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NEW R-454B Refrigerant

MRCOOL DIY® 5th Gen 48,000 BTU Multi-Zone Mini Split Condenser 230V, DIY-MULTI6-48HP230D-O

MRCOOL DIY® 5th Gen 48,000 BTU Multi-Zone Mini Split Condenser 230V, DIY-MULTI6-48HP230D-O

Regular price $3,228.00 USD
Regular price $3,969.99 USD Sale price $3,228.00 USD
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🔀 Up to 6 Zones
🛠️ DIY Install Ready
🏠 Whole-Home Zoning

SKUDIY-MULTI6-48HP230D-O

TypeMulti-Zone Condenser

Refrigerant Type: R-454B

✅ This item is in stock!

More than 30 available

Estimated Delivery: November 25 – November 27

Based on order date & typical delivery times.
• Orders Typically ship within 2 business days

Don't forget your pre-charged line sets.
Each zone/air handler will need its own length — click here to select.
16'25'35'41'50'60'66'75'
MRCOOL Pre-Charged Line Set
View full details

Have questions or need help selecting the perfect Mini Split system?

Talk with our expert HVAC team members now for assistance!!

PRODUCT DESCRIPTION

MRCOOL® DIY 5th Gen 48,000 BTU 6-Zone Multi-Zone Mini Split Condenser – 230V

Model: DIY-MULTI6-48HP230D-O

Discover maximum comfort and total zone flexibility with the MRCOOL® DIY 5th Gen 48,000 BTU Multi-Zone Mini Split Condenser. Built for simple, fast DIY installation, this high-capacity 230V system supports up to six independent zones and a total connected capacity of up to 54,000 BTU. Ideal for larger homes, office spaces, or mixed-use buildings. Requires a minimum of 2 connected air handlers and is pre-charged with environmentally responsible R-454B refrigerant.

Key Features

  • DIY-Friendly Installation: Quick Connect® line sets pre-charged with R-454B make installation easy—no vacuum pump needed
  • Smart Controls: Compatible with SmartHVAC App, Amazon Alexa & Google Assistant for wireless comfort management
  • Low-GWP Refrigerant: R-454B helps reduce environmental impact while enhancing system efficiency
  • Gold Fin® Coating: Anti-corrosive treatment resists rust and coastal wear
  • DIYPRO® Cable: Armored communication wire is UV and weather resistant—no conduit required
  • Reliable Warranty: 7-Year compressor, 5-Year parts, and optional Limited Lifetime Replacement with MRCOOL® Care Program

System Specs

  • Cooling Capacity: 48,000 BTU/h
  • Heating Capacity: 50,000 BTU/h
  • SEER2: Up to 21.5 (depends on connected air handlers)
  • HSPF2-4: ~10.3 | HSPF2-5: ~8.2
  • Power Supply: 208–230V, 60Hz, 1 Phase
  • Minimum Circuit Ampacity: 30 A
  • Maximum Fuse: 35 A
  • Refrigerant Type: R-454B (Charge: ~147 oz)
  • Line Set Sizes: 3/8" Liquid x 5/8" Gas
  • Recommended Coverage: 1,800 – 2,400 sq. ft. (based on configuration and zone efficiency)

Compatible Air Handler Combinations (Max 54,000 BTU)

This condenser supports a wide mix of MRCOOL 5th Gen 6K, 9K, 12K, 18K, 24K, and 36K air handlers. Minimum of 2 air handlers must be connected. Total combined capacity must not exceed 54,000 BTU.

Example combinations:

  • 12K + 12K + 12K + 12K + 6K = 54K
  • 18K + 12K + 9K + 9K + 6K = 54K
  • 24K + 18K + 12K = 54K
  • 36K + 12K + 6K = 54K

Recommended Wire Size

  • Recommended: 8 AWG copper wire – supports 30A MCA and 35A max fuse
  • One Size Smaller (10 AWG): May run hot under load and is not code-compliant at this amperage—avoid use
  • One Size Larger (6 AWG): Best for long runs—minimizes voltage drop and increases safety margin

Note: These units are pre-charged with R-454B and are not compatible with earlier R-410A systems. Always confirm your air handler configuration before purchase. Specifications subject to change.

Trust MRCOOL DIY Direct – your nationwide source for genuine MRCOOL® equipment and expert support.

SPECIFICATION & DIMENSIONS

Specification Details
Model Number DIY-MULTI6-48HP230D-O
Cooling Capacity 48,000 BTU/h
Heating Capacity 48,000 BTU/h
Recommended Coverage Area 2,000 – 2,500 sq. ft.
SEER2 (Estimated) 17.5 – 18.5 (depending on configuration)
HSPF2-4 (Estimated) 8.5 – 9.0
HSPF2-5 (Estimated) 6.5 – 7.5
Power Supply 208–230V, 60Hz, 1 Phase
Minimum Circuit Ampacity 44 – 48 A (est.)
Maximum Fuse 50 A (est.)
Refrigerant Type R-454B
Refrigerant Charge ~115 oz (est.)
Line Set Sizes 3/8" Liquid x 5/8" Gas
Net Dimensions (WxDxH) Approx. 42.91" x 19.88" x 37.01"
Net Weight Approx. 175 – 185 lbs
Recommended Wire Size 6 AWG (recommended for 44–48A load)
One Size Smaller (Risk) 8 AWG – May overheat or be out of code on long runs
One Size Larger (Benefit) 4 AWG – Ideal for long-distance runs and reduced voltage drop

Rated 4.7 / 5 Stars
4700+ Verified Reviews

Comfort That Speaks for Itself

See why homeowners and pros alike trust MRCOOL DIY systems to deliver comfort, savings, and easy installation.

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi

Each of our three MRCOOL air handlers runs perfectly quiet, and it’s awesome being able to control them separately. Installation videos made the whole process doable

Cindy M., Texas

I installed my MRCOOL Universal nearly two years ago. It’s been maintenance-free, super efficient, and I love how consistent the airflow is through my existing ducts

Dave K., Georgia

Our double-wide doesn’t have room for a big air handler, so the MRCOOL wall unit was perfect. Easy install, clean look, and it cools like a champ

Amy R., Florida

The quotes for replacing our old packaged unit were crazy. Installed a MRCOOL 18K system instead — now the living room and bedrooms stay cool all summer without breaking the bank.

Dean L., Alabama

You’d never know it’s running — it’s that quiet. The unit heats our entire single-wide better than the old furnace ever did.

Brenda C., Oklahoma

The MRCOOL mini-split doesn’t take up much space, which is perfect for our tight hallway. It cools faster than I expected and doesn’t trip the breaker like our old window unit.

Lori B., Mississippi