Take control of your comfort with the MRCOOL DIY 5th Gen Multi-Zone Mini Split System — the easiest and most affordable way to enjoy powerful, energy-efficient heating and cooling without hiring a pro.
-
Two Rooms, Perfect Comfort: Heat or cool two spaces up to 350 sq. ft. each, with independent temperature control for personalized comfort in every room.
-
Truly DIY-Friendly: Skip the costly installs — no HVAC license or special tools needed. If you can handle basic hand tools, you can handle this.
-
Year-Round Savings: With up to 23.9 SEER2 cooling efficiency and 10 HSPF2-4 heating performance, you’ll enjoy serious energy savings all year long.
-
Built for Every Season: Stay warm even in the coldest months — reliable heating performance down to -13°F ensures comfort no matter the weather.
Strong Warranty Protection: Comes with a 7-Year Compressor Replacement Warranty and 5-Year Parts Coverage for long-lasting peace of mind.
Whether it’s the heat of summer or the chill of winter, the MRCOOL DIY Mini Split keeps your home comfortable while keeping your energy bills low. Smart. Simple. Affordable.
WHAT YOU GET:
MRCOOL DIY® 5th Gen 18,000 BTU 4-Zone Multi-Zone Mini Split Condenser 230V (DIY-MULTI3-18HP230D-O)
MRCOOL DIY® 5th Gen 9,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-09-HP-WMAH-230D25-O)
NOTE: Line sets are not included. Please choose your line set above.
SPECIFICATIONS:
| SYSTEM OVERVIEW |
| System Type |
Ductless Mini Split Air Conditioner & Heat Pump |
| Zones |
2 |
| Capacity |
Total: 18,000 BTU
Zone 1: 9,000 BTU
Zone 2: 9,000 BTU
|
| Coverage Area |
Total: 700 sq. ft.
Zone 1: 350 sq. ft.
Zone 2: 350 sq. ft.
|
| Refrigerant |
R-454B |
| Line Sets Included |
None - Choose Your Line Sets Above! |
| Warranty |
7 Years Compressor
5 Years Parts
|
| OUTDOOR UNIT (18K) x 1 |
| Model |
DIY-MULTI3-18HP230D-O |
| Dimensions |
35.04" W x 13.46" D x 26.50" H |
| Cooling Capacity |
18,000 BTU |
| SEER2 |
23.9 |
| EER2 |
13.0 |
| Heating Capacity |
18,000 BTU |
| HSPF2-4 |
10.0 |
| HSPF2-5 |
7.8 |
| Outdoor Noise Level |
60.0 dB(A) |
| Outdoor Operating Temperature |
Cooling: -13°F – 122°F
Heating: -13°F – 75°F
|
| Voltage |
208–230V |
| Phase |
1 |
| Cycle |
60Hz |
| Min Circuit Ampacity |
16.0A |
| Max Fuse Breaker |
20.0A |
| Weight |
101.63 lbs |
| Certifications |
ENERGY STAR Certified
AHRI Certified
UL Listed
ETL Listed
|
| INDOOR UNIT (9K) x 2 |
| Model |
DIY-09-HP-WMAH-230D25-O |
| Dimensions |
31.57" W x 7.44" D x 11.69" H |
| Mounting Type |
Wall |
| Cooling Capacity |
9,000 BTU |
| Heating Capacity |
9,000 BTU |
| Coverage Area |
351 to 350 sq. ft. |
| Liquid Line Size |
1/4" |
| Suction Line Size |
3/8" |
| Modes |
Auto Mode: Automatically selects heating or cooling based on the room's temperature.
Cool Mode: Lowers the room temperature to your desired setting.
Heat Mode: Raises the room temperature to your desired setting.
Fan-Only Mode: Circulates air without heating or cooling.
Dry Mode (Dehumidification): Reduces humidity levels in the room.
Sleep Mode: Gradually adjusts temperature settings for comfortable sleep and energy savings.
|
| Weight |
24.47 lbs |
GUIDE:
SHIPPING POLICY:
Free Curbside Delivery
MRCOOL orders include free curbside delivery via FedEx Ground, FedEx Freight, or the most trusted carrier available. Please note that delivery is to the curbside only - be sure to arrange for assistance if needed, as the carrier will not bring items inside your home.
Tracking & Delivery Scheduling
In most cases, you will receive tracking details 3-5 business days after you place your order. When the tracking number is sent, please allow 1-2 business days for the tracking number to populate details.
RETURN POLICY:
MRCOOL returns must be requested within 30 days of your delivery date. We are unable to process returns submitted after this period. Products must be unused, uninstalled, and in their original packaging, including the box and pallet, to qualify for a return.
Restocking Fee
Please note, a 35% restocking fee will be applied to all approved returns.
Non-Returnable Items
Accessories including lineguards, wall mounts, linesets, couplers, and similar items are not eligible for return.
