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MRCOOL DIY 5th Gen 3-Zone 42,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with Pre-Charged Line Sets (9K+9K+24K) (DIYM348HP)
Take charge of your home’s comfort with the MRCOOL DIY 5th Gen Multi-Zone Mini Split System — the simplest, most cost-effective way to enjoy powerful, energy-efficient heating and cooling without hiring a professional.
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Comfort for Three Rooms:
Easily heat or cool three separate spaces—350 sq. ft., 350 sq. ft., and 1,000 sq. ft.—each with its own temperature control for perfectly tailored comfort. -
DIY Made Easy:
Skip the expensive installation. No HVAC license, no specialized tools—just basic hand tools and you’re good to go. -
Fast, No-Mess Setup:
Pre-charged Quick-Connect® line sets eliminate refrigerant handling and vacuuming. Just connect the lines and start enjoying your system. -
Year-Round Efficiency:
With up to 21.8 SEER2 cooling and 10 HSPF2-4 heating performance, this system is built to deliver serious energy savings in every season. -
Reliable in Extreme Weather:
Stay warm even when it drops to -13°F. This system’s heating power is designed to perform in harsh winter conditions. -
Worry-Free Warranty:
Includes a 7-year compressor replacement warranty and 5-year parts coverage for added peace of mind.
From blazing summers to frigid winters, the MRCOOL DIY Mini Split keeps your home comfortable—and your energy bills low. Smart. Simple. Affordable.
WHAT YOU GET:
- OUTDOOR UNIT (48K) x 1
MRCOOL DIY® 5th Gen 48,000 BTU 6-Zone Multi-Zone Mini Split Condenser 230V (DIY-MULTI6-48HP230D-O)
- INDOOR UNIT (9K) x 2
MRCOOL DIY® 5th Gen 9,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-09-HP-WMAH-230D25-O)
- INDOOR UNIT (24K) x 1
MRCOOL DIY® 5th Gen 24,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-24-HP-WMAH-230D25-O)
- REMOTE CONTROL x 3
- PRE-CHARGED LINE SETS x 3
NOTE: Need different line set lengths? Click here to add them as add-ons.
SPECIFICATIONS:
| SYSTEM OVERVIEW | |
|---|---|
| System Type | Ductless Mini Split Air Conditioner & Heat Pump |
| Zones | 3 |
| Capacity | Total: 42,000 BTU Zone 1: 9,000 BTU Zone 2: 9,000 BTU Zone 3: 24,000 BTU |
| Coverage Area | Total: 1,700 sq. ft. Zone 1: 350 sq. ft. Zone 2: 350 sq. ft. Zone 3: 1,000 sq. ft |
| Refrigerant | R-454B |
| Line Sets Included | 3 x Pre-Charged Line Sets |
| Warranty | 7 Years Compressor 5 Years Parts |
| OUTDOOR UNIT (48K) x 1 | |
| Model | DIY-MULTI6-48HP230D-O |
| Dimensions | 37.48" W x 16.34" D x 52.48" H |
| Cooling Capacity | 43,000 BTU |
| SEER2 | 21.8 |
| EER2 | 12.0 |
| Heating Capacity | 48,000 BTU |
| HSPF2-4 | 10.0 |
| HSPF2-5 | 7.8 |
| Outdoor Noise Level | 64.0 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 | 40.0A |
| Max Fuse Breaker | 45.0A |
| Weight | 223.77 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 | 151 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 |
| INDOOR UNIT (24K) x 1 | |
| Model | DIY-24-HP-WMAH-230D25-O |
| Dimensions | 42.52" W x 8.9" D x 13.19" H |
| Mounting Type | Wall |
| Cooling Capacity | 24,000 BTU |
| Heating Capacity | 24,000 BTU |
| Coverage Area | 751 to 1,000 sq. ft. |
| Liquid Line Size | 3/8" |
| Suction Line Size | 5/8" |
| 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 | 35.93 lbs |
GUIDE:
Installation Manual
MRCOOL 5th Gen Brochure
Energy Guide
ARHI Certificate
Remote Control Manual
Warranty
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.