In the Spotlight｜MRCOOL® 48K 5th Gen 6-Zone DIY® Multi-Zone System with (12K + 36K) Air Handlers & (16ft + 16ft) Pre-Charged R-454B Line Sets, (230V)-DIYM248HPW04D00

Product Description 
Model: DIYM248HPW04D00    
A High-Capacity DIY System Designed for Big Projects With Mixed-Size Rooms
The MRCOOL DIYM248HPW04D00 bundle is engineered for homeowners who want big-system performance without paying for professional installation. Powered by the ultra-capable 48,000 BTU double-stack condenser, this configuration supports up to six zones and easily conditions up to 2,000 sq. ft. with a mix of both small and large areas.
This bundle includes:

A 12,000 BTU indoor unit for bedrooms, offices, and smaller rooms
A 36,000 BTU indoor unit for open living rooms, garages, workshops, and high-demand spaces
Two factory-charged 16ft Quick-Connect line sets
Full SmartHVAC app integration
Zero need for vacuum pumps, gauges, or refrigerant handling

For homeowners who want pure, efficient, high-output comfort, this system delivers unmatched capability with true DIY simplicity.
48K Double-Stack Condenser — The Most Powerful DIY Condenser Available
The included DIY-MULTI6-48HP230D-O is the top of the DIY lineup. It’s built for large spaces and long-term efficiency.
Core Performance Highlights

21.8 SEER2 high-efficiency cooling
R-454B eco-friendly next-generation refrigerant
Up to six total zones supported
High-performance DC inverter for quiet, smooth output
Gold-Fin corrosion protection for coastal or humid regions
Seamless SmartHVAC™ WiFi control
Compatible with Alexa & Google Assistant

This condenser gives you capacity headroom to expand your home’s HVAC system at any time without upgrading to a different outdoor unit.
 
12K Indoor Unit — Perfect for Smaller Rooms
The DIY-12-HP-WMAH-230D25-O is ideal for:

Offices
Bedrooms
Kids’ rooms
Small living areas
Bonus rooms

Its near-silent operation, responsive inverter technology, and Follow-Me® temperature sensing deliver smooth, stable comfort in smaller spaces.
 
36K Indoor Unit — Built for High-Demand, Large Spaces
The DIY-36-HP-WMAH-230D25-O brings serious output and is designed for:

Large living rooms
Workshops
Add-on apartments
Basements
Oversized master suites
Garages / home gyms

It moves a high volume of air while maintaining efficient heating and cooling, even during extreme conditions.
 
Includes Two 16ft Pre-Charged Line Sets (Quick-Connect R-454B)
This bundle includes the exact line sizes required for proper airflow and refrigerant handling:
✔ DIY16-1438-O (16ft 1/4 × 3/8)
Configured for the 12K unit.
✔ DIY16-3858-O (16ft 3/8 × 5/8)
Sized for the 36K high-load unit.
Every line set arrives:

Pre-charged
Vacuum-sealed
Ready to connect
Leak tested
Protected with heavy insulation and UV barrier

This is the technology that makes true DIY installation possible.
 
CORRECT BREAKER SIZING (48K Condenser)

Max Breaker: 45A
Minimum Circuit Ampacity: 40A

You MUST use the correct breaker for safety and warranty protection.
 
 WHAT’S INCLUDED — DIYM248HPW04D00 BUNDLE
✔ Outdoor Condenser

DIY-MULTI6-48HP230D-O (48K double-stack)

✔ Indoor Units

12K wall-mounted air handler

36K wall-mounted air handler 

✔ Line Sets

16ft 1/4 × 3/8 (DIY16-1438-O)
16ft 3/8 × 5/8 (DIY16-3858-O)

✔ Accessories

Remotes
DIYPro® communication cables
SmartHVAC WiFi controller
Wall sleeves & mounting plates
Install hardware
User and install manuals

 
FAQ —Frequently Asked Questions 
Is the installation truly DIY?
Yes. MRCOOL Quick-Connect technology eliminates vacuum pumps and gauges.

Can each room run independently?
Yes — temperature, fan speed, mode, and schedule are set per room.

How big of a space does the 36K unit cover?
Up to 1,500 sq. ft. depending on layout, insulation, and ceiling height.
 
Can this condenser support more units later?
Yes — up to six total zones.

Does it heat well in winter?
Yes — the inverter system provides strong cold-climate heating.
 
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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