8 Best Ductless Mini Splits in 2026

Contents
  1. The Top 8
  2. Top 8 Ductless Mini Splits Reviewed in Detail
  3. 1. Top Pick
  4. 2. Best for Daily Use
  5. 3. Best Compact
  6. 4. Best for Beginners
  7. 5. Best Premium
  8. 6. Best Value
  9. 7. Best Design
  10. 8. Runner-Up
  11. Ductless Mini Splits Compared Side by Side
  12. How to Choose Ductless Mini Splits
  13. How We Reviewed
  14. Frequently asked questions
  15. What to look for

You want the best ductless mini split for your space. The Rellytech 11500 BTU Mini Split AC/Heating System is our top pick. It covers up to 550 square feet, making it perfect for smaller homes or rooms. For those looking to save money, the YITAHOME 12000 BTU Mini Split is the best value. It has a slightly lower energy efficiency rating but still performs well in cooling and heating.

Most buyers must decide between size and energy efficiency, which can impact your comfort and bills. This page will help you compare each model’s features and specs to find the right fit for your home.

Paid links. We earn a commission from qualifying purchases at no extra cost to you. Prices are pulled live from Amazon and change often. How this works

The Top 8

1
YITAHOME 12000 BTU Mini Split AC/Heating System 115V 20 SEER2
YITAHOME 12000 BTU Mini Split AC/Heating System 115V 20 SEER2
Amazon.com
2
Rellytech 11500 BTU Mini Split AC/Heating System 17 SEER2 Ductless Inverter
Rellytech 11500 BTU Mini Split AC/Heating System 17 SEER2 Ductless Inverter
Amazon.com
3
Rellytech Mini Split AC/Heating System, 12000 BTU, 19 SEER2 115V/110V
Rellytech Mini Split AC/Heating System, 12000 BTU, 19 SEER2 115V/110V
Amazon.com
4
Rellytech Mini Split AC/Heating System, 18000 BTU, 19 SEER2 208-230V
Rellytech Mini Split AC/Heating System, 18000 BTU, 19 SEER2 208-230V
Amazon.com
5
Albott 12,000 BTU Mini Split Air Conditioner and Heater SEER2 18, 115V
Albott 12,000 BTU Mini Split Air Conditioner and Heater SEER2 18, 115V
Amazon.com
6
COSTWAY 12000BTU Mini Split Air Conditioner& Heater
COSTWAY 12000BTU Mini Split Air Conditioner& Heater
Amazon.com
7
Temprium 12000 BTU Mini Split Air Conditioner, 115V 22 SEER2 AC & Heat Pump
Temprium 12000 BTU Mini Split Air Conditioner, 115V 22 SEER2 AC & Heat Pump
Amazon.com
8
Rellytech Mini Split AC/Heating System - 19 SEER2 9000 BTU Mini Split AC Unit Inverter Heating and Cooling, 115v Energy Efficient Ductless Air Conditioner Up to 550sq.ft, 24H Timer, Installation Kit
Rellytech Mini Split AC/Heating System – 19 SEER2 9000 BTU Mini Split AC Unit Inverter Heating and Cooling, 115v Energy Efficient Ductless Air Conditioner Up…
Amazon.com

Top 8 Ductless Mini Splits Reviewed in Detail

Here are the top picks for ductless mini split systems. Each one offers unique features and benefits.

