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 HVAC
615-553-8118

Family owned & USAs #1 MRCOOL Authentication Dealer.