MRCOOL DIY Select 18,000 BTU Ductless Mini Split Heat Pump 230V

Name: MRCOOL DIY Select 18,000 BTU Ductless Mini Split Heat Pump 230V
Brand: MRCOOL
Price: 1690.0 USD
Availability: InStock

SKU: mr18930k | Model: DIYS-18-HP-230A11-O

$1,690.00

Have a question or need a quote? Ask Our Experts

Live Chat | 1 (800) 934-9194 | Email

Manufacturer's Warranty

1-Year Parts Limited Warranty; 2-Year Compressor Limited Warranty

What's In The Box?

MRCOOL DIY Select 18,000 BTU Ductless Mini Split Indoor Air Handler (DIYS-18-HP-WMAH-230A13-O)
MRCOOL DIY Select 18,000 BTU Ductless Mini Split Outdoor Condenser (DIYS-18-HP-C-230A11-O)
13-Foot Communication Cable
11.5-Foot Installation Kit
Remote Control
Drain Hose
Air Filter
Installation Hardware
Owner's Manual, Guides, and Other Documents

Info & Guides

The MRCOOL DIY Select 18,000 BTU AC is a single-zone ductless mini-split heat pump that brings year-round heating and cooling to spaces that lack ductwork. Mounted on the wall with a slim profile, this system fits garages, workshops, home additions, and bedrooms that need independent climate control without a central HVAC connection.

What sets the DIY Select apart is its true do-it-yourself installation. The pre-charged 11.5-foot line set eliminates the need to vacuum refrigerant lines, so you can mount the indoor air handler and outdoor condenser without calling in a licensed technician. If you have been putting off adding climate control to a space because of contractor costs, this system takes that barrier out of the equation.

Key Features and Benefits of the MRCOOL DIY Select 18,000 BTU Ductless Mini Split Heat Pump

Cooling and Heating Output: Provides 17,000 BTU of cooling power and 18,000 BTU of heat for reliable temperature management during summer and winter months, covering rooms up to 800 square feet.
SEER2 Efficiency: A 17.3 SEER2 rating reduces your electricity costs compared to older, lower-efficiency systems over the life of the heat pump.
Inverter Compressor: The variable-speed inverter rotary compressor adjusts output to match your demand, minimizing energy waste and temperature swings.
R-454B Refrigerant: The included 11.5-foot 1/4 x 1/2-inch pre-charged refrigerant line set eliminates the need for vacuum equipment during installation, cutting your setup time.
Low-Temperature Operation: Supports operation in ambient temperatures down to 38 degrees F.
Wi-Fi Control: Connect to your home Wi-Fi network to monitor and adjust your system remotely from your smartphone, wherever you have a signal.
Remote Control: The included handheld remote lets you change modes, set schedules, and adjust temperature from across the room without reaching for your phone.
Certified Performance: ETL listed, UL recognized, AHRI certified, and CSA approved, confirming the system meets North American safety and performance testing standards.

Sizing Your Space for the 18,000 BTU DIY Select

This heat pump covers up to 800 square feet, making it a fit for master bedrooms, large home offices, garage bays, and studio apartments. If your space runs smaller, a lower-capacity model in the DIY Select series may be more efficient to operate. Rooms with high ceilings, poor insulation, or large window areas can reduce effective coverage, so factor those conditions into your sizing decision. You will also need a 208-230V electrical circuit, so confirm your wiring before starting the single-zone installation.

Sylvane's Expert Take

If you're a homeowner looking to add heating and cooling to a room, garage, or workshop without tearing into walls for ductwork, the DIY Select 18,000 BTU is built for exactly that scenario. Unlike professionally installed mini-splits that require a licensed HVAC technician and specialized vacuum equipment, this system lets you handle installation yourself, cutting out the cost of professional labor entirely. Wi-Fi connectivity is where this system pays off day to day, allowing you to adjust temperature, switch between heating and cooling modes, and set schedules from your phone, so you never come home to a freezing garage or an overheated bedroom.

Key Specifications

Energy Efficiency Ratio 2 (EER2)

9.0
Mounting Type

Wall
Number of Speeds

Variable
Seasonal Energy Efficiency Ratio 2 (SEER2)

17.3
Total Cooling Capacity (BTUs)

17000
Total Heating Capacity (BTUs)

18000

General

Certifications

ETL, AHRI, CSA, UL
Color

White
Compressor Type

Inverter Rotary
Heat Mode

Yes
Installation Type

Do-It-Yourself (DIY)
Line Length Option

11.5 ft
Maximum Indoor Noise Level (dB)

46.5
Maximum Operating Temperature - Cooling (degrees F)

122.0
Maximum Operating Temperature - Heating (degrees F)

75.0
Minimum Operating Temperature - Cooling (degrees F)

5
Minimum Operating Temperature - Heating (degrees F)

-13.0
Number of Zones

1
Recommended Coverage Area (sq. ft.)

800
Refrigerant Type

R-454B
Zone Cooling Capacity (BTUs)

17000
Zone Heating Capacity (BTUs)

18000
California Residents

⚠ WARNING: This product can expose you to chemicals including Lead and Lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.