1. Top Pick

Rellytech 11500 BTU Mini Split AC/Heating System 17 SEER2 Ductless Inverter

$359.98 $399.99
in stock
Limited time deal
Amazon.com
  • One Unit, All Seasons — 11500 BTU for 550 Sq.Ft.: This ductless mini split replaces your window AC, space heater, and dehumidifier. It heats reliably down to -4°F with auto-defrost and maintains stable cooling at outdoor temperatures up to 122°F. Cool, Heat, Fan, Dehumidify, Turbo, Sleep, and Eco modes plus a 24H timer deliver customizable comfort for bedrooms, home offices, garages, basements, and living areas up to 550 sq.ft.
  • Ultra-Quiet 29dB — Improved Energy Efficiency: Operating as low as 29 dB for peaceful daily use. The DC inverter mini split ac continuously adjusts power instead of frequent on/off cycling, helping reduce energy consumption compared with standard 14 SEER2 units. Sleep Mode gradually adjusts temperatures overnight, and the dedicated screen-off function disables LED lights. It uses low-GWP R32 refrigerant and is certified ETL & AHRI verified.
  • Reduce Stale Odors — One-Touch Self-Clean: This mini split features a self-cleaning function that helps eliminate stale odors caused by prolonged periods of inactivity. With a single touch, you can activate the coil drying cycle to keep the interior of the unit clean all year round. The filter can be removed without tools and rinsed under water, making regular maintenance easy for your split unit ac and heat.
  • 4D Auto Swing + iFEEL — No Hot or Cold Spots: Unlike most air conditioners with only vertical swing, the mini split comes with 4D louvers move vertically and horizontally. iFEEL technology senses temperature via the remote control at your seating position, instead of only reading from the indoor unit. Enjoy balanced airflow and reduce uncomfortable direct air blasts.
  • 115V Household Hardwired Power — Complete Installation Kit: This mini split ac works on standard 115V household power and requires hardwiring, not plug-and-play. Factory pre-charged R32 refrigerant, paired with a 16.42ft copper line set and full installation kit (power cord not included). While experienced users may complete installation independently, professional licensed HVAC technician installation is strongly recommended for all users. Vacuum-pumping is required before startup. This split unit comes with a 5-year limited warranty and ships in two separate packages.
Updated: September 26, 2026 6:10 pm

The Rellytech 11500 BTU Mini Split AC/Heating System is our top pick for the best ductless mini split. It efficiently cools and heats spaces up to 550 square feet. Its inverter technology operates smoothly and quietly, providing comfort all year. The unit delivers heating down to -4°F, ensuring warmth even in winter. Its 17 SEER2 rating indicates strong energy efficiency, making it ideal for daily use.

When comparing it to other models, the Rellytech offers consistent heating and cooling performance. The YITAHOME 12000 BTU model is great for energy savings, but the Rellytech edges it out with superior temperature control. On the other hand, the Rellytech 18000 BTU unit provides more BTUs, but for smaller areas, the 11500 BTU unit is more efficient.

One limitation of the Rellytech 11500 BTU is its coverage area. It may not be suitable for larger spaces over 550 square feet. However, for small to medium rooms, it performs excellently.

Pros

  • Covers up to 550 square feet
  • Heats efficiently down to -4°F
  • 17 SEER2 rating for energy efficiency
  • Multiple modes for cooling and heating

Cons

  • Limited to 550 square feet coverage
  • Not ideal for larger spaces

Best for: Small to medium rooms needing reliable temperature control. Not ideal for: Large spaces over 550 square feet.

The Rellytech 11500 BTU is an excellent choice for comfort and energy savings.

2. Best for Daily Use

YITAHOME 12000 BTU Mini Split AC/Heating System 115V 20 SEER2

$388.75
in stock
Amazon.com
  • Energy-Efficient Cooling & Heating: Our inverter mini split air conditioner is designed for maximum energy conservation and comfort. Featuring a high-powered compressor and heat pump, it delivers outstanding performance while saving up to 50% on energy costs compared to traditional models. Suitable for cooling and heating spaces up to 750 sq. ft., this unit combines advanced inverter technology with reliable performance to keep your home comfortable year-round.
  • Mobile Intelligent Control: YITAHOME 12000 BTU mini split AC equipped with smart features like remote control, WiFi connectivity, this unit provides seamless control from anywhere. It offers exceptional versatility with 5 operating modes (Auto, Cooling, Drying, Heating, Fan). Automatic defrosting, self-diagnosis/cleaning, iFEEL mode, 24-hour timer, sleep mode, energy-saving mode, “HEALTH” mode (negative ions, electrostatic dust removal, and PM2.5 removal)
  • Quiet & Soothing: The ductless air conditioner operates quietly, creating minimal noise during operation; The remote control allows you to set the temperature between 60℉ and 90℉; With noise levels below 41 decibels, you can enjoy a tranquil and undisturbed environment while benefiting from the efficient cooling and heating capabilities of our system
  • All-Weather Responsiveness: This mini split heating and cooling system is built to handle extreme temperatures, operating reliably from 5°F to 118°F. Its 2-in-1 design combines heating and cooling in one compact unit, eliminating the need for additional equipment. With a powerful airflow reaching up to 50 ft and 4D air circulation, this system ensures even temperature distribution and maximum energy conservation.
  • Installation & Package: Our mini split unit ac and heat unit includes indoor/outdoor units, remote, and installation kit(Excluding shut off valves housing and side protection grille); Removable, washable air filter (clean monthly); Must be installed by licensed HVAC pro; Package Note: This product is in two cartons. Please ensure both cartons are available before beginning assembly; factory-sealed system. Pre-charged, non-user serviceable refrigerant system, This residential ductless split‑type room air‑conditioner contains refrigerant R‑32(GWP=675). It complies with Washington‑State Table‑3 refrigerant requirement for new room‑air‑conditioning equipment (GWP limit <750).
Updated: September 26, 2026 6:10 pm

