A Fresh Perspective｜MRCOOL® 48K 5th Gen 6-Zone DIY® Multi-Zone System with (12K + 24K) Air Handlers & (16ft + 16ft) Pre-Charged R-454B Line Sets, (230V)- 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!
Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC615-553-8118
Family owned & USAs #1 MRCOOL Authentication Dealer.
 
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