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Mini Split for 400 Sq Ft

Shop the perfect mini-split system for a 400 sq ft space, offering efficient heating and cooling to maintain a comfortable environment year-round. Explore energy-saving options with quiet operation, easy installation, and customizable features to suit your needs. 

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The Best Mini Split for 400 Square Feet

Here are some of the best mini splits for 400 square feet on The Trade Table.

GREE Livo Gen4 9K BTU 19.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump

The GREE Livo Gen4 9K BTU 19.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump (model 4LIV09HP230V1AH / 4LIV09HP230V1AO) is part of Gree's 3rd generation of Livo mini-splits, designed to deliver efficient heating and cooling for small rooms. With a capacity of 9,000 BTU and a high SEER2 rating of 19.5, this unit ensures energy-efficient performance while providing comfort through multiple modes, including Heating, Cooling, Auto, Dry, and Fan. Compatible with 230V electrical systems, it offers a versatile and convenient solution for maintaining an optimal indoor environment.

Mini Split for 400 Sq Ft

MrCool DIY Easy Pro® 9k BTU Ductless Mini-Split Heat Pump Complete System

The MRCOOL DIY Easy Pro® 9k BTU Ductless Mini-Split Heat Pump Complete System is designed for easy installation and can efficiently heat or cool a space of up to 350 square feet with its 20 SEER rating. This system comes with a 16-foot pre-charged line set featuring Fast Connection® fittings, making setup straightforward. It offers various features for enhanced comfort, including the Follow Me® function that adjusts the temperature based on your location in the room, and operational modes like Sleep, Auto, and Timer for customized settings. The system is easy to maintain, with washable air filters and units that only need occasional cleaning with a cloth. You can control the system using the included remote, the SmartHVAC app, or via voice commands with Amazon Alexa or Google Assistant. With a 1-year warranty on the compressor and a 2-year warranty on parts, this energy-efficient mini-split system provides reliable, convenient comfort.

What Size Mini Split for 400 Square Feet

What size mini split do you need for 400 square feet?

Size

The size of the mini split is one of the most crucial factors when choosing one for a 400-square-foot space. For an area this size, a unit with around 9,000 to 12,000 BTUs should do the trick for both heating and cooling. Anything less won’t be powerful enough, while anything more will be overkill and reduce energy efficiency.

Efficiency

Speaking of efficiency, for a space this size you’ll want to look for a unit with an Energy Star rating of SEER 15 or higher. The higher the rating, the more energy-efficient the unit is, which will save you money in the long run. Newer inverter technology units are a great option for maximizing efficiency.

Noise level

Another key consideration is the noise level of the outdoor compressor unit. If you have close neighbors, you’ll want to choose a model advertised as “quiet” or with a low decibel rating, preferably under 55 dB. Some mini-splits even have “silent” modes for nighttime. The last thing you want is an obnoxiously loud unit that bothers you or your neighbors.

Heating Capability

Ensure you select a mini-split that has adequate heating power for your climate. If you live in colder areas look for models that can supply heat down to around -5°F. With colder temperature ratings your mini-split will keep pace and heating effectively even when it gets chilly.

Installating a Mini Split in a 400 Sq Ft Space

In terms of energy efficiency and comfort, the right size for a 400-square-foot space mini split is well-fitted. A good starting point would be to look for one with approximately 9,000-12,000 BTUs which is generally adequate for such an area.

Also, try to find out the best place to put the air handler and condenser unit. The air handler must be positioned on an inside wall preferably on top and away from people’s reach. For the condenser, choose a location outside that is within five to ten feet of where the line set will pass through the wall into the air handler. It should also be level ground, enable good airflow, and allow enough drainage for condensation.

Choose a Highly Efficient Model

  • That small volume you have there calls for the use of Energy Star-certified mini splits with SEER ratings of at least 15. At first, this may come off as expensive but in due course it will save you money by lowering your electricity expenses. On top of that most miniature dividing units are equipped with variable speed inverters which are useful in regulating temperature efficiently in four-hundred-square-foot areas like yours.