The YITAHOME 12000 BTU Mini Split AC/Heating System is our best value pick. Its 20 SEER2 rating showcases outstanding energy efficiency. The system provides effective cooling and heating while saving you money on energy bills. It covers up to 600 square feet, making it suitable for most rooms, including living rooms and bedrooms.

Compared to other models, the YITAHOME stands out for its energy savings. While the Rellytech 11500 BTU is slightly less powerful, the additional BTUs from the YITAHOME help it cool or heat larger areas effectively. However, it lacks some advanced features found in higher-priced models.

A notable limitation is that its performance may not match higher-end models in extreme temperatures. If you live in an area with very hot summers or cold winters, consider other options. For general use, it performs well across different seasons.

Pros

  • Covers up to 600 square feet
  • 20 SEER2 rating for energy savings
  • Multiple modes for cooling and heating
  • Good for moderate climates

Cons

  • May struggle in extreme temperatures
  • Fewer advanced features than pricier models

Best for: General use in moderate climates. Not ideal for: Extremes in temperature.

The YITAHOME 12000 BTU offers solid performance and energy savings at a great value.

3. Best Compact

Rellytech Mini Split AC/Heating System, 18000 BTU, 19 SEER2 208-230V

$489.99
in stock
Amazon.com
  • Powerful 18,000 Btu Cooling & Heating: Rellytech mini split heat pump system delivers 18,000 BTU cooling and 18,400 BTU heating, covering up to 1,250 sq. ft. Ideal for whole-home comfort, bedrooms, offices, and garages
  • 4 Modes & Smart Eco Function: Features cooling/heating/fan/dry modes for year-round comfort. The ECO mode optimizes energy use for efficient temperature control without wasting electricity
  • Customizable Airflow & Wide Coverage: Includes 4 fan speeds (high/medium/low/Auto) and a 90° vertical swing. Perfect for maintaining comfort in bedroom, basements, offices, or living rooms with rapid and consistent airflow
  • Energy Efficient & Sustainable Design: With a 19 SEER2 rating and HSPF2 8.5, this pre-charged split-system air conditioner reduces energy costs while maintaining strong performance, offering a long-term cooling and heating solution for your home
Updated: September 26, 2026 6:10 pm

The Rellytech Mini Split AC/Heating System with 18000 BTU is designed for larger spaces. It offers powerful cooling and heating, covering up to 1,250 square feet. Its 19 SEER2 rating indicates good energy efficiency, making it a strong choice for whole-home comfort. The unit features multiple modes for year-round use, including cooling, heating, fan, and dry.

When compared to other picks, the 18000 BTU model stands out for its capacity. It excels in performance for large rooms or homes. The Rellytech 11500 BTU is suitable for smaller spaces, while the 18000 BTU handles larger areas more effectively. However, it comes at a higher energy demand.

One significant limitation is its size. This unit may not fit in smaller homes or apartments. It’s best suited for larger spaces or homes with multiple rooms needing temperature control.

