuki’s model has a built-in WiFi technology that enables you to control it through an app on your smartphone.


  • Remains functional at low temperatures
  • Multiple operating modes
  • Excellent SEER rating
  • Low noise level


  • 2-year warranty for the parts
  • It doesn’t have a dehumidifier feature

Della 12,000 BTU mini-split – The best 12,000 BTU mini-split for commercial use


The variety of modes the Della 12,000 BTU mini-split offers makes it a great addition to both residential and commercial spaces. You can operate the unit in the Eco mode, program it or adjust its fan speed.

Besides, this mini-split enters the Defrost mode automatically, while its Self-Diagnosis feature detects all issues the system encounters. This Della model features the heat pump function, but you cannot use it at temperatures lower than -4F.

The unit’s remote has the I Feel It feature that activates it as soon as the room changes at the remote’s current location.


  • Inverter technology reduces the power consumption
  • Eco-friendly refrigerant
  • Reaches the selected room temperature quickly
  • The condenser coil is corrosion-resistant


  • Not WiFi-enabled
  • Complicated installation process

Della 12,000 BTU Mini-Split | Amazon

This 12000 BTU/h, 17 SEER, 115V/60Hz, 9 HSPF, AHRI Certified pre-charged air conditioner unit features a ductless mini-split inverter plus a system with a heat pump and dehumidification.

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Daikin 12,000 BTU mini-split – The quietest 12,000 BTU mini-split


The Daikin 12,000 BTU mini-split might be a great solution for you, If you’re searching for a mini-split, you can install it in your bedroom. The unit makes just 23dB of noise when it operates at full capacity, which makes it one of the quietest mini-splits on the market.

Even though it has a heat pump function, you can only use this feature if the outside temperature is above 5F. The Daikin inverter technology this mini-split uses prevents sudden temperature changes and minimizes the amount of energy the system needs to maintain a constant room temperature.


  • Ultra-quiet operation
  • High SEER and HSPF ratings
  • The heat exchanger has an anti-corrosion coating
  • The long warranty period for all components


  • Remote control only
  • It doesn’t perform well at low temperatures

Daikin 12,000 BTU Mini-Split | Amazon

As you think about the functionality of your home's indoor comfort system, the Daikin brand is ready to help you achieve control, energy efficiency and long-term peace of mind. 

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03/11/2024 02:12 am GMT

MrCool DIY-12-HP-115B25 mini-split – The most energy-efficient 12,000 BTU mini-split

MrCool DIY

The variable-speed inverter compressor grants you complete control over the output of the MrCool DIY-12-HP-115B25 mini-split. This model has an impressive 22 SEER rating, and it is one of the most energy-efficient mini-splits you can get.

What’s more, the mini-split can cool a room down to 5F, which makes it an ideal solution for server rooms and other spaces that need extensive cooling. The unit is digital assistant ready, and you can control it with Amazon Alexa or Google Assistant.


  • Auto-restart feature starts the mini-split automatically after a power outage
  • Energy Star certified
  • Adjusting the fan and compressor speed is easy
  • 7-year compressor warranty


  • More expensive than similar models
  • Flimsy construction

MRCOOL DIY DIY-12-HP-115B 3rd Generation | Amazon

When it comes to doing it yourself, the MRCOOL 3rd Generation Enhanced DIY is for making you. The included 25′ pre-charged line set allows you to install this innovative ductless system without special tools, equipment, or training.

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03/10/2024 06:54 pm GMT

Barton 12,000 BTU mini-split – The most budget-friendly 12,000 BTU mini-split


The Barton 12,000 BTU mini-split lets you switch between Dry, Cool, Warm, Fan, and Auto modes with ease so that you can select the mode that best suits your current needs. Even though the mini-split utilizes the inverter technology, it is less energy efficient than models produced by other manufacturers.

In addition, the unit’s EER, SEER, and HSPF ratings aren’t available, which makes it difficult to check how energy-efficient it is. This 1-ton mini-split produces between 30dB and 41dB of noise, and it cannot function at temperatures lower than -4F.


  • More affordable than most 12,000BTU mini-splits
  • Multiple control options
  • Programmable timer
  • Automatic detection of temperature changes


  • The installation kit must be purchased separately
  • Some components are made of plastic

Barton 12,000 BTU Mini Split Air Conditioner | Amazon

A great way to cool your home all year round. Designed with Inverter technology, our air conditioner provides you with an efficient way to give your home complete climate control.

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Frequently asked questions

Question: Do 12,000 BTU mini-splits have an eco-friendly refrigerant?

Answer: Yes, they do. Most models utilize the non-ozone depleting R-410A refrigerant.

Question: What is the average lifespan of a 12,000 BTU mini-split?

Answer: You can use a 1-ton mini-split for more than 10 years if you take proper care of its components.

Question: Which voltage do 12,000 BTU mini-splits use?

Answer: A 12,000 BTU mini-split can either have 120V or 220V, and you must make sure that the model you choose is compatible with the voltage of your home’s electrical system.

Question: Do all 12,000 BTU mini-splits come with installation kits?

Answer: Even though most 12,000 BTU mini-splits feature installation kits, in some cases, you have to purchase the installation kit separately.

Our Verdict: How to Choose the Right 12,000 BTU Mini-Split

The majority of 12,000 BTU mini-splits are equipped with similar sets of features, as they usually have both heating and cooling capabilities and allow you to control their output. Furthermore, their coverage range is limited to approximately 550sq.ft.

That’s why you should search for the most economic unit that will enable you to lower your monthly utility bills. We recommend the Daizuki – DXTH12X426-20 mini-split because it has a high SEER rating, and it performs remarkably well at low temperatures.

The MrCool DIY-12-HP-115B25 mini-split can be a good solution for you if you want to have more control over the unit and you don’t mind its high price tag.

MRCOOL DIY DIY-12-HP-115B 3rd Generation | Amazon

When it comes to doing it yourself, the MRCOOL 3rd Generation Enhanced DIY is for making you. The included 25′ pre-charged line set allows you to install this innovative ductless system without special tools, equipment, or training.

Buy at Amazon
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03/10/2024 06:54 pm GMT

Which 12,000 BTU mini-split are you going to choose? Let us know in the comments, or continue reading our guide to water heaters if you’re looking for an efficient way to heat water in your home or check out some of the best:

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