MRCOOL® DIY® 5th Gen 48,000 BTU Hybrid Mini Split System (36K Ducted + 12K Wall) – 21.8 SEER2 – Model DIYM48K-HYB-36D-12W

Product Description 

The MRCOOL® DIYM48K-HYB-36D-12W Hybrid Mini Split System is a powerful, high-efficiency heating and cooling solution designed for homeowners who want whole-home comfort, flexible zoning, and professional-grade performance—without paying for professional HVAC installation.

This custom hybrid system pairs the MRCOOL® DIY® 5th Generation 48,000 BTU multi-zone condenser with a 36,000 BTU ducted DIY Hybrid™ air handler and a 12,000 BTU wall-mounted air handler. This configuration allows you to condition large open areas through ductwork while independently controlling a separate room such as a master bedroom, office, bonus room, or addition.

Installation is dramatically simplified using MRCOOL®’s patented DIY® QuickConnect® technology, which eliminates the need for vacuum pumps, refrigerant gauges, or licensed HVAC technicians. All compatible line sets are pre-charged with R-454B refrigerant, a next-generation, low-GWP refrigerant that improves efficiency while reducing environmental impact. The included DIYPRO® cable removes the need for electrical conduit, speeding up installation and improving long-term durability.

With DC inverter technology, Gold Fin® corrosion protection, and full smart home integration, this hybrid system delivers quiet operation, lower energy bills, and dependable year-round comfort.

KEY FEATURES & PERFORMANCE HIGHLIGHTS

• 48,000 BTU total system capacity
• Hybrid ducted + ductless configuration
• (1) 36K DIY Hybrid™ ducted air handler
• (1) 12K wall-mounted air handler
• 21.8 SEER2 high-efficiency rating
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged line-set compatibility
• R-454B eco-friendly refrigerant
• DIYPRO® cable (no conduit required)
• Gold Fin® anti-corrosion coil protection
• Follow Me® temperature sensing
• MRCOOL® Smart HVAC Controller® App
• Amazon Alexa® & Google Home® compatibility
• ENERGY STAR® & AHRI certified

ELECTRICAL REQUIREMENTS

Outdoor Condenser – DIY-MULTI6-48HP230D-O

• Voltage: 208 / 230V
• Phase: Single-Phase
• Frequency: 60 Hz
• Minimum Circuit Ampacity (MCA): 40 Amps
• Maximum Breaker Size: 45 Amps
• Dedicated Circuit Required: Yes

DIMENSIONS & WEIGHT 

Outdoor Condenser

• Width: 37.48 in
• Height: 52.48 in
• Depth: 16.34 in
• Net Weight: ~224 lbs

36K DIY Hybrid™ Ducted Air Handler

• Width: 21.02 in
• Height: 49.02 in
• Depth: 21.02 in
• Net Weight: ~128 lbs

12K Wall-Mounted Air Handler

• Width: 31.57 in
• Height: 11.63 in
• Depth: 7.44 in
• Net Weight: ~24.5 lbs

WHAT’S INCLUDED IN THIS BUNDLE 

•  MRCOOL® DIY® 48,000 BTU Multi-Zone Outdoor Condenser
•  (1) 36,000 BTU DIY Hybrid™ Ducted Air Handler
•  (1) 12,000 BTU Wall-Mounted Indoor Air Handler
•  DIYPRO® communication cable
•  Wireless remote for wall unit
•  Installation manuals & mounting hardware

Line sets and Heat Kits sold separately

Compatible Heat kits

MVPHK05

MVPHK08
MVPHK10
MVPHK15
MVPHK20

WARRANTY COVERAGE

• 5-Year Parts Warranty
• 7-Year Compressor Warranty
• Limited Lifetime Replacement Warranty
  (with MRCOOL® Care Program registration)

FREQUENTLY ASKED QUESTIONS 

Can this system heat and cool multiple areas independently?

Yes. The ducted air handler conditions large areas while the wall unit controls a separate zone independently.

Is professional HVAC installation required?

No. This system is designed for true DIY installation using pre-charged QuickConnect® line sets.

Does it support smart home control?

Yes. Works with the MRCOOL® Smart HVAC App, Alexa®, and Google Home®.

Can I add more zones later?

Yes, as long as total condenser capacity is not exceeded.

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 MRCOOL® 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.