Pros

  • Covers up to 1,250 square feet
  • 19 SEER2 rating for good energy efficiency
  • Four operational modes for flexibility
  • Powerful cooling and heating capabilities

Cons

  • Not suitable for small spaces
  • Higher energy demand compared to smaller units

Best for: Large spaces needing powerful heating and cooling. Not ideal for: Smaller homes or rooms.

The Rellytech 18000 BTU is perfect for those with larger homes needing strong performance.

4. Best for Beginners

Rellytech Mini Split AC/Heating System, 12000 BTU, 19 SEER2 115V/110V

$349.99
in stock
Amazon.com
  • Powerful 12,000 Btu Cooling & Heating: Rellytech mini split AC/heating system delivers 12,000 BTU cooling and 12,500 BTU heating, covering up to 750 sq. ft. With a temperature range from 61℉ to 88℉, it provides rapid and consistent temperature control, making it perfect for bedrooms, living rooms, offices, and garages
  • 4 Modes & Smart Eco Function: Our mini split ductless heat pump features cooling/heating/fan/dry modes for year-round comfort. The ECO mode optimizes energy use for both cooling and heating, ensuring you stay comfortable without wasting energy
  • Customizable Airflow & Wide Coverage: Rellytech AC split unit includes 4 fan speeds (high/medium/low/Auto) and a 90°vertical swing. Whether you’re relaxing in bed or hosting a gathering, you can adjust the fan settings to maintain the perfect comfort level throughout your space
  • Energy Efficient & Sustainable Design: With a 19 SEER2 rating and HSPF2 8.5, this pre-charged split-system air conditioner reduces energy costs while maintaining strong performance, offering a long-term cooling and heating solution for your home
  • Sleep-Friendly & Thoughtful Design: Operating at just 42dB, rellytech split-system air conditioner ensures peaceful nights. Sleep Mode gradually adjusts the temperature for comfort. The 24-hour timer and LED-off function further reduce disturbances. Note: Requires professional HVAC installation
  • Reliable After-Sales & Certified Quality: We offer comprehensive after-sales support and technical guidance, backed by an 8-year warranty and 24-hour customer service to ensure a smooth experience from installation to daily use. Trust in Rellytech quality—this product is ETL and AHRI certified for reliable, proven performance.
Updated: September 26, 2026 6:10 pm

The Rellytech Mini Split AC/Heating System with 12000 BTU offers a balanced option for many buyers. It provides efficient cooling and heating for spaces up to 750 square feet. With a 19 SEER2 rating, this system combines comfort with energy savings. It also features several modes for added convenience in different weather conditions.

Compared to other models, this unit is a solid choice for those needing a little more coverage than smaller options like the 9,000 BTU model. The 12000 BTU version offers flexibility for different room sizes. However, it may not be as energy efficient as models with higher SEER ratings.

A limitation of this option is that it may not be powerful enough for larger rooms. If you need to heat or cool a big space, consider the 18000 BTU model instead. For small to medium spaces, it performs reliably.

Pros

  • Covers up to 750 square feet
  • 19 SEER2 rating for energy efficiency
  • Multiple operational modes
  • Good balance of performance and cost

Cons

  • Less effective in large spaces
  • Not the best energy efficiency compared to higher SEER models

Best for: Small to medium rooms needing temperature control. Not ideal for: Large areas over 750 square feet.

The Rellytech Mini Split 12000 BTU is an excellent choice for versatile home comfort.

5. Best Premium

Albott 12,000 BTU Mini Split Air Conditioner and Heater SEER2 18, 115V

$399.98 $499.99
in stock
Ends in
Amazon.com
  • All-in-One Comfort Control: This mini split AC/heating system provides cooling, heating, dehumidifying, and fan modes with 61°F–90°F settings, plus a 24-hour timer and sleep mode for everyday comfort
  • Energy-Efficient Performance: Featuring an advanced invert heat pump with a SEER2 18 rating, this system delivers strong airflow while cutting energy usage and electricity costs without reducing comfort
  • Stable & Reliable Year-Round Use: This 12,000 BTU ductless mini split AC/heating operates in extreme conditions (5°F to 122°F) and efficiently covers spaces up to 750 sq. ft. for all-season comfort
  • Quiet Operation & Easy Control: This split AC unit runs quietly below 29dB to create a peaceful environment at home or work, with simple, intuitive controls for effortless daily operation
  • Self-Cleaning & Warranty Protection: This Air Conditioner offers self-cleaning function, easily removable filters and air blades for convenient cleaning, plus a 5-year compressor and 7-year parts warranty
Updated: September 26, 2026 6:10 pm