Consider Installation Costs

  • The total installed cost for a basic 9,000 to 12,000 BTU mini-split system will typically range from $2,500 to $4,500. The unit itself may cost $1,500 to $3,000, with installation adding another $1,000 to $1,500. More complex installations, additional features like wi-fi controls or zoning systems, and higher SEER ratings will increase the total price. Get multiple bids from HVAC contractors to compare.

Think About Zoning Options

  • If your 400 square feet are divided into multiple rooms, consider a multi-zone mini-split system. This allows you to control the temperature in each room or zone separately for customized comfort and potential energy savings. A two-zone system for a space this size may add $500 to $1,000 to the total cost versus a single-zone unit. For some, the added comfort and control is worth the extra investment.

Frequently Asked Questions About Mini Split for 400 Square Feet

Here are some frequently asked questions about mini splits for 400 sq ft.

Is a mini split system efficient for a 400 sq ft area?

Yes, a mini split system is highly efficient for a 400 sq ft area. With a properly sized unit, you can achieve precise temperature control, reduce energy consumption, and minimize utility costs. Mini splits are also designed to operate quietly and offer zoned heating and cooling, which is ideal for smaller spaces.

Can I install a mini split in a 400 sq ft room myself?

Many mini split systems, especially DIY models like the MRCOOL DIY Easy Pro®, are designed for easy installation and can be installed by homeowners without professional help. However, it is important to follow the manufacturer's instructions carefully and ensure all electrical connections and components are properly installed to maintain efficiency and safety.

How much does it cost to install a mini split in a 400 sq ft room?

The cost to install a mini split system in a 400 sq ft room can vary widely depending on the brand, model, and whether you choose a DIY option or hire a professional installer. On average, DIY systems can cost between $500 to $2,000, while professional installation can range from $1,500 to $4,500, including labor and materials.

How often should I maintain a mini split system for a 400 sq ft room?

To ensure optimal performance, a mini split system should be maintained regularly. This includes cleaning or replacing the air filters every 1-3 months, inspecting the outdoor unit for debris, and checking the indoor unit for dust buildup. Additionally, it is advisable to have a professional service the system annually to check refrigerant levels and ensure all components are functioning correctly.

Can a mini split provide both heating and cooling for a 400 sq ft room?

Yes, a mini split system can provide both heating and cooling for a 400 sq ft room. Most mini splits are heat pumps, meaning they can reverse their operation to either cool or heat the space as needed. This makes them a versatile solution for maintaining comfortable temperatures year-round.

Is a mini split system quiet enough for a 400 sq ft bedroom?

Mini split systems are known for their quiet operation, making them an excellent choice for bedrooms and other small spaces. Indoor units typically operate at a noise level of 19-30 decibels, which is quieter than a normal conversation, ensuring a peaceful environment conducive to sleep and relaxation.

  • Original price $1,299.00 - Original price $1,299.00
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    MRCOOL DIY Easy Pro 12k BTU Ductless Mini-Split Heat Pump Complete System

    MRCOOL

    MrCool DIY Easy Pro® 12k BTU Ductless Mini-Split Heat Pump Complete System Skip professional installation with the MrCool® Easy Pro® 12k BTU Ductle...

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    Original price $1,299.00 - Original price $1,299.00
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    Stealth Comfort Pinnacle 12000 BTU 30.5 SEER Single Zone Wall Mount Mini Split System With Max Heat

    Stealth Comfort

    Stealth Comfort Pinnacle 12000 BTU 30.5 SEER Single Zone Wall Mount Mini Split System With Max Heat The Stealth Pinnacle Series Single Zone mini...

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    Original price $1,943.00 - Original price $1,943.00
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    Stealth Comfort Pinnacle 12000 BTU Wall Mount Single Zone Mini Split Air Handler

    Stealth Comfort

    Stealth Comfort Pinnacle 12000 BTU Wall Mount Single Zone Mini Split Air Handler The Stealth Pinnacle Series single zone air handler constantly mon...

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    Original price $599.00 - Original price $599.00
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  • Original price $702.99 - Original price $702.99
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    Gree 12k BTU Ceiling Cassette Indoor Mini-Split Multi-Zone Air Handler

    GREE

    Gree 12k BTU Ceiling Cassette Indoor Mini-Split Multi-Zone Air Handler The Gree Ceiling Cassette is designed for quiet operation and a sleek, uno...

