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Use a suitable pad, wall bracket, or other approved support for the equipment and site.
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MRCOOL DIY® Select 9,000 BTU Single Zone Mini Split Heat Pump 115V with 11.5 ft Quick Connect Line Set
MRCOOL DIY® Select 9,000 BTU Single Zone Mini Split Heat Pump 115V with 11.5 ft Quick Connect Line Set
Regular price
$1,249.00 USD
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$1,249.00 USD
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Affordable DIY Comfort Without the Installation Cost
The MRCOOL DIY® Select 9,000 BTU Single Zone Mini Split Heat Pump delivers reliable heating and cooling for spaces up to 400 square feet without the high cost of professional installation. Designed for true DIY installation, this 115V ductless mini split system includes an 11.5 ft pre-charged DIY Quick Connect® line set, helping homeowners install dependable comfort without vacuum pumps, gauges, brazing, or refrigerant handling.
Built on proven MRCOOL® technology, the DIY Select series is designed as a budget-friendly mini split option that still delivers the features homeowners actually care about: inverter-driven performance, quiet operation, smart control, R-454B refrigerant, and simplified installation. It is ideal for bedrooms, offices, garages, workshops, small living areas, additions, rental spaces, and other single-zone comfort applications.
What Makes the MRCOOL DIY Select Different?
The MRCOOL DIY Select system is built for homeowners who want real heating and cooling performance without being forced into a traditional contractor-installed mini split. Many low-cost mini splits still require proper evacuation, refrigerant handling, and professional installation steps. When those steps are skipped, performance and long-term reliability can suffer.
MRCOOL solves that problem with factory pre-charged Quick Connect® fittings. The included line set connects using sealed fittings, eliminating the most complicated part of mini split installation and making true DIY installation possible. According to the MRCOOL DIY Select brochure, the system is designed so homeowners can mount the indoor unit, connect the pre-charged line set, power on the system, and enjoy comfort without complicated setup.
Key Features
- 9,000 BTU single zone heating and cooling for rooms up to 400 square feet
- 115V power for smaller single-zone applications
- Includes 11.5 ft pre-charged DIY Quick Connect® line set
- No vacuum pump, gauges, brazing, or refrigerant handling required
- Up to 17.5 SEER2 cooling efficiency
- Up to 8.8 HSPF2-4 heating efficiency for the 9K model
- Inverter technology helps reduce energy use and maintain steady comfort
- Quiet indoor operation as low as 18 dB(A) in silent mode
- Smart control through the MRCOOL® Comfort App
- Works with Amazon Alexa and Google Assistant
- Charged with R-454B refrigerant
- White indoor air handler standard
- Black indoor air handler option coming soon
Includes a Shorter 11.5 ft Pre-Charged Line Set
One of the biggest improvements with the MRCOOL DIY Select series is the included 11.5 ft pre-charged line set. Many DIY mini split systems include longer 16 ft or 25 ft line sets, which can leave extra tubing coiled behind the condenser or along the wall.
The shorter included line set helps create a cleaner, more professional-looking installation with less excess line set to manage. For installations that need additional length, optional pre-charged line sets are available separately in 16 ft, 25 ft, 35 ft, and 50 ft lengths.
Designed for True DIY Installation
The MRCOOL DIY Select 9K system is designed to simplify the install process. Instead of requiring a traditional line set evacuation, vacuum pump, gauges, or refrigerant handling, the pre-charged Quick Connect® line set connects directly to the system using sealed fittings.
That matters because many budget mini splits are only inexpensive up front. If they are installed incorrectly, especially without properly evacuating the refrigerant lines and air handler, the result can be reduced performance, contamination, and shorter system life. The DIY Select helps avoid that common problem by making the critical refrigerant connection step much easier and more reliable.
White Standard Air Handler, Black Option Coming Soon
The standard indoor air handler for this system is white, giving it a clean look for most homes, bedrooms, offices, and living spaces. MRCOOL has also announced a black indoor air handler option for the DIY Select series, which is expected to be a strong fit for modern interiors, garages, workshops, offices, media rooms, and design-focused spaces.
The black indoor unit SKU has not been released yet, so this product currently uses the standard white air handler. Once the black option becomes available, it can be added as a selectable air handler color option.
Smart Comfort from Anywhere
Use the MRCOOL® Comfort App to adjust temperature, change modes, create schedules, and monitor performance from your phone. The system also supports voice control through Amazon Alexa and Google Assistant, making it easier to manage comfort from anywhere in the home.