The Happy Tao Albott 12000 BTU Mini Split is designed for all-in-one comfort. It provides cooling, heating, dehumidifying, and fan modes. With a SEER2 rating of 18, it offers good energy efficiency while covering spaces up to 600 square feet. This system is suitable for various rooms, from bedrooms to living areas.

In comparison to other options, the Albott stands out with its multiple modes, providing flexibility for everyday comfort. While many models focus on either heating or cooling, this one does both well. However, it does not have the same high BTU capacity as larger models like the Rellytech 18000 BTU.

One limitation is that it may not handle very large rooms effectively. If you need a system for a larger space, consider the higher BTU options. This unit is well-suited for average-sized rooms.

Pros

  • Covers up to 600 square feet
  • Multiple modes for comfort
  • SEER2 rating of 18 for energy efficiency
  • Good for dehumidifying in humid conditions

Cons

  • May struggle in larger rooms
  • Less powerful than higher BTU models

Best for: Average-sized rooms needing varied comfort. Not ideal for: Larger spaces.

The Happy Tao Albott delivers versatile comfort for everyday use.

6. Best Value

COSTWAY 12000BTU Mini Split Air Conditioner& Heater

$499.99 $559.00
in stock
Limited time deal
Amazon.com
  • [Energy Efficient Cooling & Heating:]Equipped with a high power compressor and 1 ton heat pump, this AHRI Certified pre-charged ac unit allows you to enjoy the convenience of cooling in summer and warming in winter. Besides, with an innovative inverter technology, the air conditioner changes the power supply frequency without frequently turning the compressor on and off, so as to reduce power consumption and prolong the service life of the equipment.
  • [5 Modes for All-Year Comfort:]This 12000 BTU split-system AC unit has 5 working modes for you to choose from: auto, cool, dry, heat and fan mode. In addition, this split air conditioner also comes with 4 available fan speeds (low/medium/high/auto), sleep mode, ECO mode, iFEEL & turbo function to meet various needs.
  • [Easy Control & Quiet Operation:]The handy remote control enables you to control this mini split AC unit from your comfortable bed or sofa conveniently. The smart 0.5-24 hour timer and low-noise operation ensure a peaceful sleep time. What’s more, the display screen on the remote control will be turned off automatically when there is no operation within 10s, which will not disturb your sleep.
  • [Self Cleaning & Auto Defrost:]Designed with a self-cleaning function at high temperature of 134.6℉ and a washable filter, this split air conditioner can automatically clean its interior and keep the air in your home fresh and clean. Moreover, the outdoor unit features an auto-defrost function to avoid damage and improve energy efficiency.
  • COSTWAY’s superior quality and design are backed by an industry-leading manufacturer’s warranty. This warranty covers 5 years of parts replacement and 8 years of compressor coverage, ensuring customers can rely on our products for years to come. In addition to this, the installation of this equipment should be done only by a Licensed HVAC Installer.
Updated: September 26, 2026 6:10 pm

The COSTWAY 12000 BTU Mini Split is designed for both cooling and heating needs. It features a powerful compressor and an inverter heat pump for efficient operation. This unit is suitable for up to 600 square feet, making it ideal for many living spaces. The system offers energy-efficient performance, helping you save on bills.

Compared to other models, the COSTWAY provides a good balance of price and features. While it doesn’t have the higher SEER ratings of some models, it still performs reliably. The units like the YITAHOME and Rellytech models have better energy efficiency ratings.

A limitation of the COSTWAY is its performance in extreme temperatures. While it works well in moderate climates, it may not heat effectively in very cold weather. For average conditions, it is a solid choice.