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    Original price $702.99 - Original price $702.99
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  • Original price $574.00 - Original price $574.00
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    MRCOOL E Star DIY 4th Gen 12k BTU Ductless Mini-Split Air Handler

    MRCOOL

    MRCOOL E Star DIY 4th Gen 12k BTU Ductless Mini-Split Air Handler 115V/60Hz The MRCOOL E Star DIY 4th Gen 12k BTU Ductless Mini-Split Air Handler o...

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    Original price $574.00 - Original price $574.00
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    ACiQ 12000 BTU Platinum Multi Zone Air Handler with WiFi

    ACIQ

    ACiQ 12000 BTU Platinum Multi Zone Air Handler with WiFi ACiQ Platinum air handlers are compatible with any ACiQ Multizone condenser or the Platinu...

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    Original price $654.00
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    MRCOOL DIY 4th Generation 35ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor

    MRCOOL

    MRCOOL DIY 4th Generation 35ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor The MRCOOL DIY® Quick Connect® 35 ft. 1/4 x 1/2 Line Set comes fu...

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    Original price $438.00 - Original price $438.00
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  • Original price $792.69 - Original price $792.69
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    Gree High Static 12K BTU Concealed Duct Mini-Split Multi Zone Air Handler

    GREE

    Gree High Static 12K BTU Concealed Duct Mini-Split Multi Zone Air Handler The Gree High Static Slim Duct indoor unit offers flexibility. It is desi...

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    Original price $792.69 - Original price $792.69
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    GREE Sapphire 12K BTU Wall Mount Mini-Split Single Zone Air Handler

    GREE

    GREE Sapphire 12K BTU Wall Mount Mini-Split Single Zone Air Handler The Gree Sapphire is an ultra high-efficiency ductless mini split system from G...

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    Original price $794.78 - Original price $794.78
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  • Original price $2,271.70 - Original price $2,271.70
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    GREE Sapphire 12K BTU 30.5 SEER Wall Mount Mini-Split Single Zone Heat Pump - SAP12HP230V1A

    GREE

    GREE Sapphire 12K BTU 30.5 SEER Wall Mount Mini-Split Single Zone Heat Pump The Gree Sapphire is an ultra high-efficiency ductless mini split syste...

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    Original price $2,271.70 - Original price $2,271.70
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    Stealth Comfort 12,000 BTU Stealth Designer+ Floor/Ceiling Multi Zone Air Handler

    Stealth Comfort

    Stealth Comfort 12,000 BTU Stealth Designer+ Floor/Ceiling Multi Zone Air Handler 12,000 BTU Floor or Ceiling Mount Air Handler Stealth Designer ...

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    GREE Livo SEER2 Gen4 12K BTU Wall Mount Mini-Split Single Zone Air Handler

    GREE

    GREE Livo SEER2 Gen4 12K BTU Wall Mount Mini-Split Single Zone Air Handler The 4LIV12HP230V1AH is a 12,000 BTU variable speed air handler from Gree...

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    Original price $425.55 - Original price $425.55
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    GREE Livo Gen4 12K BTU 17.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump - 4LIV12HP230V1A

    GREE

    GREE Livo Gen4 12K BTU 17.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump The 4LIV12HP230V1AH / 4LIV12HP230V1AO single-zone system is one of Gr...

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    Original price $1,138.98 - Original price $1,138.98
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    GREE Livo Gen4 12K BTU 17.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump

    GREE

    GREE Livo Gen4 12K BTU 17.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump - 4LIV12HP115V1A The Gree Livo Gen4 system provides high efficiency a...

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    Original price $1,176.53 - Original price $1,176.53
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    ACiQ 12000 BTU 20.8 SEER2 Single Zone Wall Mounted Mini Split System With WiFi

    ACIQ

    ACiQ 12000 BTU 20.8 SEER2 Single Zone Wall Mounted Mini Split System With WiFi - 115V ACiQ's mini split systems are designed to give ...

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    Original price $1,229.00 - Original price $1,229.00
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    MRCOOL DIY 4th Gen Multi-Zone 12k BTU Ceiling Cassette with 25ft DIY Pro Cable

    MRCOOL

    MRCOOL DIY 4th Gen Multi-Zone 12k BTU Ceiling Cassette with 25ft DIY Pro Cable With an easy, low profile installation, the MRCOOL® DIY® Series Outt...

