MRCOOL® 48K 6-Zone DIY® Multi-Zone System w/ 12K + 24K Air Handlers & Two 16ft Pre-Charged Line Sets - R-454B — DIYM248HPW03D00

Product Description 

Model: DIYM248HPW03D00    

The MRCOOL DIYM248HPW03D00 bundle delivers the ideal balance for homeowners needing one medium-size zone and one larger, high-demand zone—powered by MRCOOL’s strongest residential multi-zone unit: the 48K double-stack condenser.

 

This configuration pairs:

• 12,000 BTU indoor unit — the perfect size for bedrooms, offices, bonus rooms, or smaller living spaces
• 24,000 BTU indoor unit — engineered for larger rooms, garages, open living areas, and high-load spaces

Together, they create a true dual-zone comfort solution that heats and cools up to 2,000 sq ft, all without hiring an HVAC contractor.

With MRCOOL Quick-Connect® technology, this system arrives pre-charged with R-454B, fully sealed, and ready to install using only basic tools.

 

48K DIY Double-Stack Condenser — Maximum Power, Zero HVAC Tools Needed

The DIY-MULTI6-48HP230D-O is MRCOOL’s most capable DIY condenser:

• 21.8 SEER2 high performance
• Supports up to 6 indoor units
• SmartHVAC WiFi control (iOS, Android, Alexa, Google Home)
• R-454B refrigerant for higher efficiency & lower environmental impact
• Gold Fin® corrosion coating for harsh climates
• Whisper-quiet inverter compressor

Once installed, homeowners enjoy full zoning control, scheduling, energy monitoring, and room-by-room temperature customization.

 

Zone 1 — 12K Indoor Air Handler (Perfect for Medium Rooms)

This 12,000 BTU wall-mount unit is ideal for:

• Bedrooms
• Offices
• Guest rooms
• Small living rooms
• Workshops

It runs quietly, uses very little power, and maintains rock-steady temperatures.

 

Zone 2 — 24K Indoor Air Handler (For Bigger Spaces & High Heat Loads)

The 24K air handler is the workhorse of this bundle, built for:

• Large living rooms
• Oversized master suites
• Shop areas
• Enclosed garages
• Big bonus rooms

With powerful airflow and efficient R-454B cooling, it handles heat load spikes with ease.

 

Includes Two 16ft Pre-Charged R-454B Line Sets

Your bundle includes:

✔ DIY16-1438-O — 16ft 1/4 × 3/8 line set

For the 12K indoor unit.

✔ DIY16-3858-O — 16ft 3/8 × 5/8 line set

For the 24K indoor unit.

 

All line sets include:

• Pre-charged R-454B refrigerant
• Leak-proof Quick-Connect fittings
• Heavy-duty insulation
• UV-resistant weather protection

They require no vacuum pump, manifold gauges, or EPA certification.

 

Correct Breaker Sizing (48K Condenser)

• Maximum Breaker: 45A
• Minimum Ampacity: 40A

WHAT’S INCLUDED IN THE DIYM248HPW03D00 BUNDLE

Outdoor Unit

• 1 × MRCOOL DIY-MULTI6-48HP230D-O (48K double-stack, six-zone) 

Indoor Units

• 1 × 12K DIY Wall-Mount Air Handler
• 1 × 24K DIY Wall-Mount Air Handler 

Line Sets

• 1 × DIY16-1438-O — 16ft 1/4 × 3/8
• 1 × DIY16-3858-O — 16ft 3/8 × 5/8 

Accessories

• DIYPro® communication cables
• Remotes
• Mounting hardware
• WiFi SmartHVAC control
• Owner manuals

 

FREQUENTLY ASKED QUESTIONS

Does this bundle require a professional installer?

No — all components are DIY-ready with Quick-Connect fittings.

How many zones does the condenser support?

Up to six total indoor units.

Does the system work in cold climates?

Yes — excellent heating performance even in winter conditions thanks to advanced R-454B refrigerant.

 

Can I upgrade line sets later?

Yes — MRCOOL extension kits and longer line sets are fully compatible.

  

Why Buy From MRCOOL DIRECT?

When you order from MRCOOL Direct, you get:

• ✅ Authorized MRCOOL dealer – Your warranty is protected
• ✅ Factory-fresh units – No refurbished or mystery sources
• ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
• ✅ Financing options – Make high-efficiency comfort more affordable
• ✅ Real product support – Help with sizing, line set selection, and DIY questions
• ✅ No third-party marketplace middlemen – Just genuine MRCOOL systems from a trusted dealer

BUY DIRECT!

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615-553-8118

Family owned & USAs #1 MRCOOL Authentication Dealer.