Pros

  • Covers up to 600 square feet
  • Inverter technology for energy efficiency
  • Good for cooling and heating
  • Easy to install

Cons

  • Not ideal for very cold temperatures
  • Lower energy efficiency than some competitors

Best for: Moderate climates needing efficient heating and cooling. Not ideal for: Extreme temperature areas.

The COSTWAY 12000 BTU offers reliable performance at an affordable price.

7. Best Design

Temprium 12000 BTU Mini Split Air Conditioner, 115V 22 SEER2 AC & Heat Pump

$549.99
in stock
Amazon.com
  • 【Unmatched Energy Efficiency with 22 SE2ER2】 Slash your utility bills with our advanced Inverter technology and industry-leading 22 SEER2 rating. Unlike standard units that constantly stop and start, our DC Inverter compressor adapts its speed to maintain the perfect temperature with minimal energy consumption. Paired with eco-friendly R32 refrigerant (GWP 675), this 115V mini split system delivers powerful 12,000 BTU cooling and 12,300 BTU heating while being kind to the environment. It’s the smart, green choice for your home.
  • 【Powerful & Fast Year-Round Comfort】 Designed for spaces up to 750 sq. ft., this ductless heat pump system keeps you comfortable no matter the weather. Whether it’s a scorching summer day in your living room or a chilly night in the bedroom, enjoy rapid cooling even at 122°F and reliable heating down to 5°F. Perfect for home offices, sunrooms, garages, or additions where extending central HVAC is not an option.
  • 【Library-Quiet Operation for Undisturbed Sleep】 Experience peace and quiet like never before. With noise levels as low as 23 dB (quieter than a whisper!), this mini split AC ensures your bedroom, nursery, or home library remains a tranquil sanctuary. Activate Sleep Mode, and the unit will automatically adjust temperatures and dim the display, creating the ideal environment for a deep, restful sleep without any distracting humming.
  • 【Total Control at Your Fingertips with WiFi & 7 Modes】 Stay in command from anywhere using the WiFi-enabled app or your voice via Alexa or Google Assistant. Forgot to turn off the AC? Use your phone. Want it cool before you arrive home? Schedule it. Plus, the backlit remote control gives you access to 7 operating modes (Auto/Cool/Heat/Dry/Fan/Sleep/ECO) and 7 fan speeds, along with convenient features like 4D auto swing, Turbo, and Follow-Me (I Feel) function for personalized comfort.
  • 【Easy Maintenance & Reliable After-Sales Support】 The 133°F high-temperature self-cleaning function helps keep the indoor coil clean and dry, reducing manual upkeep. The washable filter effectively captures dust and airborne particles. We provide comprehensive after-sales support and technical guidance to assist you with any questions, ensuring a smooth ownership experience from setup to everyday use. Trust in Temprium quality—this unit is ETL and AHRI certified for reliable performance and safety.
Updated: September 26, 2026 6:10 pm

The Temprium 12000 BTU Mini Split offers advanced energy efficiency with its 22 SEER2 rating. This system uses DC inverter technology, which adjusts its speed for optimal temperature control. It covers spaces up to 600 square feet, providing effective cooling and heating.

In comparison to other products, the Temprium stands out for its energy efficiency. While many units focus on basic operation, this one adapts to your needs, which can greatly reduce energy costs. However, it may not perform as well in extreme cold as models designed for such conditions.

One limitation is that it may take longer to cool or heat larger spaces effectively. If you primarily need a unit for bigger areas, consider higher BTU options. For smaller to medium rooms, it performs very well.

Pros

  • Covers up to 600 square feet
  • 22 SEER2 rating for best energy efficiency
  • DC inverter technology for temperature control
  • Multiple modes for various climates

Cons

  • Not suitable for larger areas
  • May struggle in extreme temperatures

Best for: Energy-conscious users needing moderate cooling and heating. Not ideal for: Large spaces.

The Temprium 12000 BTU excels in energy savings for everyday use.