9,000 BTU DIY Select Specifications
| System Type | Single Zone Mini Split Heat Pump |
|---|---|
| Cooling Capacity | 9,000 BTU |
| Heating Capacity | 9,000 BTU |
| Voltage | 115V |
| Coverage Area | Up to 400 sq. ft. |
| SEER2 | 17.5 |
| HSPF2-4 | 8.8 |
| Refrigerant | R-454B |
| Included Line Set | 11.5 ft pre-charged DIY Quick Connect® line set |
| Optional Line Set Lengths | 16 ft, 25 ft, 35 ft, and 50 ft |
| Indoor Noise Level | As low as 18 dB(A) |
| Outdoor Unit SKU | DIYS-09-HP-C-115A11-O |
| White Indoor Unit SKU | DIYS-09-HP-WMAH-115A13-O |
| System SKU | DIYS-09-HP-115A11-O |
Best Uses for the 9K DIY Select
- Bedrooms
- Home offices
- Small garages
- Workshops
- Rental units
- Small additions
- Sunrooms and enclosed spaces
Why Buy from MRCOOL DIY Direct?
MRCOOL DIY Direct specializes in MRCOOL DIY mini split systems, pre-charged line sets, installation accessories, and replacement parts. We help homeowners across the United States choose the right system for their space, installation layout, and budget.
If you want a budget-friendly mini split system that still gives you true DIY installation, reliable MRCOOL performance, smart control, and a cleaner install with the shorter included line set, the MRCOOL DIY Select 9,000 BTU Mini Split Heat Pump is built for exactly that.
Five checks before you buy
Will this work for you?
You do not need every answer memorized. You do need these five parts of the plan to agree.
-
1. The size
A heating and cooling load calculation should show that the space needs about BTU. Square footage alone cannot make that call.
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2. The circuit
This is a V system. Have the circuit checked for this system.
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3. The route
The selected option covers ft. Measure the real path, including bends and service room.
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4. The power source
Grid, battery, solar, and generator plans all need to support this model plus the other loads running at the same time.
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5. The locations
Make room for airflow, drainage, weather protection, service access, and a safe outdoor-unit support.
Your selected packageWhat will you receive?
Start with the three parts that make this a complete single-zone system. Open each item to see which parts come with the option you selected.
01Indoor air handlerOne indoor unit
This is the part that mounts inside the space and delivers the conditioned air.
02Outdoor condenserOne outdoor unit
This is the outdoor half of the matched heat-pump system.
03Pre-charged connection set ft in the selected option
The selected package provides the documented total route length shown above. Measure the actual path before ordering.
What you may still need: outdoor support, line covers, electrical parts, drains, fasteners, and weatherproofing depend on your site and installation.
Installation readinessCan you install it yourself?
What “DIY-oriented” really means
The connection method may reduce some refrigerant work, but the full job still includes mounting, drainage, electrical work, line routing, weatherproofing, and startup.
A DIY connection does not make every site or every step suitable for a first-time installer.
You should be comfortable with:
- Locating and mounting both units safely
- Planning condensate drainage
- Protecting the line-set route
- Following the manual for your system
- Having an electrician handle the parts that require one
Plan the workWhat does installation look like?
- 1Check everything before you start
Make sure the size, circuit, unit locations, line route, drainage, and local requirements all work together.
- 2Check the delivery
Match the indoor unit, outdoor unit, selected line-set option, and documented package contents.
- 3Mount and route
Secure both units, create the wall path, protect the lines, and give condensate a reliable way out.
- 4Complete the electrical work
Follow the manual for your system and local electrical requirements.
- 5Start up and check
Use the manual’s startup steps, look for drainage or connection problems, and keep the service path clear.
Can this be a weekend project? Sometimes—but the honest answer depends on the building, access, electrical work, weather, tools, and your experience. Work through these details before you schedule the job.
Power requirementsWill your battery, generator, or solar setup work?
Energy sourceGrid, solar, or generator
Storage and conversionBattery and inverter when used
This mini splitPlus every other load
Voltage is only the starting point. Make sure the inverter, batteries, charging, generator, weather, other loads, and extra power kept available can all support the system over time.
Estimate power needsFinish the installationWhich accessories do you actually need?
Line protection
Protect exposed refrigerant lines, control wire, and drain where the installation calls for it.
See line-set coversA compatible line-set extension
Measure first. Longer is not automatically better, and maximum length still applies.
See compatible extensionsElectrical protection and disconnect
Use the installation manual for this system and the electrical requirements for your location.
Review installation accessoriesThe full buying guideWhy might you choose—or skip—this system?
Affordable DIY Comfort Without the Installation Cost
The MRCOOL DIY® Select 9,000 BTU Single Zone Mini Split Heat Pump delivers reliable heating and cooling for spaces up to 400 square feet without the high cost of professional installation. Designed for true DIY installation, this 115V ductless mini split system includes an 11.5 ft pre-charged DIY Quick Connect® line set, helping homeowners install dependable comfort without vacuum pumps, gauges, brazing, or refrigerant handling.
Built on proven MRCOOL® technology, the DIY Select series is designed as a budget-friendly mini split option that still delivers the features homeowners actually care about: inverter-driven performance, quiet operation, smart control, R-454B refrigerant, and simplified installation. It is ideal for bedrooms, offices, garages, workshops, small living areas, additions, rental spaces, and other single-zone comfort applications.