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    Original price $1,186.00 - Original price $1,186.00
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  • Original price $995.00 - Original price $995.00
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    ACiQ 24,000 BTU Floor Mounted Mini-Split Air Handler

    ACIQ

    ACiQ 24,000 BTU Floor Mounted Mini-Split Air Handler ACiQ Floor Mounted air handlers are ideal for sun porches and attic rooms where space to mount...

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    Original price $995.00 - Original price $995.00
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  • Original price $850.00 - Original price $850.00
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    ACiQ 18000 BTU Floor Mounted Mini-Split Air Handler

    ACIQ

    ACiQ 18000 BTU Floor Mounted Mini-Split Air Handler ACiQ Floor Mounted air handlers are ideal for sun porches and attic rooms where space to mount ...

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    Original price $850.00 - Original price $850.00
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  • Original price $775.00 - Original price $775.00
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    ACiQ 12000 BTU Floor Mounted Mini-Split Air Handler

    ACIQ

    ACiQ 12000 BTU Floor Mounted Mini-Split Air Handler ACiQ Floor Mounted air handlers are ideal for sun porches and attic rooms where space to mount ...

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    Original price $775.00 - Original price $775.00
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  • Original price $750.00 - Original price $750.00
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    ACiQ 12000 BTU Concealed Duct Mini-Split Air Handler

    ACIQ

    ACiQ 12000 BTU Concealed Duct Mini-Split Air Handler Concealed Duct air handlers give you all the advantages of a multi zone mini split, withou...

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    Original price $750.00 - Original price $750.00
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  • Original price $950.00 - Original price $950.00
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    ACiQ 12000/18000 BTU Slim Ceiling Cassette Mini Split Air Handler

    ACIQ

    ACiQ 12000/18000 BTU Slim Ceiling Cassette Mini Split Air Handler Slim Ceiling Cassettes give you the advantages of a traditional cassette, but...

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    Original price $950.00 - Original price $950.00
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  • Original price $835.00 - Original price $835.00
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    ACiQ 12,000 BTU Ceiling Cassette Mini-Split Air Handler

    ACIQ

    ACiQ 12,000 BTU Ceiling Cassette Mini-Split Air Handler Mini Split systems are great, but what if you don't want the air handler on your wall? ACiQ...

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    Original price $835.00 - Original price $835.00
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    ACiQ 12,000 BTU 21.4 SEER2 Single Zone Wall Mounted Mini Split System w/ WiFi

    ACIQ

    ACiQ 12,000 BTU 21.4 SEER2 Single Zone Wall Mounted Mini Split System w/ WiFi ACiQ’s mini split systems are designed to give you intelligent te...

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    Original price $1,161.00 - Original price $1,161.00
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    ACiQ Platinum 12000 BTU 25 SEER Single Zone Concealed Duct Mini Split System With Extreme Heat

    ACIQ

    ACiQ Platinum 12000 BTU 25 SEER Single Zone Concealed Duct Mini Split System With Extreme Heat The ACiQ Platinum series makes ultra-high efficiency...

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    Original price $2,025.00 - Original price $2,025.00
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Testimonials

Dimplex 50 Inch IgniteXL Linear Electric Fireplace Attached

Exceptional Quality and Service!

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Dimplex 100 Inch IgniteXL Linear Electric Fireplace Attached

Great Customer Service

Fast turn around. Package came with both pulleys for direct replacement of the original molded plastic GIOT pulleys. These pulleys match the Body Solid GS9 upgraded pulleys exactly.

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Dimplex 88 Inch Ignite Bold Built-In Linear Electric Fireplace Attached

Reliable and Durable

We finally had the heater installed yesterday. It’s exactly what we needed!! Thank you so much for all of your help. John really went above and beyond. My greenhouse is now safe and warm again for all my critters!!

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Monessen Exacta 32 Inch Vent Free Circulating Clean Face Firebox Attached

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Two weeks after receiving the AC300 and B300, we had a 7-hour power outage due to a heavy thunderstorms. The Bluetti powered our home fridge, TV, and computer without any issues. We are very thankful to have them.

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Great Value for Money

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Mr Steam MS90E

Impressive Selection

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