8. Runner-Up

Rellytech Mini Split AC/Heating System – 19 SEER2 9000 BTU Mini Split AC Unit Inverter Heating and Cooling, 115v Energy Efficient Ductless Air Conditioner Up…

$309.99
in stock
Amazon.com
  • Powerful 9,000 Btu Cooling & Heating: Rellytech mini split AC/heating system delivers 9,000 BTU cooling and 9,000 BTU heating, covering up to 550 sq. ft. With a temperature range from 61℉ to 88℉, it provides rapid and consistent temperature control, making it perfect for bedrooms, living rooms, offices, and garages
  • 4 Modes & Smart Eco Function: Our mini split ductless heat pump features cooling/heating/fan/dry modes for year-round comfort. The ECO mode optimizes energy use for both cooling and heating, ensuring you stay comfortable without wasting energy
  • Customizable Airflow & Wide Coverage: Rellytech AC split unit includes 4 fan speeds (high/medium/low/Auto) and a 90°vertical swing. Whether you’re relaxing in bed or hosting a gathering, you can adjust the fan settings to maintain the perfect comfort level throughout your space
  • Energy Efficient & Sustainable Design: With a 19 SEER2 rating and HSPF2 8.5, this pre-charged split-system air conditioner reduces energy costs while maintaining strong performance, offering a long-term cooling and heating solution for your home
  • Sleep-Friendly & Thoughtful Design: Operating at just 42dB, rellytech split-system air conditioner ensures peaceful nights. Sleep Mode gradually adjusts the temperature for comfort. The 24-hour timer and LED-off function further reduce disturbances. Note: Requires professional HVAC installation
  • Reliable After-Sales & Certified Quality: We offer comprehensive after-sales support and technical guidance, backed by an 8-year warranty and 24-hour customer service to ensure a smooth experience from installation to daily use. Trust in Rellytech quality—this product is ETL and AHRI certified for reliable, proven performance.
Updated: September 26, 2026 6:10 pm

The Rellytech Mini Split AC/Heating System with 9000 BTU is designed for smaller spaces. It covers up to 550 square feet, making it suitable for bedrooms or small living areas. With a 19 SEER2 rating, it offers decent energy efficiency while maintaining comfort throughout the year.

Compared to other picks, the 9000 BTU model is best for those who only need cooling and heating for smaller areas. Models like the 11500 BTU provide more coverage but at a higher demand. However, this one is an efficient option for compact spaces.

A downside is its limited coverage area. It is not a good fit for larger rooms. If you need a system for bigger spaces, consider a higher BTU model like the 12000 or 18000 BTU units.

Pros

  • Covers up to 550 square feet
  • 19 SEER2 rating for energy efficiency
  • Compact design for easy installation
  • Multiple modes for comfort

Cons

  • Not suitable for larger spaces
  • Lower BTU capacity limits it

Best for: Small rooms needing efficient heating and cooling. Not ideal for: Large homes or offices.

The Rellytech 9000 BTU is a solid choice for compact spaces.

Ductless Mini Splits Compared Side by Side

The table below compares the best ductless mini splits based on their BTU, SEER2 ratings, and coverage area. Look for the column that matches your needs to help make your decision easier.

# Product Best for Brand Price Link
1 Rellytech 11500 BTU Mini Split AC/Heating System 17 SEER2… Top Pick Rellytech $359.98 Check
2 YITAHOME 12000 BTU Mini Split AC/Heating System 115V 20… Best for Daily Use YITAHOME $388.75 Check
3 Rellytech Mini Split AC/Heating System Best Compact Rellytech $489.99 Check
4 Rellytech Mini Split AC/Heating System Best for Beginners Rellytech $349.99 Check
5 Albott 12,000 BTU Mini Split Air Conditioner and Heater… Best Premium Happy Tao $399.98 Check
6 COSTWAY 12000BTU Mini Split Air Conditioner& Heater Best Value COSTWAY $499.99 Check
7 Temprium 12000 BTU Mini Split Air Conditioner Best Design Temprium $549.99 Check
8 Rellytech Mini Split AC/Heating System Runner-Up Rellytech $309.99 Check
9 Senville LETO Mini Split Air Conditioner — Senville $799.99 Check

Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.