What Makes the MRCOOL DIY Select Different?
The MRCOOL DIY Select system is built for homeowners who want real heating and cooling performance without being forced into a traditional contractor-installed mini split. Many low-cost mini splits still require proper evacuation, refrigerant handling, and professional installation steps. When those steps are skipped, performance and long-term reliability can suffer.
MRCOOL solves that problem with factory pre-charged Quick Connect® fittings. The included line set connects using sealed fittings, eliminating the most complicated part of mini split installation and making true DIY installation possible. According to the MRCOOL DIY Select brochure, the system is designed so homeowners can mount the indoor unit, connect the pre-charged line set, power on the system, and enjoy comfort without complicated setup.
Key Features
- 9,000 BTU single zone heating and cooling for rooms up to 400 square feet
- 115V power for smaller single-zone applications
- Includes 11.5 ft pre-charged DIY Quick Connect® line set
- No vacuum pump, gauges, brazing, or refrigerant handling required
- Up to 17.5 SEER2 cooling efficiency
- Up to 8.8 HSPF2-4 heating efficiency for the 9K model
- Inverter technology helps reduce energy use and maintain steady comfort
- Quiet indoor operation as low as 18 dB(A) in silent mode
- Smart control through the MRCOOL® Comfort App
- Works with Amazon Alexa and Google Assistant
- Charged with R-454B refrigerant
- White indoor air handler standard
- Black indoor air handler option coming soon
Includes a Shorter 11.5 ft Pre-Charged Line Set
One of the biggest improvements with the MRCOOL DIY Select series is the included 11.5 ft pre-charged line set. Many DIY mini split systems include longer 16 ft or 25 ft line sets, which can leave extra tubing coiled behind the condenser or along the wall.
The shorter included line set helps create a cleaner, more professional-looking installation with less excess line set to manage. For installations that need additional length, optional pre-charged line sets are available separately in 16 ft, 25 ft, 35 ft, and 50 ft lengths.
Designed for True DIY Installation
The MRCOOL DIY Select 9K system is designed to simplify the install process. Instead of requiring a traditional line set evacuation, vacuum pump, gauges, or refrigerant handling, the pre-charged Quick Connect® line set connects directly to the system using sealed fittings.
That matters because many budget mini splits are only inexpensive up front. If they are installed incorrectly, especially without properly evacuating the refrigerant lines and air handler, the result can be reduced performance, contamination, and shorter system life. The DIY Select helps avoid that common problem by making the critical refrigerant connection step much easier and more reliable.
White Standard Air Handler, Black Option Coming Soon
The standard indoor air handler for this system is white, giving it a clean look for most homes, bedrooms, offices, and living spaces. MRCOOL has also announced a black indoor air handler option for the DIY Select series, which is expected to be a strong fit for modern interiors, garages, workshops, offices, media rooms, and design-focused spaces.
The black indoor unit SKU has not been released yet, so this product currently uses the standard white air handler. Once the black option becomes available, it can be added as a selectable air handler color option.
Smart Comfort from Anywhere
Use the MRCOOL® Comfort App to adjust temperature, change modes, create schedules, and monitor performance from your phone. The system also supports voice control through Amazon Alexa and Google Assistant, making it easier to manage comfort from anywhere in the home.
9,000 BTU DIY Select Specifications
| System Type | Single Zone Mini Split Heat Pump |
|---|---|
| Cooling Capacity | 9,000 BTU |
| Heating Capacity | 9,000 BTU |
| Voltage | 115V |
| Coverage Area | Up to 400 sq. ft. |
| SEER2 | 17.5 |
| HSPF2-4 | 8.8 |
| Refrigerant | R-454B |
| Included Line Set | 11.5 ft pre-charged DIY Quick Connect® line set |
| Optional Line Set Lengths | 16 ft, 25 ft, 35 ft, and 50 ft |
| Indoor Noise Level | As low as 18 dB(A) |
| Outdoor Unit SKU | DIYS-09-HP-C-115A11-O |
| White Indoor Unit SKU | DIYS-09-HP-WMAH-115A13-O |
| System SKU | DIYS-09-HP-115A11-O |
Best Uses for the 9K DIY Select
- Bedrooms
- Home offices
- Small garages
- Workshops
- Rental units
- Small additions
- Sunrooms and enclosed spaces
Why Buy from MRCOOL DIY Direct?
MRCOOL DIY Direct specializes in MRCOOL DIY mini split systems, pre-charged line sets, installation accessories, and replacement parts. We help homeowners across the United States choose the right system for their space, installation layout, and budget.
If you want a budget-friendly mini split system that still gives you true DIY installation, reliable MRCOOL performance, smart control, and a cleaner install with the shorter included line set, the MRCOOL DIY Select 9,000 BTU Mini Split Heat Pump is built for exactly that.
