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MRCOOL DIY 5th Gen 3-Zone 54,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (18+18+18) (DIY3-B-48HP)

MRCOOL DIY 5th Gen 3-Zone 54,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (18+18+18) (DIY3-B-48HP)

by MRCOOL
SKU DIY3-B-48HP181818
Save $903.15 Save $903.15
$6,924.15
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$6,021.00
$6,021.00 - $6,021.00
$6,021.00
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MRCOOL DIY 5th Gen 3-Zone 54,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (18+18+18) (DIY3-B-48HP)

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 professional.

  • Perfect Comfort for Three Rooms: Independently heat or cool three 750 sq. ft. spaces for personalized comfort in every room.
  • Truly DIY-Friendly: No expensive installation, HVAC license, or special tools required. If you can handle basic hand tools, you can install it yourself.
  • Hassle-Free Setup: Pre-charged Quick-Connect® line sets eliminate refrigerant handling and vacuuming—just connect and start enjoying comfort immediately.
  • Year-Round Energy Savings: With up to 21.8 SEER2 cooling efficiency and 10.0 HSPF2-4 heating performance, reduce energy costs while staying comfortable.
  • Built for Every Season: Reliable heating works even in freezing temperatures down to -13°F.
  • Strong Warranty Protection: Includes 7-Year Compressor Replacement and 5-Year Parts Coverage for peace of mind.

Whether it’s hot summer days or freezing winter nights, the MRCOOL DIY Mini Split keeps your home comfortable and your energy bills low. Smart. Simple. Affordable.

Note: When using multiple air handlers simultaneously, total output is limited by the condenser’s capacity (up to 48,000 BTU).

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 (18K) x 3

MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-18-HP-WMAH-230D25-O)

          • REMOTE CONTROL x 3

          NOTE: Line sets are not included. Please choose your line set above.

           If all air handlers are run simultaneously, their combined BTU output will not exceed the BTU rating of the condenser.

          SPECIFICATIONS:

          SYSTEM OVERVIEW
          System Type Ductless Mini Split Air Conditioner & Heat Pump
          Zones 3
          Capacity Total: 54,000 BTU
          Zone 1: 18,000 BTU
          Zone 2: 18,000 BTU
          Zone 3: 18,000 BTU
          Coverage Area Total: 2,250 sq. ft.
          Zone 1: 750 sq. ft.
          Zone 2: 750 sq. ft.
          Zone 3: 750 sq. ft.
          Refrigerant R-454B
          Line Sets Included None - Choose Your Line Sets Above!
          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 (18K) x 3
          Model DIY-18-HP-WMAH-230D25-O
          Dimensions 42.52" W x 8.9" D x 13.19" H
          Mounting Type Wall
          Cooling Capacity 18,000 BTU
          Heating Capacity 18,000 BTU
          Coverage Area 501 to 750 sq. ft.
          Liquid Line Size 1/4"
          Suction Line Size 1/2"
          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 35.49 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.