How to Choose Ductless Mini Splits

Understanding BTU Ratings

BTU stands for British Thermal Unit. It measures how much cooling or heating a system can provide. For example, a 12,000 BTU unit can cool or heat a space of about 500 to 600 square feet. Choose a model with the right BTU rating for your room size to maximize efficiency.

Importance of SEER Ratings

SEER stands for Seasonal Energy Efficiency Ratio. A higher rating means better energy efficiency. Look for a SEER rating of at least 16 for good performance. For lower energy bills, pick models with a SEER rating of 20 or above.

Heating Performance in Cold Weather

Some mini splits work better in cold weather than others. Check the lowest temperature the unit can heat efficiently. Many models perform well down to 0°F or lower. If you live in a cold area, choose one that can heat reliably in winter.

Modes of Operation

Look for models with multiple modes like cooling, heating, dehumidifying, and fan. This gives you more control over your comfort. Many systems also have Turbo and Eco modes for added efficiency.

Installation Requirements

Ensure you understand the installation needs of each mini split. Some require professional installation, while others can be self-installed. Check if you need additional tools or parts to set it up properly.

How We Reviewed

Where our data comes from

Our data comes from manufacturer specifications, customer reviews, and expert opinions. We analyzed about 40 ductless mini splits to find the best options for this article.

How we built this shortlist

To build our shortlist, we focused on models with high BTU output and energy efficiency. We looked for options that suited various room sizes and included essential features like multiple modes.

What we ruled out and why

We ruled out units with low BTU ratings and poor energy efficiency. Models that received consistent negative reviews for reliability were also excluded.

What we did not do

We did not test these models in person or perform any lab measurements. We relied on available data and customer feedback instead.

How often this page is updated

This page is updated regularly to ensure you have the latest information. We check for new models and adjust our recommendations as needed.

Frequently asked questions

What is the best ductless mini split for winter heating?

The best ductless mini split for winter heating is one that can perform efficiently in cold temperatures. Models like the Rellytech 11500 BTU Mini Split can heat reliably down to -4°F.

How do I choose the right size mini split?

Choosing the right size mini split involves selecting a unit with the appropriate BTU rating for your room size. A 12,000 BTU unit works well for spaces around 500-600 square feet.

What is SEER rating and why is it important?

SEER rating measures energy efficiency. Higher SEER ratings mean lower energy bills. Aim for a model with at least a 16 SEER for good energy efficiency.

Can a mini split cool and heat my home?

Yes, most mini splits can both cool and heat your home. Look for models that provide effective heating during the winter months.

What maintenance is needed for a ductless mini split?

Regular maintenance includes cleaning the filters, checking for leaks, and ensuring the outdoor unit is clear of debris. This keeps the system running efficiently.

What to look for

Cooling and Heating Capacity

Choose a mini split based on its cooling and heating capacity, measured in BTU. A unit with 12,000 BTU is ideal for spaces of 500 to 600 square feet. For larger areas, consider units up to 18,000 BTU or more.

Energy Efficiency Ratio (EER)

EER measures how efficiently a system uses energy. Look for a high EER rating to save on energy costs. Units with an EER of 12 or higher are a good benchmark for efficiency.

Noise Levels

Noise levels are measured in decibels (dB). Most mini splits operate quietly, around 25 to 50 dB. If noise is a concern, choose models that specify low noise levels.

Installation Considerations

Installation can be simple or complex. Some units require professional installation, while others can be set up by homeowners. Check each model’s requirements before purchasing.

Durability and Warranty

Consider the durability of the unit and its warranty. Most mini splits come with a warranty of 5 to 10 years. A solid warranty indicates a reliable product.

About the author

Radhika Gupta

Radhika Gupta 12+ years

Editor, Best Under 2026

Radhika Gupta builds the buying guides on Best Under 2026. Every shortlist starts from the manufacturer specification and the live Amazon listing, then gets cut down by who the product actually suits. Nothing here is hands-on tested, and we do not pretend otherwise — where a guide names a drawback it comes from the spec sheet or from a pattern in buyer reports, not from a lab. Prices are pulled from Amazon and stamped with the date they were checked. If something here is wrong, email hello@bestunder2026.com and it gets fixed.

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